GENERAL KNOWLEDGE OBJECTIVE TYPE (VOLUME 2)

GENERAL KNOWLEDGE OBJECTIVE TYPE 

(VOLUME 2)

Question 1: Load or force that acts along the axis of rotation

A) centrifugal load

B) inertia of loading

C) axial load

D) radial load

Explanation: Axial Load: This type of load acts along the axis of rotation of a component, such as a shaft. It is a force that is directed parallel to the axis, affecting the component in compression or tension. Comparison with Other Options: /a. Centrifugal Load: This load is directed outward from the center of rotation but not along the axis./ b. Inertia of Loading: This term usually relates to the resistance an object has to changes in its state of motion and is not specifically a type of load./ d. Radial Load: This load acts perpendicular to the axis of rotation, directed outward, rather than along it.

Question 2: It should be maintained at 50% - 60% to nourish the composting bacteria.

A) waste

B) temperature

C) moisture

D) moisture content

EXPLANATION: Maintaining moisture content at 50% to 60% is important in composting as it helps to nourish composting bacteria, which are essential for the decomposition process. Appropriate moisture levels ensure that the microorganisms are active and can effectively break down organic matter. Too much moisture can lead to anaerobic conditions, while too little can inhibit microbial activity.

Question 3: According to PAES 151:2010, a mechanical rice transplanter shall have a minimum field efficiency of ___.

A) 60%

B) 70%

C) 80%

D) 90%

SOLUTION: According to PAES 151:2010, a mechanical rice transplanter shall have a minimum field efficiency of c. 80%.

Question 4: A self-propelled machine having a single axle designed to pull and propel trailed agricultural implements and  machinery. 

A) walking type agricultural tractor

B) four-wheel tractor

C) pull-type tractor

D) track-type agricultural tractor

Explanation: A walking type agricultural tractor typically has a single axle and operates on treads or wheels, allowing it to pull and propel various agricultural implements and machinery. It is designed for maneuverability in agricultural settings. Comparison with Other Options: b. Four-wheel tractor: Refers to tractors with four wheels, which often provide more stability and power but does not specifically match the description of having a single axle. c. Pull-type tractor: This term is more general and refers to tractors designed primarily for pulling implements rather than those that also propel themselves. d. Track-type agricultural tractor: This usually refers to tractors that run on tracks rather than wheels, providing different performance characteristics and not necessarily focusing on the self-propelling aspect. Thus, the best answer that aligns with the given description is a. walking type agricultural tractor.

Question 5: Scratching, cutting or abrasing of materials caused by action of soil.

A) soil ripping

B) soil abrasion

C) tillage

D) subsoiling

Explanation: Soil Abrasion: This term specifically describes the process of scratching, cutting, or wearing away materials due to the mechanical action of soil particles moving against surfaces, such as agricultural implements or machinery. Comparison with Other Options: a. Soil Ripping: This refers to a process that involves breaking up compacted soil, typically with a machine designed to penetrate the soil layers. c. Tillage: A broader term that includes any agricultural preparation of soil through various mechanical processes but doesn't specifically focus on abrasion. d. Subsoiling: This is a type of tillage that involves loosening the soil beneath the surface but does not specifically refer to the action of soil causing abrasion. Summary: Therefore, for the given definition, the best answer is b. soil abrasion.

Question 6: Stunner that uses kinetic energy to project bolt into the forehead of the animal to render it unconscious.

A) captive bolt

B) cartridge

C) bolt

D) bullet round

Explanation: Captive Bolt: This device is specifically designed for the humane stunning of livestock. It uses kinetic energy to fire a bolt into the animal's forehead without penetrating the skull, effectively rendering the animal unconscious quickly and painlessly. Comparison with Other Options: b. Cartridge: This generally refers to a complete assembly of ammunition that includes a casing, projectile, and propellant but doesn't specifically relate to the stunning process. c. Bolt: While this is part of the term "captive bolt," it does not adequately describe the mechanism meant for stunning animals. d. Bullet Round: This term typically refers to traditional ammunition used in firearms for shooting, rather than a device designed for humane stunning.

Question 7: The preliminary operation of the machine to make various adjustments prior to the conduct of the test

A) performance test

B) running-in period

C) constant loading

D) continuous running test

Explanation: Running-In Period: This refers to the initial phase in which a machine is operated under specific conditions to allow for adjustments and to establish normal operational parameters. It is crucial for performance testing as it ensures that the machine is functioning correctly before rigorous testing begins. Comparison with Other Options: a. Performance Test: This refers to the assessment of how well a machine operates, but it occurs after the running-in period, not during the preliminary adjustments. c. Constant Loading: This is related to the testing of machines under consistent stress or weight to evaluate performance, not to be confused with the establishment of operational adjustments prior to testing. In summary, the answers are a. captive bolt for the stunner and b. running-in period for the preliminary operation of the machine.

