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Kerala PSC Mechanic – Agriculture Development and Farmers Welfare Previous Question Paper – 166/2023/OL

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Post NameMechanic - Agriculture Development and Farmers Welfare
Question Paper Code166/2023/OL
Category Code449/2022
Date of Test12 December 2023
Exam TypeOnline Examination
Total Questions100
1
Which of the following is not the part of tractor?
Answer
D. Suspension
2
While starting of the tractor, the compressed air is given to
Answer
A. Head
3
The position of transfer case in power transmission system
Answer
B. Mounted in the back of the main transmission
4
Purpose of spring-loaded balls in the gear shifter mechanism
Answer
C. To hold selector shaft in locking position
5
Which of the following statement is/are correct about differential locking? i. Axle and the housing are forced to rotate as one unit ii. This action prevents bevel gear on the axle from turning iii. This action prevents in getting more speed from gear box
Answer
B. Only (i & ii)
6
Which of the following is/are the differential locks?
Answer
D. All of these
7
The differential ring gear is bolted to
Answer
A. Case flange
8
As per the ASAE and BIS standard for PTO specification, the shaft diameter is
Answer
A. 34.925 mm
9
The link chain of tractor serves
Answer
B. Restricting the sideways movement of the implement
10
Component used to adjust the different sized seeds in the fluted roller metering device
Answer
A. Spring loaded baffle plate
11
The size of the disc is given in terms of
Answer
A. Diameter and Thickness
12
What is the purpose of spring provided in the tyne of cultivator?
Answer
C. Prevent damage in case of obstacles
13
In disc harrows, notched discs are used when the field having
Answer
C. Soils with heavy crop residue or grass
14
When the clutch pedal presses, hydraulic fluid passes through the check valve and it reaches to
Answer
B. Slave cylinder
15
In a single plate clutch, clutch cover is mounted by a set of screws on the
Answer
C. Fly wheel
16
A clutch locking drive gear is fixed
Answer
A. On the front differential drive shaft
17
In wheeled tractors, the speed ratios provide for land speeds are in the range
Answer
D. 4.2 to 9.5 m/sec
18
Which of the following statement is/are incorrect about wheels? (i) Able to withstand the driving and braking torque, and support the weight of the vehicle (ii) Statistically and dynamically unbalanced (iii) Able to adsorb road shocks
Answer
C. Only (ii)
19
In the cross ply type of tyre, alternate plys are provided
Answer
C. Opposite diagonal directions
20
NHTSA stands for
Answer
B. National Highway Traffic Safety Administration
21
When a tire has a rating P215/65R15 89H, the number 65 represents
Answer
D. Aspect ratio
22
Which electrolyte is used in maintenance free lead acid batteries?
Answer
B. Gelled electrolyte
23
What is the name of the process to maintain the recommended level of electrolyte in lead acid battery cell
Answer
B. Topping up
24
What is the need of solenoid switch in the tractor?
Answer
C. Both (1) and (2)
25
The purpose of anti-drift spring in the starting motor
Answer
A. To prevent the pinion from striking the flywheel
26
Radial engines are used in?
Answer
A. Aeroplanes
27
Engines having more than one cylinder is called?
Answer
B. Multi cylinder
28
Steam engines are known as?
Answer
B. E.C. Engines
29
The total distance travelled by a vehicle is indicated by?
Answer
C. Odometer
30
Pistons of modern IC engines are made by?
Answer
B. Aluminium alloy
31
The perpendicular distance between Crank pin and main journals of a crank shaft is called
Answer
A. Crank Throw
32
Front end of the Engine Crank shaft is connected with?
Answer
D. Vibration damper
33
Lower compression ratio of diesel engine will cause?
Answer
B. Mis firing
34
The petrol engine has the compression ratio of?
Answer
C. 08 to 12
35
Cam shaft belt drive mechanism is used in the engines of?
Answer
A. Over head cam
36
The ability of engine oil which is used for the lubrication purpose is
Answer
C. Viscosity
37
Radiator core of I.C. engine cooling system are made with?
Answer
A. Brass/Copper
38
Which lubrication system is equipped with Scavenge pump?
Answer
B. Dry sump system
39
Which part of the engine cooling system which maintains running temperature?
Answer
D. Thermostat valve
40
Exhaust manifolds of the I.C. engines are made with?
Answer
C. Cast iron
41
Heavy duty Diesel engines are equipped with the air cleaner of?
Answer
B. Oil bath type
42
The function of turbocharger in I.C. engines is to improve?
Answer
D. Volumetric efficiency
43
Which of the fuel feed system does not use fuel feed pump?
Answer
A. Gravity feed
44
Average injecting pressure of diesel in the diesel engines are?
Answer
C. 215 kg/sq.cm
45
The process of adjusting fuel delivery at different speed and load conditions of engine in F.I. pump is?
