Mechanic Recruitment Exam Question Paper with Answer pdf

The Question Paper with Answer in pdf/jpeg Text format of Mechanic Recruitment Exam conducted by Kerala PSc to appoint in Agriculture Development and Farmers Welfare Department is Published here

Question Paper Details

No. of Questions: 100

Maximum Marks: 100 Marks

No of Questions in Part 1- Total 50

No of Questions in Part 2- Total 50

Answers Availability: Yes Available

Question Paper Format: Pdf/ Jpeg

Question Paper Code: 3/2023/OL

Exam: Mechanic

Department:  Agriculture Development and Farmers Welfare

Date of Test 06-01-2023

Question1:-What is the working cycle of compression ignition engine?
A:-Otto Cycle
B:-Sterling Cycle
C:-Diesel Cycle
D:-Rankin Cycle
Correct Answer:- Option-C

Question2:-The portion below the piston pin boss is called
A:-Crown of the Piston
B:-Skirt of the Piston
C:-Land of the Piston
D:-Ring Section of the Piston
Correct Answer:- Option-B

Question3:-In a rear wheel drive vehicle if the rear wheels move up and down then
A:-the angle of drive changes
B:-the drive line changes length
C:-both (1) and (2)
D:-neither (1) nor (2)
Correct Answer:- Option-C

Question4:-Which part is not common between the old model Petrol and Diesel engines?
A:-Air cleaner
B:-Battery
C:-Exhaust Silencer
D:-Fuel injector
Correct Answer:- Option-D

Question5:-Which sensor is used to sense vibrations?
A:-Engine Knocking Sensor
B:-Air Vertex Sensor
C:-Hall Effect Sensor
D:-Vehicle Speed Sensor
Correct Answer:- Option-A

Question6:-A clutch is usually designed to transmit maximum torque which is
A:-Equal to the maximum engine torque
B:-150 percentage of the maximum engine torque
C:-75 percentage of the maximum engine torque
D:-None of the above
Correct Answer:- Option-B

Question7:-Which type of gear will not produce axial thrust while transmitting torque
A:-Spur gear
B:-Helical gear
C:-Worm gear
D:-Spur bevel gear
Correct Answer:- Option-A

Question8:-Clutch facings are usually attached to the plate by
A:-Steel Rivets
B:-Steel screws
C:-Aluminium screws
D:-Brass rivets
Correct Answer:- Option-D

Question9:-What will be cause by which noise comes from a gearbox in neutral position?
A:-Synchronizing unit stuck
B:-Synchronizer worn-out
C:-Bearing worn out or dry
D:-Defective gear shift mechanism
Correct Answer:- Option-C

Question10:-What is the load taken by a taper roller bearing?
A:-Radial Load
B:-Axial and Radial Load
C:-Thrust Load
D:-Non thrust Load
Correct Answer:- Option-B

Question11:-The efficiency of hydraulic braking system is
A:-40-50%
B:-50-60%
C:-60-70%
D:-About 90%
Correct Answer:- Option-D

Question12:-If proportioning valve is not working
A:-Front brakes may lock
B:-Rear brakes may lock
C:-Front brakes may drag
D:-Rear brakes may drag
Correct Answer:- Option-A

Question13:-What is the main cause for wear on one side of tyre?
A:-Over inflation
B:-Under inflation
C:-Improper camber
D:-Improper caster
Correct Answer:- Option-C

Question14:-Disc brakes self-adjust when the lining wear allows the piston to
A:-Contact the disc
B:-Slide outward through the seal
C:-Cause seal deflection
D:-Reposition the seal groove in the caliper
Correct Answer:- Option-B

Question15:-What causes ”Air suction” in pump of hydraulic power steering system?
A:-Noise
B:-Low pressure
C:-High fluid level
D:-Steering wheel play
Correct Answer:- Option-A
Question16:-What is the compression ratio of an engine, its clearance volume is 10 c.c. and
swept volume is 90 c.c?

A:-8 : 1
B:-9 : 1
C:-10 : 1
D:-11 : 1
Correct Answer:- Option-C
Question17:-In a six cylinder engine, the power impulse occurs after ‘x’ degrees of crank shaft
rotation. Where ‘x’ is
A:-360
B:-240
C:-120
D:-90
Correct Answer:- Option-C
Question18:-In a Diesel fuel injection pump, the effective pressure strokes of the plungers
are regulated by means of a
A:-Fuel pump
B:-Control rack
C:-Needle valve
D:-Cam shaft
Correct Answer:- Option-B

Question19:-A dish in the piston head is employed to
A:-Decrease piston weight
B:-Provide valve clearance
C:-Adjust piston displacement
D:-Control compression ratio
Correct Answer:- Option-D
Question20:-Which tool is used for removing the piston rings from a piston?
A:-Piston ring expander
B:-Piston ring compressor
C:-Piston ring lifter
D:-Piston ring squeezer
Correct Answer:- Option-A

Question21:-Valve overlap is the number of degrees of crankshaft rotation during which
A:-the values are moving from fully closed to the timing point
B:-both intake and exhaust valves are closed
C:-both intake and exhaust valves are open
D:-the valve float
Correct Answer:- Option-C
Question22:-What is the effect if thermostat valve is stuck in closed position?
A:-Engine gets over cooling
B:-Engine gets over heating
C:-Engine does not start
D:-Engine does not stop
Correct Answer:- Option-B
Question23:-What is the reason if oil pump does not suck the oil?
A:-Filter clogged
B:-Relief valve struck
C:-More backlash
D:-Less radial clearance
Correct Answer:- Option-C
Question24:-Percentage of fuel energy lost to the cylinder walls in an automobile
engine is approximately