Question 8: YType of mixer that have horizontal feed mixing device. This mixer moves the feed ingredients from one end to the other.

A) ribbon mixer

B) horizontal feed mixer

C) vertical feed mixer

D) paddle type

SOLUTION: Explanation: Horizontal Feed Mixer: This type of mixer is specifically designed to transport and mix feed ingredients horizontally from one end to the other. It often features a horizontal auger or similar mechanism that facilitates the movement and mixing of the feed ingredients in a continuous manner. Comparison with Other Options: a. Ribbon Mixer: While a ribbon mixer also features a horizontal design, it specifically includes a ribbon-like auger that rotates to move materials. Though similar, the broad classification here points to the horizontal feed mixer as the best fit. c. Vertical Feed Mixer: This mixer is oriented vertically and typically mixes feed ingredients in an upward motion rather than horizontally. d. Paddle Type: Paddle mixers utilize paddles to mix the materials but may not necessarily be horizontal and do not define the mixing movement as specified in the question.

Question 9: The sum of the weights of collected decorticated fiber and all losses.

A) extraction efficiency

B) total decorticating input

C) extraction loss

D) effective allowance

Explanation: Extraction Efficiency: This term represents the effective yield from a processing operation, wherein it indicates the sum of the weights of the collected decorticated fiber (the desired product) along with accounting for all losses that occur during the extraction process. It essentially reflects how efficiently the material was processed. Comparison with Other Options: b. Total Decorticating Input: This typically refers to the total amount of raw material input into the decorticating process, not the outcome. c. Extraction Loss: This term refers specifically to the proportion of material that is lost during the extraction process, rather than the sum of collected weights. d. Effective Allowance: This could refer to allowances made in processing for various factors but does not specifically denote the sum of weights. In summary, the answers are b. horizontal feed mixer for the type of mixer and a. extraction efficiency for the sum of weights of collected decorticated fiber and all losses.

Question 10: A mechanical device used for extracting fibers by crushing, beating and scraping actions effected by the rotating cylinder with equally spaced blades and breaker or scraper block.

A) blades

B) decorticating drum cover

C) fiber decorticator

D) breaker block

Explanation: Fiber Decorticator: This is a specific type of machine designed to extract fibers from plant materials. It utilizes a rotating cylinder equipped with blades and breaker or scraper blocks to crush, beat, and scrape the fibrous material, efficiently separating the fibers for further processing. Comparison with Other Options: a. Blades: While blades are a component of the decorticator, they do not describe the entire mechanism or its purpose. b. Decorticating Drum Cover: This would refer to a protective or structural component of the decorticator but does not encompass the entire device aimed at fiber extraction. d. Breaker Block: Similar to blades, this is a part of the decorticator. It plays a role in the fiber extraction process but is not the term that describes the whole device. Summary: Therefore, the correct answer is c. fiber decorticator.

Question 11:The speed of the rotating shafts of the major components of the forage chopper shall be taken using a _______.

A) power meter

B) tachometer

C) noise level meter

D) feed mixer

Explanation: Tachometer: This instrument is specifically designed to measure the rotational speed (RPM) of a shaft or other rotating components. It provides accurate readings of how fast the machine's parts are moving, which is essential for operating and maintaining equipment like forage choppers. Comparison with Other Options: /a. Power meter: This measures electrical power or energy but not rotation speed. /c. Noise level meter: This is used to measure sound levels and not related to rotation speed. /d. Feed mixer: This refers to equipment used in livestock feeding and does not pertain to measuring speeds.

Question 12: Ratio of the number of animals stunned successfully with single application to the total number of animals stunned, expressed in percentage.

A) extraction length

B) caliber

C) insensibility

D) stunning efficacy

Explanation: Stunning Efficacy: This term specifically refers to the effectiveness of the stunning method used, represented as the percentage of animals that were successfully rendered insensible with a single application of the stunning device. Comparison with Other Options: /a. Extraction length: This does not relate to the stunning process and typically refers to the distance or measurement in extraction processes. /b. Caliber: This usually describes the diameter of a bullet or a firearm's chamber, not related to animal stunning. /c. Insensibility: While this term relates to the state of being unable to feel pain, it does not quantify the success rate of the stunning process.