Answer
B. Caliberation
46
Energy released by the complete combustion of unit mass fuel is called
Answer
D. Calorific value
47
The device in the diesel fuel feed system which convert low pressure fuel to high pressure to inject fuel is
Answer
B. F.I. pump
48
Blow by gases in the I.C. engines are recirculated by
Answer
C. E.G.R. System
49
Which part in the exhaust system reduces air pollution of Petrol engines?
Answer
A. Catalytic converter
50
Chemical content in the engine exhaust system which cause air pollution by burnt fuel particles is
Answer
B. Carbon monoxide
51
Which type of engine arrangement is used in Maruti 800 car?
Answer
A. Front Transverse type
52
Pick one example for station wagon body style vehicle?
Answer
D. Toyota Innova
53
Which of the following statement is correct regarding differential action?
Answer
B. When vehicle makes a turn, star gears rotate on their own axis
54
Which component transmission system transmit power at right angle?
Answer
D. Final drive
55
The component of torque converter which gives impeller an added torque?
Answer
A. Stator
56
Which of the following is not a function of steering system?
Answer
B. To provide permanent gear reduction in drive line
57
Which of the following steering system doesn't have drop arm?
Answer
D. Rack and pinion steering gearbox
58
The steering column inclination to vertical in commercial vehicle is generally about?
Answer
A. 20°
59
Which wheel geometry factor helps in self-centering of wheels after negotiating a turn?
Answer
D. Kingpin inclination
60
When did the vehicle will be in 'Dog tracking'?
Answer
C. Thrust angle is not zero
61
For achieving good driving safety and comfort
Answer
B. Unsprung mass should be small as possible
62
Which of the suspension component absorb vibrations of high amplitude and lower frequency?
Answer
C. Suspension spring
63
What is the arrangement of inner and outer tube in telescopic shock absorber?
Answer
D. Concentric
64
What is the disadvantages of independent suspension system?
Answer
A. High maintenance cost
65
Which of the following is correct statement regarding rigid axle suspension system?
Answer
D. Vibration damping is less effective
66
What is the principle of hydraulic brake system?
Answer
B. Pascal's law
67
Which type of brake system can be considered as Energy Recovery Mechanism?
Answer
B. Regenerative brake system
68
Which type of master cylinder having non-return valve provided on piston head?
Answer
A. Centre feed master cylinder
69
Which type of wheel cylinder makes different pressure on each brake shoes?
Answer
D. Double piston with step bore
70
How to measure vehicle speed information in ABS?
Answer
B. With some logic using wheel speed sensor information
71
What is the function of ignition coil?
Answer
B. Step up low voltage to high voltage
72
What happens when the spark plug runs too cold?
Answer
A. high voltage surge will leak across sooty deposit formation
73
What is dwell angle?
Answer
C. Angle of cam rotation at which CB point remain closed
74
How many spark plugs are ignited at the same time in Distributor type electronic ignition system?
Answer
A. 1
75
What does the 3rd digit of scan tool letter code indicates?
Answer
D. The system in trouble code reference
76
PPE5-stands for
Answer
B. Eyes and Face protection
77
ABC of first aid stands for
Answer
B. Airway, breathing, circulation
78
Collisions causes
Answer
A. Roads, vehicles, drivers
79
Class B fire stands for
Answer
C. Flammable liquid, liquitable solids
80
The legs of inside calipers are
Answer
A. Bend to outwards
81
The specification of files are classified as
Answer
B. length, shape, cut and grade
82
The part of a combination set which is used to find the center of a rod is
Answer
C. Center head
83
The least count of vernier bevel protractor is
Answer
B. 5 minutes
84
Portable fire proof canvas screens are used to
Answer
B. Protect the persons who work near the welding area
85
Flame temperature of oxy-acetylene gas flame
Answer
C. 3100°C to 3300°C
86
The angle of acme thread is
Answer
B. 29°
87
Studs are used to
Answer
B. Connect machine parts to each other without obstruction
88
The angle of a drill is
Answer
C. 118°
89
The property of wire drawing is known as
Answer
D. Ductility
90
The purpose of tempering the steel
Answer
C. To relieve internal stresses
91
The ore of aluminium is
Answer
B. Bauxite
92
The purpose of holes provided on the sine bar is
Answer
A. To reduce the weight
93
Feeler gauge is used for
Answer
A. To measure the distance between two mating parts
94
Scrapers are used to remove
Answer
Question Cancelled
95
Cap Nuts are used to
Answer
C. Protect bolt end threads
96
The localized movement of belt with a direct result of the elastic strength is known as
Answer
B. Creep
97
The gear which transmit motion when the shafts are at right angles to each other
Answer
C. Mitre gear
98
Keep the belt centralized even if there is any slight tendency to run off is known as
Answer
C. Crowning
99
The advantages of hydraulics are
Answer
C. Quick reversal is possible
100
What reasons, air is used as a working substance is pneumatics?
Answer
B. Large amounts of energy can be stored in a limited space

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