VOLUME 9 - AREA 1
AGRICULTURAL AND BIOSYSTEMS POWER, ENERGY AND MACHINERY ENGINEERING AND ALLIED SUBJECTS (96 Questions)
1. Four-wheel tractors are characterized as:
A) low speed-low torque
B) high speed-high torque
C) low speed-high torque
D) high speed-low torque
2. Type of power transmission system where the speed ratio depends on the teeth ratio of the two members:
A) direct coupling
B) chain and sprocket
C) belt and pulley
D) b and c
3. Standard tractors are 4-wheel tractors with power rating of:
A) 32 to 49 hp
B) 50 to 69 hp
C) 70 to 89 hp
D) all of the above
4. Standard light-medium tractors have engine rating of:
A) 32 – 49 hp
B) 50 – 69 hp
C) 70 – 89 hp
D) 90 – 110 hp
5. Type of transmission system where the speed ratio depends on the teeth ratio of the two members:
A) gears
B) chain and sprocket
C) belt and pulley
D) a and b
6. Type of power transmission system where clutch action is possible:
A) direct coupling
B) chain and sprocket
C) belt and pulley
D) gears
7. Type of power transmission system where the speed ratio depends on the teeth ratio of the two members:
A) direct coupling
B) belt and pulley
C) gears
D) b and c
8. The gearbox placed on first gear will develop:
A) high torque - high speed
B) low torque – low speed
C) high torque – low speed
D) low torque – high speed
9. Single-axle machine powered by an engine ranging from 3 to 15 hp:
A) 2-wheel tractor
B) compact tractor
C) standard tractor
D) general-purpose tractor
10. Type of power transmission system where the direction of rotation of the two members are opposite each other:
A) direct coupling
B) chain and sprocket
C) belt and pulley
D) gears
11. The differential of a tractor is required when making a:
A) right turn
B) left turn
C) going straight
D) a and b
12. Type of 2-wheel tractor equipped with a single-bottom moldboard plow and comb-tooth harrow:
A) traction type
B) rotary type
C) standard type
D) general-purpose type
13. Type of power transmission system where the center-to-center distance between shafts is dictated by the diameters of the members:
A) direct coupling
B) chain and sprocket
C) belt and pulley
D) gears
14. It is a special arrangement of gears so constructed and located in the transmission system of a 4-wheel tractor that permits one driving wheel to rotate slower or faster than the other and at the same time propel its share of the load:
A) gear box
B) differential
C) clutch
D) power take-off
15. In a rice combine harvester, what operating part need adjustment if substantial amount of grains still clinging on the rice straws are discharged at the rear of the machine?