Question 13:Bearings that utilize cylinders with approximate length/diameter ranging from 1:1 to 1:3 as rolling elements, normally used for heavy radial loads and useful for free axial movement of shaft.

A) needle bearings

B) tapered roller bearing

C) cylindrical roller bearing

D) taper-roller thrust bearing

Explanation: Cylindrical Roller Bearing: This type of bearing features cylindrical rollers as the rolling elements. The length-to-diameter ratio of the rollers is typically between 1:1 and 1:3, which allows them to support substantial radial loads while also permitting some axial movement. Comparison with Other Options: /a. Needle Bearings: These bearings use much longer, thinner rollers (needles) and typically have a length-to-diameter ratio greater than 3. They are primarily used for limited axial movement and lighter loads. /b. Tapered Roller Bearing: These bearings have conical rollers and are designed to handle both radial and axial loads but do not fit the described shape or use. /d. Taper-Roller Thrust Bearing: This type is designed for axial loads with tapered rollers and does not suit the description of heavy radial loads.

Question 14:For a straight thread, this is the diameter of the imaginary cylinder bounding the crest of an external thread or the root of an internal thread.

A) minor diameter

B) pitch diameter

C) major diameter

D) nominal diameter

Explanation: Major Diameter: This term refers to the largest diameter of a thread. For an external thread, it is the diameter at the crests, and for an internal thread, it is the diameter at the roots. Comparison with Other Options: /a. Minor Diameter: This is the smallest diameter of a thread, corresponding to the root of an external thread or the crest of an internal thread. /b. Pitch Diameter: This is the diameter at which the width of the thread and the width of the space between threads are equal. It is important for ensuring proper fit. /d. Nominal Diameter: This often refers to a rounded or standardized diameter that is generally used for measurement and may not correspond to a specific diameter in terms of threading.

Question 15:A type of driving mechanism for fans and blowers that uses hydraulic or magnetic couplings.

A) belt drive

B) direct-drive

C) variable drive

D) indirect drive

Here's an explanation: Indirect drive refers to a mechanism where the fan or blower is not directly connected to the motor. Instead, it uses an intermediary method to transmit power. This can include hydraulic or magnetic couplings, which allow for flexible power transfer and can offer advantages such as reduced maintenance and the ability to handle misalignments or varying loads more effectively. In contrast: /Belt drive (a) involves using a belt to transfer power from the motor to the fan or blower, which is another form of indirect drive but specifically uses belts. /Direct-drive (b) means the motor is directly connected to the fan or blower without intermediate mechanisms, resulting in fewer components and potentially lower maintenance. /Variable drive (c) usually refers to systems that allow for varying the speed of the fan or blower, such as through variable frequency drives (VFDs). This term focuses on the capability to adjust speeds rather than the coupling mechanism itself. So, since hydraulic or magnetic couplings are used in indirect mechanisms, "indirect drive" is the best fit for the given description.

Question 16:What instrument is used for checking whether a plane structure is flat and horizontally leveled?

A) lowerator

B) compass

C) leveling bubble

D) transit

Explanation: A leveling bubble (or spirit level) is specifically designed to check the flatness and horizontal alignment of surfaces. It has a bubble inside a liquid-filled vial, which indicates when the surface is level. /Lowerator is not a relevant tool for leveling. /Compass is used for direction finding, not leveling. /Transit is used for measuring angles and surveying, not directly for leveling surfaces.

Question 17: It is used with screws to add spring take-up to screw elongation.

A) conical spring washer

B) spring lock washer

C) plain washer

D) Toothed lock washer

Explanation: A conical spring washer provides axial flexibility and helps in maintaining tension in screws, compensating for changes in length due to thermal expansion or load changes. /Spring lock washer provides a locking function but not as much spring take-up. /Plain washer provides no spring action. /Toothed lock washer provides locking action through teeth, not spring take-up.

Question 18: A thread which winds in a clockwise and receding direction from the starting end, when viewed from that end.

A) left-handed thread

B) clockwise thread

C) counterclockwise thread

D) right-handed thread

Explanation: A right-handed thread is a common screw thread that advances when turned clockwise. /Left-handed thread advances counterclockwise. /Clockwise thread and counterclockwise thread are not standard terms for describing screw threads.

Question 19: It is the ratio of the cylinder volume on top of the piston when it is at its lowest position to the volume remaining above the piston when it is at its highest position.

A) compression ratio

B) tension ratio

C) volume ratio

D) ignition ratio

Explanation: The compression ratio is a key engine specification that affects engine performance and efficiency. Tension ratio, volume ratio, and ignition ratio are not relevant terms in this context.

