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PART 8 - PNS-BAFS-PHILLIPINE AGRICULTURAL ENGINEERING STANDARD AUTO-CORRECT EXAM

Thursday, September 18, 2025


RED (WRONG ANSWER)  / GREEN (CORRECT ANSWER) 


Question 1: A clutch which produces its torque by virtue of the centrifugal force of weights pressing against the driving or frictionally driven member.
A) Positive clutch
B) Centrifugal clutch
C) Cone clutch
D) Friction clutch
Explanation: PAES 318:2002
Question 2: A clutch that consists of a frustum of a cone, so fitted to a shaft by means of a feather key that it can be pushed into an opposite engaging surface rigidly attached to the other shaft.
A) Cone clutch
B) Positive clutch
C) Centrifugal clutch
D) Friction clutch
EXPLANATION: PAES 318:2002.
Question 3: Clutches which are designed to transmit torque without slip, jaw clutches are the most common. These are made with square jaws for driving in either directions, or spiral jaws for unidirectional drive. These are used for slow-moving shafts, where sudden starting action is not objectionable and where the inertia of the moving parts is relatively small.
A) Centrifugal clutch
B) Friction clutch
C) Positive clutch
D) Cone clutch
EXPLANATION:PAES 318:2002.
Question 4: Couplings which are used when the shafts are virtually collinear and when they remain in a fixed angular relation with respect to each other (except for angular deflection).
A) Rigid couplings
B) Clamp shaft couplings
C) Flexible coupling
D) Flange face coupling
Explanation: PAES 318:2002
Question 5: Coupling essentially a split and bolted sleeve coupling, proportioned to clamp firmly on the shafts.
A) Flange face coupling
B) Clamp shaft couplings
C) Flexible coupling
D) Rigid couplings
Explanation:PAES 318:2002
Question 6: Couplings which are commonly used in permanent installations for heavy loads and large sizes and particularly for vertical drives, as agitators.
A) Flange face coupling
B) Flexible coupling
C) Clamp shaft couplings
D) Rigid couplings
Explanation: PAES 318:2002.
Question 7: Couplings which are designed to connect shafts which are misaligned either laterally or angularly. A secondary benefit is the absorption of impacts due to fluctuations in shaft torque or angular speed.
A) Rigid couplings
B) Flexible coupling
C) Clamp shaft couplings
D) Flange face coupling
Explanation:PAES 318:2002
Question 8: Rolled rectangular section of thickness over 0.15 mm up to 6.0 mm, with sheared, slit or sawn edges.
A) Galvanized iron sheet
B) Aluminium and aluminium alloy sheet
C) Hot-rolled steel sheet
D) Continuous hot-dip aluminium/zinc-coated steel sheet
Explanation: PAES 317:2002
Question 9: Metal product cut to the standard or specified length and has a nominal base metal thickness ranging from 0.20 mm to 1.6 mm and a flat width of 760 mm to 1,220 mm.
A) Galvanized iron sheet
B) Aluminum and aluminum alloy sheet
C) Continuous hot-dip aluminum/zinc-coated steel sheet
D) Hot-rolled steel sheet
Explanation: PAES 317:2002
Question 10:Product supplied in cut lengths and produced by cutting from a coil rolled on a continuous mill. It has a width of at least 600 mm and a nominal thickness of less than 3 mm. The edges of the sheet may be either trimmed or untrimmed
A) Galvanized iron sheet
B) Continuous hot-dip aluminium/zinc-coated steel sheet
C) Hot-rolled steel sheet
D) Aluminum and aluminium alloy sheet
Explanation: PAES 317:2002
Question 11: Product obtained by hot-dip coating steel sheet coils on a continuous aluminium/zinc coating line to produce either coated coils or cut lengths
A) Aluminium and aluminium alloy sheet
B) Continuous hot-dip aluminium/zinc-coated steel sheet
C) Galvanized iron sheet
D) Hot-rolled steel sheet
Explanation: PAES 317:2002.
Question 12: Term applied to changes in physical and mechanical properties of low carbon steel that occur with the passage of time and adversely affect formability.
A) Deoxiganation
B) Proof Stress
C) Attestion
D) Ageing
Explanation: PAES 317:2002
Question 13: Long hollow cylinder of specified thickness whose nominal size is approximated by the inside diameter.
A) Bars
B) Tube
C) Pipes
D) None of the above
Explanation: PAES 316:2002
Question 14:Long hollow product of round or any other cross-section whose size is specified by the outside dimensions.
A) Hose
B) Pipes
C) Tubes
D) Bars
Explanation: PAES 316:2002
Question 15: In surface treatment for metal sheets and plates, what letter is designated for oiling?
A) D
B) C
C) B
D) A
Explanation: PAES 317:2002
Question 16: In surface treatment for metal sheets and plates, what letter is designated for Mill passivation plus oiling?
A) D
B) A
C) B
D) C
Explanation: PAES 317:2002
Question 17: In surface treatment for metal sheets and plates, what letter is designated for Mill passivation?
A) C
B) B
C) D Splitting
D) A
Explanation: PAES 317:2002
Question 18:In surface treatment for metal sheets and plates, what letter is designated for no surface treatment?
A) A
B) B
C) C
D) D
Explanation: PAES 317:2002
Question 19: Pipes are classified according to __.
A) Weight
B) Shape
C) Color
D) None
Explanation: PAES 316:2002
Question 20: Tubes are classified according to ___.
A) Color
B) Weight
C) Shape
D) NOTA