A) Cutter bar
B) Threshing drum
C) Blower
D) Straw walkers
16. In a four-stroke cycle diesel engine, what can possibly be wrong if it fails to develop full power?
A) Improper valve timing
B) Worn out piston rings
C) Air entering the cylinder during the intake stroke is insufficient
D) Faulty spark plug
17. What fuel is appropriate for a spark ignition engine running at 3,600 rpm?
A) Diesel
B) Regular gasoline
C) Unleaded gasoline
D) LPG
18. Under the same temperature, how do you compare the densities of diesel and gasoline fuels?
A) Gasoline is denser than diesel
B) Diesel is denser than gasoline
C) The densities of diesel and gasoline are equal
D) None of the above
19. The lowest cylinder pressure in a 4-stroke cycle engine is developed during what event or stroke?
A) Intake
B) Compression
C) Power
D) Exhaust
20. What is the most important reason for the presence of oil in the crank case?
A) To absorb excess heat produced during engine operation
B) To prevent excessive wear and tear
C) To reduce friction
D) All of the above
21. What is the color of the flame resulting from the burning of biogas?
A) Orange
B) Yellow
C) Bluish white
D) pinkish
22. Which among the engine parts below has a reciprocating movement?
A) Main shaft
B) Connecting rod
C) Crank shaft
D) Piston
23. In machinery cost accounting this item is not an actual cash outflow:
A) Fuel cost
B) Repairs and maintenance
C) Labor cost
D) Depreciation
24. It is an engine part that allows the movement of burned gases from the cylinder:
A) Air filter
B) Inlet valve
C) Exhaust valve
D) Governor
25. What part of the thresher achieves the same purpose as winnowing in manual threshing?
A) Threshing drum
B) Cylinder
C) Straw rack and sieves
B) Blower
26. What do you call the horizontal distance between the front and rear axles of a 4-wheel tractor?
A) Over-all length
B) Wheel base
C) Thread distance
D) None of the above
27. It is a field operation performed by a furrower in between the rows of corn during its early vegetative stage:
A) Furrowing
B) Cultivation
C) Land preparation
D) All of the above
28. A corn planting equipment which is operated and powered by a man:
A) Grain drill
B) Hand jabber
C) Corn picker
D) Broadcaster
29. What planting equipment does not use seeds as planting material?
A) Broadcaster
B) Field distributor
C) Grain drill
D) Transplanter
30. It is the part of the moldboard plow that slides on the vertical surface of the unplowed part of the field:
A) Plow bottom
B) Plow sole
C) Landside
D) Land
31. This farm machinery consist of discs mounted individually on a common frame:
A) Disc plow
B) Disc harrow
C) Disc cultivator
D) Disc furrower
32. The seeds planted by this seeding machine do not assume any distinguishable pattern?
A) Grain drill
B) Distributor
C) Broadcaster
D) Transplanter
33. What is the metering mechanism of a rice drum seeder?
A) Fluted type
B) Seed plate
C) Orifice type
D) Pump type
34. It is the ridge formed by two furrow slices thrown on the same strip:
A) Back furrow
B) Buck furrow
C) Dead furrow
D) Headland
35. In plowing, the area that is not yet plowed is called __________?
A) Alienable and disposable land
B) Headland
C) Land
D) Field capacity
36. This refers to the number of degrees of crankshaft rotation during which the inlet valve remains open:
A) Degrees of freedom
B) Exhaust valve range
C) Inlet valve range
D) Clearance
37. It is a part of the moldboard plow which enables it to throw the furrow slice to one side of the implement’s center of resistance:
A) Vertical suction
B) Horizontal clearance
C) Moldboard
D) Frog
38. The center-to-center distance between the two rear wheels of a tractor is called ________:
A) Thread distance
B) Wheel base
C) Vertical clearance
D) Wheel diameter
39. It is the arrangement of two disc gangs where one gang is in front of the other; one gang throws soils on the left side while the other gang throws it to the right:
A) Single acting
B) Double acting
C) Offset
D) Tandem
40. What happens to the weight distribution of the tractor mass between the front wheels and the rear wheels of a tractor when a horizontal load at the rear is applied?
A) A part of the front wheel load is transferred to the rear wheels
B) A part of the rear wheel load is transferred to the front wheels
C) The load on the front wheels will become equal to the load on the rear wheels
D) All of the tractor weight will be concentrated on the rear wheels.
41. This part of the tractor is located in a position convenient to the operator’s left foot when the tractor is being operated:
A) Brake pedal
B) Steering wheel
C) Hand brake
D) Clutch pedal
42. When used on illuminated displays of tractor, what does color “red” represents?
A) Normal operating condition
B) Outside normal operating units
C) Failure or serious malfunction
D) Tractor performance is superb
43. It is a primary tillage operation which manipulates the soil to a depth greater than 300 mm:
A) Ordinary tillage
B) Deep tillage
C) Cultivation
D) Secondary tillage
44. It is a tillage operation which moves soil to establish a desired soil elevation slope:
A) Land planning
B) Land grading
C) Land preparation
D) Bedding
45. It is a tillage system that retains a minimum of 30% residue cover on the soil surface:
A) Primary tillage
B) Secondary tillage
C) Minimum tillage
D) Conservation tillage
46. A rotavator is a kind of what kind of tillage equipment?
A) General purpose tillage equipment
B) Primary tillage equipment
C) Secondary tillage equipment
D) Minimum tillage equipment
47. It is a soil-tool reaction in which soil slides over the surface of the tillage tool without significant adhesion:
A) Sliding
B) Scouring
C) Side draft
D) Compaction
48. Walking-type agricultural tractor is another name for ____________:
A) Four-wheel tractor
B) Hand tractor
C) Track laying tractor
D) Garden tractor
49. What mechanism usually serves as a clutch that engages or disengages a hand tractor from its power unit?
A) Hydraulic system
B) Idler pulley
C) Overrunning clutch
D) None of the above
50. It is the ratio between the brake power and the indicated power of an internal combustion engine:
A) Thermal efficiency
B) Generator efficiency
C) Traction efficiency
D) Mechanical efficiency
51. The overall weight of the lever-operated knapsack sprayer, including its component parts, when fully loaded with water shall not exceed _______:
A) 18 kg
B) 20 kg
C) 22 kg
D) 30 kg
52. It is any material added to the tractor for the purpose of enhancing traction or stability:
A) Ballast
B) Stabilizer
C) Coulter
D) Jointer
53. It is the ratio of the effective field capacity and the theoretical field capacity:
A) Field efficiency
B) Mechanical efficiency
C) Transmission efficiency
D) Tractive efficiency
54. The lug marks or ‘arrows’ made by a tractor’s drive wheels are pointing north. What direction did the tractor go if the wheels were properly mounted?
A) North
B) South
C) East
D) West
55. It is the part of the moldboard plow that facilitates the cutting of the furrow:
A) Share
B) Wing
C) Moldboard
D) Beam
56. What part of the tractor ensures that air used for the combustion of fuel is relatively free of suspended solids and other impurities?
A) Inlet valve
B) Air cleaner
C) Muffler
D) Carburetor
57. How many strokes of the piston is required to complete one cycle in the engine of brush cutters?
A) 1
B) 2
C) 3
D) 4
58. This is the collective term to mean the group of tractor fuels or fuel additives that are derived from crops such as cassava, sugar cane, sweet sorghum, coconut and jathropa:
A) Biofuel
B) Biodiesel
C) Cocodiesel
D) Bioethanol
59. What kind of thresher requires the operator to hold the rice stalks while the grains are stripped from the panicles?
A) Hold-on thresher
B) Throw-in thresher
C) Axial flow thresher
D) Tangential flow thresher
60. It is the practice of plowing in plant residues such as corn stalks and leaves or peanut biomass to add organic matter to the soil and prevent excessive evaporation:
A) Conservation tillage
B) Stubble mulching
C) Minimum tillage
D) Organic agriculture
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