Question 20: The highest power developed at a given speed.

A) maximum shaft power

B) maximum power

C) maximum brake power

D) maximum horse power

Explanation: PAES 117:2000/ maximum brake power - highest power developed at a given speed

Question 21: The power generated in the cylinders of an engine

A) indicated horsepower

B) draft horsepower

C) belt power

D) brake horsepower

Explanation: Indicated horsepower measures the power generated within the engine's cylinders, without accounting for losses in the system. /Draft horsepower is related to pulling power. /Belt power and brake horsepower refer to power output at the shaft or wheels, not within the cylinders.

Question 22: A premise or yard used for confinement of animals before slaughtering.

A) housing

B) chute

C) lairage

D) detention pen

Explanation: Lairage is a facility where animals are kept before slaughter to reduce stress. /Housing, chute, and detention pen have different functions, such as general shelter or guiding animals.

Question 23: A building for fabrication, repair and maintenance of machineries and where tools, supplies and parts are stored.

A) machine shed

B) repair shop

C) workshop

D) automotive center

Explanation: A workshop is a facility dedicated to repair, maintenance, and fabrication activities. /Machine shed typically stores machinery. /Repair shop and automotive center are more specialized types of workshops.

Question 24:Couplings that are used when the shafts are virtually collinear and when they remain in a fixed angular relation with respect to each other.

A) flexible couplings

B) rigid couplings

C) friction couplings

D) cylindrical couplings

Explanation: Rigid couplings are used to connect two shafts that must remain in the same axis without any angular or parallel misalignment. /Flexible couplings allow some movement or misalignment. /Friction couplings are used to transmit torque via friction. /Cylindrical couplings isn't a standard term.

Question 25: An engine on which the fuel and air mixture is first introduced inside the cylinder in gaseous condition. It is then compressed and ignited resulting to the generation of power.

A) spark-ignition engine

B) compression ignition engine

C) internal combustion engine

D) external combustion engine

Explanation: In a spark-ignition engine, the air-fuel mixture is introduced into the cylinder and ignited by a spark plug. /Compression ignition engines ignite fuel by compression, as in diesel engines. /Internal combustion engines can include both types, but are broader in definition. /External combustion engines have external heat sources, like steam engines.

Question 26: It is the distance (in millimeters), measured parallel to the thread axis, between corresponding points on adjacent thread forms in the same axial plane on the same side of the axis.

A) pitch

B) bore

C) diameter

D) length

Explanation: Pitch is the distance between two corresponding points on adjacent threads along the axis of the screw. /Bore refers to the diameter of a hole. /Diameter is the full width of the screw or bolt. /Length is the overall length, not the distance between threads.

Question 27: A process of classifying fruits and vegetables into groups according to quality and size.

A) sorting

B) inspection

C) grading

D) primary processing

Explanation: Grading involves sorting produce based on quality and size criteria. /Sorting might refer to basic separation. /Inspection refers to checking for defects. /Primary processing involves initial steps like washing or cutting, not classification.

Question 28: It is a tool used for displacing soil at various depths for soil research and analysis or for digging post holes by means of a rotating helical lighting.

A) soil drill

B) soil dig

C) soil sampler

D) soil auger

Explanation: A soil auger is used to drill into the soil for sampling or digging holes, featuring a helical blade. /Soil drill and soil dig are not standard terms. /Soil sampler refers to general sampling tools, not specifically the auger type.

Question 29: It is the soil physical conditions which can be produced by tillage and is necessary based on utilitarian and/or economic considerations.

A) tillage requirement

B) cultivation requirements

C) harrowing requirements

D) soil requirements

Explanation: Tillage requirement refers to the necessary physical conditions of soil for optimal cultivation based on practical needs. /Cultivation requirements relate more to crop needs. /Harrowing requirements focus on specific tools. /Soil requirements are general and not specific to tillage.

Question 30: Fine and powder-like particles parenchymatous cells that are extracted from the coconut husk.

A) coconut shell

B) coconut peat

C) coconut coir

D) coconut pot

Explanation: Coconut peat, also known as coir pith, is the fine material derived from the coconut husk. /Coconut shell is the hard outer layer. /Coconut coir refers to the fibrous material. /Coconut pot is not a standard term.

Question 31: A greenhouse shall be oriented in a ________ direction.

A) east-west

B) north-south

C) northeast-southwest

D) northwest-southeast

Explanation: A north-south orientation allows for even sunlight exposure throughout the day in many latitudes, which is ideal for plant growth. /East-west orientation might cause uneven light distribution. /Northeast-southwest and northwest-southeast are not common orientations for greenhouses.