A:-1 percent
B:-10 percent
C:-80 percent
D:-25 percent
Correct Answer:- Option-D
Question25:-The impeller type exhauster has
A:-One spindle
B:-Two spindle
C:-Three spindle
D:-No spindle
Correct Answer:- Option-A
Question26:-Which are the materials commonly used in the catalytic converter?
A:-Chromium and vanadium
B:-Zinc and molybdenum
C:-Asbestos and ceramics
D:-Palladium and platinum
Correct Answer:- Option-D
Question27:-The basic difference between the supercharger and the turbocharger is in
A:-the way they are driven
B:-the size of the unit
C:-the number of waste gates
D:-the pressure they produce
Correct Answer:- Option-A
Question28:-The fuel injection timing in a distributor type pump is controlled by
A:-changing plunger stroke
B:-changing speed of rotor
C:-rotating the cam ring
D:-changing the number of cams on the ring
Correct Answer:- Option-C

Question29:-Which action the spindle only move up and down in feed pump?
A:-Idling action
B:- Partial action
C:-Normal action
D:-Pumping action
Correct Answer:- Option-A
Question30:-The information provided by the Oxygen sensor to the feed back control system
is about the
A:-Air flow speed
B:-Air temperature
C:-Exhaust gas volume
D:-Air fuel ratio
Correct Answer:- Option-D
Question31:-What is the cause for tractor pulls to one side during normal driving?
A:-Wheels tracking
B:-Loose wheel bearing
C:-Friction in ball joint
D:-Uneven tyre pressure
Correct Answer:- Option-D
Question32:-Which type of synchromesh gearbox will produce torque more than three
times of other type?
A:-Multi and double cone

B:-Porsche type
C:-Baulk type
D:-Baulk ring type
Correct Answer:- Option-A
Question33:-Which is the manually operated seed drill?
A:-Cell wheel precision seeder
B:-Centrifugal seed drill
C:-Pneumatic seed drill
D:-Hand seed drill
Correct Answer:- Option-D
Question34:-In tractor bull gear is the component of
A:-Engine timing gear
B:-Gear box
C:-PTO
D:-Final drive
Correct Answer:- Option-D
Question35:-In tractors, the function of three-point linkage is to
A:-Balance the load
B:-Hitch the implement
C:-Lift the load
D:-Carry the load
Correct Answer:- Option-B
Question36:-In tractor ‘ram cylinder’ is the
A:-Brake cylinder
B:-Fluid cylinder
C:-Hydraulic cylinder
D:-PTO
Correct Answer:- Option-C
Question37:-As per ASAE standard, the diameter of the PTO shaft is
A:-34.9 cm with 6 splines
B:-3.49 cm with 6 splines
C:-34.9 cm with 21 splines
D:-3.49 cm with 4 splines
Correct Answer:- Option-B
Question38:-Which type of gear will produce clicking noise during teeth contact?
A:-Spur gear
B:-Worm gear
C:-Helical gear
D:-Bevel gear
Correct Answer:- Option-A

Question39:-What causes noisy gear box in neural position?
A:-Synchroniser worn out
B:-Bearing worn out or dry
C:-Synchronising unit struck
D:-Synchronizer defective
Correct Answer:- Option-B
Question40:-What is aspect ratio in the tyre structure?
A:-Percentage ratio of tyre height to rim width
B:-Ratio between tyre height to tyre diameter
C:-Percentage ratio of tyre height to tyre width

D:-Ratio between tyre width to rim width
Correct Answer:- Option-C
Question41:-Which part of tyre referred as crown?
A:-Thread radius
B:-Thread width
C:-Tyre width
D:-Rim width
Correct Answer:- Option-A
Question42:-What causes air suction in pump of hydraulic power steering system?
A:-High fluid level
B:-Low pressure
C:-Steering wheel ply
D:-Noise
Correct Answer:- Option-D
Question43:-What is the material constituent of semi-metallic brake lining?
A:-Aluminium oxide
B:-Carbon composite
C:-Carbon fibre
D:-Fine polished steel wool
Correct Answer:- Option-D
Question44:-What is the cause of low voltage output from alternator?
A:-Faulty regulator
B:-Worn out bearing
C:-Loose drive pulley
D:-Loose mounting
Correct Answer:- Option-A

Question45:-In power tiller which type of tilling method is used to wet-soft paddy field?
A:-Circular travel tilling method
B:-Continuous tilling method
C:-Alternate tilling method
D:-Return tilling method
Correct Answer:- Option-C
Question46:-Which ploughing method saves fuel and time?
A:-Gathering method
B:-Casting method
C:-Hiching method
D:-Mixed method
Correct Answer:- Option-D
Question47:-What is the purpose of cultivator?
A:-Deep cultivation
B:-Tilling the soil between row crops
C:-Primary tillage operation
D:-Secondary tillage operation
Correct Answer:- Option-B
Question48:-What is the use of harrows?
A:-After seed bed preparation
B:-Deep cultivation
C:-Penetrating hard ground
D:-Seed bed preparation before planting
Correct Answer:- Option-D

Question49:-Which type of agriculture implement used for incorporating straw and green manure
in the field?
A:-Subsoiler
B:-Cultivator
C:-Rotavator
D:-Harrow
Correct Answer:- Option-C
Question50:-What is the cause for abnormal clutch lining wear?
A:-Excessive pedal free play
B:-Dry release bearing
C:-Warped pressure plate
D:-Oil in the clutch lining
Correct Answer:- Option-C

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