Explanation: PAES 316:2002
Question 21: An externally threaded fastener capable of being inserted into holes in assembled parts, of mating with preformed internal thread or forming its own thread, and of being tightened or released by torquing the head.
A) Nuts and bolts
B) Washers
C) Screws
D) Nail
Explanation: PAES 313:2001
Question 22: Which of the following is not a type of screw head?
A) Full Dog Head
B) Flay countersunk head
C) Fillister head
D) NOTA
Explanation: PAES 313:2001.
Question 23: A headed pin of metal used for uniting two or more pieces by passing the shank through a hole in each piece and then by beating or pressing down the plain end so as to make a second head.
A) Bolts and nuts
B) screws
C) Pins
D) Rivet
Explanation:  PAES 313:2001
Question 24: A type of riveted joint wherein the plates overlap each other and are held together by one or more rows of rivets.
A) Lap-joint
B) Pitch joint
C) Butt joints
D) Clinch joints
Explanation: PAES 312:2001.
Question 25: An externally threaded fastener designed for insertion through holes in assembled parts, and normally tightened or released by torquing a nut.
A) Nail
B) Bolts
C) Nuts
D) Washers
Explanation: PAES 311:2001
Question 26: The part of the rotating shaft, axle, roll or spindle that turns in a bearing.
A) Journal
B) Bearing
C) Pillow block
D) Screws
Explanation: PAES 310:2001
Question 27: Gears which are used to transmit motion and power to shafts having intersecting axes.
A)Bearing
B) Bevel gears
C) Miter gears
D) None of the above
Explanation: PAES 308:2001
Question 28: Bevel gears whose teeth are straight but the sides are tapered so that they would intersect the axis at a common point called the pitch cone apex if extended inward.
A) Bevel gears
B) Straight bevel gears
C) Miter gears
D) Bearing
Explanation:PAES 308:2001.
Question 29:The portion of the bevel gear tooth near the outer end.
A) Heel
B) Toe
C) Pitch apex
D) NOTA
Explanation: PAES 308:2001
Question 30: It is a power transmission device, which consists of one or more V-belts, mounted on two or more V-pulleys.
A) V-belt maneuver
B) V-belt steer
C) V-belt drive
D) V-belt scheme
Explanation: PAES 301:2000
Question 31: It refers to the ratio of the angular velocities of the pulleys making no allowance for slip and creep.
A) Angle ratio
B) Speed ratio
C) Swiftness ratio
D) Velocity ratio
Explanation: PAES 301:2000
Question 32: It is a flexible machine element used to transmit motion and power between two shafts, the cross section of which is shaped roughly like a regular trapezoid outlined by the base, sides, and top of the belt.
A)F-pulley
B) V-pulley
C) Flat belt
D) V-belt
Explanation: PAES 301:2000
Question 33: It is the linear speed of the belt at the level of the pulley pitch diameter.
A) Pulley velocity
B) Belt velocity
C) Belt speed
D) Pulley speed
Explanation: PAES 301:2000
Question 34: Refers to the diameter of the pulley, which coincides with the belt pitch.
A) Belt pitch diameter
B) Belt pulley diameter
C) Pulley pitch diameter
D) Pitch belt diameter
Explanation: PAES 301:2000
Question 35: It is the region in the belt that keeps the same length when the belt is bent perpendicularly to its base.
A) Belt diameter
B) Belt base
C) Belt length
D) Belt pitch
Explanation:PAES 301:2000.
Question 36: A wheel having flat or crowned face used to transmit motion and power by means of flat belts.
A) V belt pulley
B) Flat pulley
C) Flat belt pulley
D) NOTA
Explanation: PAES 302:2000
Question 37: The outside diameter of the pulley
A) Pulley diameter
B) Pulley exterior extent
C) Pulley breadth
D) Pulley span
Explanation: PAES 301:2000
Question 38: It is endless belt made with single ply high tensile cords. They are oil and heat resistant. Their thin dimension allows them to be in smaller pulleys and with high-speed drives.
A) Ply tensile belt
B) Rubber cord belts
C) Rubber belt
D) Nylon cord belts
Explanation: PAES 302:2002
Question 39: The diameter of a circle tangent to the curve (called the seating curve) at the bottom of the tooth gap
A) Bottom diameter
B) Upper diameter
C) Tooth diameter
D) Ply Board
Explanation: PAES 303:2000
Question 40: For a sprocket with an odd number of teeth, it is the distance from the bottom of the tooth gap to that of the nearest opposite tooth gap.
A) Space diameter
B) Gap diameter
C) Caliper diameter
D) Curve diameter
Explanation: PAES 303:2000
Question 41: It is used to prevent relative movement of rotating members and the shafts or spindles to which they are mounted.
A) Stopper
B) Lock
C) Key
D) Controller
Explanation: PAES 304:2000
Question 42: One classification of keys whose longitudinal sides are parallel with each other.
A) taper keys
B) parallel keys
C) woodruff keys
D) NOTA
Explanation: PAES 304 : 2000
Question 43: It is a cylindrical gear whose tooth traces are straight lines parallel to the axis. Generally, it transmits rotational motion and power between two axes
A) spur gear
B) tooth trace gear
C) drive gear
D) trace gear
Explanation: PAES 306:2000
Question 44: Classification of key with a tapered longitudinal section.
A) Parallel key
B) Woodruff key
C) Taper key
D) NOTA
Explanation: PAES 304:2000

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