Question 32: Line of intersection of the pitch cylinder by a plane perpendicular to the axis of the gear.

A) pitch circle

B) module

C) normal module

D) addendum

Explanation: The pitch circle is a key concept in gear design, defining the line of action for meshing gears. /Module and normal module refer to specific gear measurements. /Addendum is the height of the gear tooth above the pitch circle.

Question 33: Length of the arc of the pitch circle between two consecutive corresponding points of adjacent teeth.

A) circular pitch

B) clearance

C) dedendum

D) normal circular pitch

Explanation: Circular pitch measures the distance between similar points on adjacent gear teeth along the pitch circle. /Clearance is the space between mating gear teeth. /Dedendum is the depth of the gear tooth below the pitch circle. /Normal circular pitch would be a modified measurement in the normal plane.

Question 34: The ratio between the number of teeth of the driven and the driver gear

A) gear ratio

B) tooth ratio

C) pitch ratio

D) none of these

Explanation: Gear ratio is a fundamental concept that determines the mechanical advantage and speed between gears. /Tooth ratio and pitch ratio are not standard terms.

Question 35: A mechanical grain dryer wherein the grain in fixed volume is held in the drying chamber until the desired moisture content is reached.

A) recirculating type

B) flat-bed type

C) batch type

D) continuous flow dryer

A batch type grain dryer processes a fixed amount of grain at a time, as opposed to continuous systems. /Recirculating type moves grain repeatedly through the system. /Flat-bed type is another batch method but with a specific layout. /Continuous flow dryer constantly moves grain through the system.

Question 36: A side board made up of well machined lumber strips properly dried and glued together.

A) particle board

B) lumber core

C) interior plywood

D) exterior plywood

Explanation: Lumber core is a type of engineered wood panel made from strips of wood glued together, often used in furniture. /Particle board is made from wood particles. /Interior and exterior plywood refer to the type of plywood based on usage, not construction method.

Question 37: The panels that discussed under adhesive bonded panels are the following except:

A) Lumber Core

B) Particle Board

C) Fiber Board

D) Plywood and Ply Board

Explanation: Fiberboard is a type of engineered wood product, but not typically classified under adhesive-bonded panels in the same way as the others. /Lumber Core, Particle Board, and Plywood are all considered adhesive-bonded panels.

Question 38: Self-propelled, wheeled, track-laying or semi track-laying machine primarily designed to pull, push, carry and/or operate trailers or provide power to implements and machines used for agricultural, forestry and other related works

A) agricultural tractor

B) pedestrian-operated machine

C) right-hand and left-hand

D) self-propelled machine

Explanation: An agricultural tractor is designed specifically for heavy-duty work in agriculture and related fields. /Pedestrian-operated machine is manually operated. /Self-propelled machine is a general term that could apply to other types of machinery. /Right-hand and left-hand are not applicable here.

Question 39: Tillage operation which move soil to establish a desired soil elevation and slope.

A) land grading

B) land forming

C) land planing

D) land moving

Explanation:Land forming: Tillage operations which move soil to create desired soil configurations. Forming may be done on a large scale such as contouring or terracing, or on a small scale such as ridging or pitting. /Land grading: Tillage operations which move soil to establish a desired soil elevation and slope. Examples: leveling, contouring, cutting, and filling. /Land planing: A tillage operation that cuts and moves small layers of soil to provide a smooth, refined surface condition.

Question 40: Ratio of the weight of the milled rice to the total weight of palay expressed in percent.

A) milling recovery

B) milling efficiency

C) milling degree

D) milling recovery index

Explanation: Milling recovery measures the efficiency of rice milling in terms of the percentage of usable rice produced. /Milling efficiency refers to the effectiveness of the milling process. /Milling degree describes the extent of milling. /Milling recovery index is a derived term, less common.

Question 41: System in which plant residue is specifically left on or near the soil surface.

A) minimum tillage

B) mulch tillage

C) optimum tillage

D) precision tillage

Explanation: Mulch tillage involves leaving crop residue on the surface to reduce erosion and conserve moisture. /Minimum tillage involves reducing the amount of tillage. /Optimum tillage aims for the best results, not necessarily involving residue. /Precision tillage focuses on precise, targeted tillage.

Question 42: One of the priming methods that develops a vacuum sufficiently enough for atmospheric pressure to force the liquid to flow through the suction pipe into the pump casing without priming the pump.

A) non- self -priming

B) self-priming

C) priming

D) one priming

Explanation: A self-priming pump creates a vacuum on its own to initiate fluid flow, eliminating the need for manual priming. /Non-self-priming requires manual priming. /Priming is the general process of filling a pump to initiate flow. /One priming is not a standard term.

Question 43: Radius of the smallest circle described by the outermost point of the tractor.

A) radius of turning diameter

B) radius of turning point

C) radius of turning circle

D) radius of turning area

The turning circle radius is the smallest circular path a vehicle can take. /Radius of turning diameter is incorrect terminology. /Radius of turning point isn't a standard measurement. /Radius of turning area is not specific.

Question 44: Valve used to stop the flow of fluid.

A) cut-off valve

B) throttling valve

C) check valve

D) NOTA

Explanation: A cut-off valve is designed to stop fluid flow completely. /Throttling valve controls flow rate. /Check valve prevents backflow, not necessarily stopping flow.

Question 45: More popularly known as Teflon, has good dynamic mechanical properties and sufficient flexibility, and ideally suited for use as dynamic seals and bearings even when the stress is extreme.

A) polypropylene

B) polyvinyl chloride

C) polyethylene

D) polyterafluoroethylene (PTFE)

Explanation: PTFE, commonly known as Teflon, is widely used for its non-stick properties and chemical resistance. /Polypropylene, polyvinyl chloride, and polyethylene are different types of plastics with different properties.

Question 46: mechanical device designed specifically to hold, join, or maintain equilibrium of single or multiple components.

A) screw

B) fastener

C) length of Fastener

D) NOTA

Explanation: Fasteners are hardware devices like bolts and screws used to join or secure components. /Screw is a type of fastener, but the broader term is correct. /Length of fastener refers to the dimension, not the device itself.

Question 47: A flexible machine element used to transmit motion and power between two shafts, the cross section of which is shaped roughly like regular trapezoid outlined by the base, sides and top of the belt.

A) V-belt

B) 1chain and sprocket drive

C) flat belt

D) Idler

Explanation: A V-belt is a common type of belt with a trapezoidal cross-section, used in many power transmission applications. /Chain and sprocket drive uses chains, not belts. /Flat belt has a rectangular cross-section. /Idler is not a belt but a component that guides or supports the belt.

Question 48: The specified load which the fastener must withstand without any indication of permanent deformation after the load is released.

A) radial load

B) fastener load

C) axial load

D) proof load

Explanation: The proof load is a safety test load that a fastener must be able to bear without permanent deformation. /Radial load is perpendicular to the axis. /Fastener load is too general. /Axial load is along the axis of the fastener.

Question 49: Type of shaft and hub assembly that hub is put into the key fixed on the shaft.

A) normal type

B) fixed type

C) sliding type

D) fastening type

Explanation: A fastening type refers to a connection where the hub is secured onto a shaft using a key. /Normal type is not specific. /Fixed type implies no movement. /Sliding type allows relative movement between parts.

Question 50: Type of bearings that are designed to support and mount rotating shafts. They are used in drives where quietness in operation and rigidity is a requirement

A) anti-friction bearings

B) Journal bearings

C) ball bearings

D) Rigid bearings

Explanation: Anti-friction bearings, like ball bearings, reduce friction and support rotating shafts, ensuring quiet operation. /Journal bearings are used for sliding motion. /Ball bearings are a type of anti-friction bearing. /Rigid bearings refer to a specific kind of mounting but are less common than anti-friction bearings in this context.

Question 51: A medium that supports the shaft preventing metal to metal contact.

A) Fluid

B) Lubricant

C) Journal

D) Roller

Explanation: Lubricants create a film between metal surfaces, reducing friction and wear. /Fluid is too general. /Journal refers to the part of the shaft in contact with the bearing. /Roller is a bearing element.

Question 52: Type of mechanical stunner that uses blank cartridge explosion to propel the captive bolt into the forehead of the animal.

A) pistol type

B) pneumatic type

C) cylinder type

D) cartridge type

Explanation: Cartridge type stunners use an explosive charge to drive a bolt for humane slaughter. /Pistol type could refer to various types of stunners. /Pneumatic type uses compressed air. /Cylinder type is not standard terminology.

Question 53: Number of hogs dehaired per unit time, expressed in heads per hour.

A) discharge height

B) dehairing rate

C) effective dehairing height

D) dehairing time

Explanation: Dehairing rate measures the efficiency of the dehairing process in terms of output per hour. /Discharge height refers to the height from which materials are discharged. /Effective dehairing height is not a standard term. /Dehairing time would refer to the duration, not the rate.

Question 54: The statistical representation of the precision of distribution of feed ingredients.

A) feed

B) feed mixer

C) coefficient of variation

D) mixing rate

Explanation: The coefficient of variation is a statistical measure of the distribution's consistency. /Feed and feed mixer refer to ingredients and the mixing process. /Mixing rate is not the correct statistical term.

Question 55: The ratio of the amount between the total weights of the fiber extracted to the total amount of fiber content on a dry basis.

A) fiber quality

B) effective allowance

C) extraction efficiency

D) extraction loss

Extraction efficiency measures how effectively fiber is extracted from the raw material. /Fiber quality is about the properties of the fiber. /Effective allowance is not relevant. /Extraction loss refers to the material lost during extraction.

Question 56: Type of forage chopper where the chopped materials are dropped down to the bottom of machine.

A) let-fall type

B) throw-away

C) blow-up type

D) NOTA

Explanation: Let-fall type choppers allow chopped material to fall to the bottom for collection. Throw-away and blow-up type refer to different methods of dispersal.

Question 57: Any crop used as silage, soilage or animal feed, usually mixed with fermenting agents.

A) fruit

B) forage

C) fiber

D) feed

Explanation: Forage crops are grown specifically for animal feed, often preserved as silage. /Fruit and fiber refer to other crop types. /Feed is the general term for food given to animals.

Question 58: It is the power recommended by the manufacturer for satisfactory operation under continuous duty condition within a specified speed range.

A) continuous power

B) continuous brake

C) continuous brake power

D) continuous brake horse power

Explanation: PAES 117 : 2000 / Continuous brake power power recommended by the manufacturer for satisfactory operation under continuous duty condition within a specified speed range engine (heat engine)

Question 59: It is a series of events occurring one after the other in a definite order and repeats the events after the last one has occurred.

A) order

B) cycle

C) series

D) turns

Explanation: A cycle is a sequence of events that repeats, commonly used in engines and processes. /Order refers to sequence, not repetition. /Series is a broader term for a set of related events. /Turns is not specific to cycles.

Question 60: Volume of fuel consumed by the engine on per hour basis.

A) specific fuel consumption

B) fuel consumption

C) fuel ratio

D) consumed fuel

Explanation: Specific fuel consumption measures the efficiency of fuel usage, typically in grams per kilowatt-hour. /Fuel consumption is a general term. /Fuel ratio compares different fuel types. /Consumed fuel refers to the amount used, not rate.

Question 61: AA tillage action and transport operations utilized to loosen, load, carry, and unload soil.

A) land forming

B) land grading

C) earthmoving

D) harrowing

Explanation: Earthmoving refers to the process of moving large quantities of soil, usually involving equipment like bulldozers and excavators. /Land forming and land grading are more specific types of earthmoving. /Harrowing is a tillage process, not for moving soil.

Question 62: It is the overall height of the implement measured from the topmost point to its lowest point.

A) operating height

B) maximum height

C) minimum height

D) transport height

Explanation: transport height overall height of the implement measured from the topmost point to its lowest point Reference: PNS/PAES 164: Agricultural machinery

Question 63: Having one or more integral power units which propel and operate the machine, designed to carry out agricultural operations while on the move.

A) agricultural tractor

B) pedestrian-operated machine

C) right-hand and left-hand

D) self-propelled machine

Explanation: A self-propelled machine is powered and capable of moving independently, often used in agriculture. /Agricultural tractor is a specific type of self-propelled machine. /Pedestrian-operated machine is manually controlled. /Right-hand and left-hand refer to directional terms, not machine types.

Question 64: Subsoiling under the plant row prior to planting usually intended for subsurface drainage.

A) minimum tillage

B) mulch tillage

C) optimum tillage

D) precision tillage

Explanation: Minimum tillage aims to disturb the soil as little as possible while achieving the desired agricultural outcome, often including subsoiling. /Mulch tillage focuses on leaving residue on the surface. /Optimum tillage is a general term for the best tillage practice. /Precision tillage is a targeted approach but not specific to subsoiling.

Question 65: Filling up the pump with water to displace or evacuate the entrapped air through a vent and create a liquid seal inside the casing.

A) priming

B) pump

C) lifters

D) premier

Explanation: Priming a pump ensures that it is ready to move fluid without air blockages. /Pump is the device being primed. /Lifters are components in an engine, not a pump. /Premier is not relevant.

Question 66: Long hollow cylinder of specified thickness whose nominal size is approximated by the inside diameter.

A) tube

B) Bars

C) pipe

D) Deformed bars

Explanation: Pipes are typically specified by their internal diameter and are used for conveying fluids. /Tube is also hollow but usually specified by outer diameter. /Bars are solid, not hollow. /Deformed bars refer to rebar used in construction.

Question 67: Long hollow product of round or any other cross-section whose size is specified by the outside dimensions

A) tube

B) bars

C) pipe

D) deformed bars

Explanation: Tubes are specified by their outside diameter and wall thickness, differing from pipes in that respect. /Pipe is specified by inside diameter. /Bars are solid. /Deformed bars refer to rebar.

Question 68: These are used to connect shafts with much larger values of misalignment than can be tolerated by the other types of flexible couplings.

A) rivet

B) universal joint

C) splines

D) gear

Explanation: Universal joints accommodate large misalignments, commonly used in driveshafts. /Rivet is for permanent joining. /Splines allow for torque transfer with some axial movement. /Gear is used in power transmission but not for misalignment.

Question 69: Unplowed portion of the field at both ends of the furrow strip initially used for turning the draft animal/tractor and equipment.

A) freeland

B) turning point

C) headland

D) undisturbed land

Explanation: Headlands are used for turning and maneuvering machinery during fieldwork. /Freeland is not a standard term. /Turning point refers to a specific location, not the unplowed area. /Undisturbed land is too general.

Question 70: A type of motor built in smaller frames with a continuous rating of less than 1Hp, open-type and operating at 1700-1800 rpm.

A) integral Hp

B) fractional Hp

C) 1split-phase

D) synchronous motor

Explanation: Fractional horsepower motors are small, often used in light-duty applications. /Integral Hp refers to motors with ratings above 1 Hp. /Split-phase is a type of motor start method. /Synchronous motor operates at a constant speed.

Question 71: Regulates the amount of fertilizer to be discharged by fertilizer applicator.

A) gauge wheel

B) 1metering device

C) delivery tube

D) flicker

Explanation: Metering Device: This component controls the quantity of fertilizer that is applied by precisely regulating the flow rate as the applicator moves over the field. Comparison with Other Options: /a. Gauge Wheel: This is primarily used to maintain the correct operating height of the applicator and does not control fertilizer discharge. /c. Delivery Tube: This refers to the pathway through which the fertilizer is transported from the metering device to the ground, but it does not regulate the amount. /d. Flicker: This term does not typically relate to the regulation of fertilizer application in standard agricultural practices.

Question 72: Refers to the discharge of pump at maximum efficiency.

A) capacity

B) pump efficiency

C) duty rating

D) performance

Explanation: Duty Rating: This term typically describes the operation of a pump under specific conditions where it operates at its maximum efficiency point, often indicating the flow rate and head at which the pump performs best. Comparison with Other Options: /a. Capacity: This refers to the volume of fluid the pump can move over a period of time but does not specifically indicate the conditions under which it operates at maximum efficiency. /b. Pump Efficiency: This represents the ratio of the useful work done by the pump to the energy input, but it is not a specific measure of the discharge. /d. Performance: This is a broad term that encompasses various aspects of pump operation, including flow rate, head, and efficiency, but does not specifically refer to the discharge at maximum efficiency.

Question 73: The articulated connection between a link and an implement.

A) link point

B) hitch point

C) three-point hitch linkage

D) NOTA

Explanation: Link Point: This term specifically refers to the connection point where a link (such as a drawbar or other connecting member) attaches to an implement, allowing for movement and articulation. Comparison with Other Options: /b. Hitch Point: This typically refers to the connection between the tractor and the hitch system, not specifically between a link and an implement. /c. Three-Point Hitch Linkage: This is a specific type of hitch system that includes three points of attachment, which is more complex than the simple connection referred to in the question. /d. None of the Above: This option is incorrect, as "link point" is a valid term for the articulated connection being described.

Question 74: The articulated connection between a link and a tractor.

A) link point

B) hitch point

C) three-point hitch linkage

D) NOTA

Explanation: Hitch Point: This term refers to the specific point where an implement or link is attached to a tractor, allowing for pivoting and movement. Comparison with Other Options: /a. Link Point: This term is less commonly used and is not a standard designation for tractor connections. /c. Three-Point Hitch Linkage: While this is a type of hitch commonly used in tractors, the term itself refers to the entire system rather than the specific connection point. /d. None of the Above: This option is incorrect, as "hitch point" accurately describes the connection being asked about.

Question 75: A soil auger shall operate with a maximum noise emission of ____.

A) 94 dB

B) 92 dB

C) 96 dB

D) 90 dB

Explanation: Noise emission limits for various types of equipment, including soil augers, often fall around this level according to regulations and standards governing occupational noise exposure.

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