| Post Name | Junior Instructor (Mechanic Motor Vehicle) - Industrial Training |
|---|---|
| Question Paper Code | 195/2023 |
| Category Code | 008/2022 |
| Date of Test | 7 October 2023 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The most common cause of accident in the workshop is :
Answer
C. Failure to follow instructions
2
What is the point angle of centre punch?
Answer
D. 90°
3
What does the ‘A’ stand for in ABC of first aid?
Answer
B. Airway
4
What is the pitch distance of a metric micrometer spindle thread?
Answer
A. 0.5 mm
5
The purpose of feeler gauge is :
Answer
B. Checking clearances between mating surfaces
6
The hand tool used for making internal thread :
Answer
A. Tap
7
Which of the following is not a part of Drilling machine?
Answer
C. Mandrel
8
Which component is used to prevent leakage between cylinder and cylinder head?
Answer
D. Gasket
A 3
9
The thread angle of an ISO metric thread is :
Answer
C. 60°
10
For cutting soft materials, the hacksaw blade should have :
Answer
A. Coarse pitch
11
The electrolyte used in the lead-acid storage batteries is a solution of :
Answer
C. Sulphuric acid
12
Which test is used to determine whether the battery plates are defective or not?
Answer
D. Cadmium test
13
Which of the following is provided to charge the battery constantly?
Answer
B. Generator
14
A starter solenoid consists of two coils. These are called :
Answer
C. Pull-in and hold-in
15
In an alternator the magnetic field produced in the :
Answer
A. Rotor
16
Which one of the following can be used to convert A.C to D.C?
Answer
A. Rectifier
17
In a starter motor, the field windings are wound around :
Answer
D. Pole shoes
18
Any short-circuit in armature windings may be tested with
Answer
B. Growler
19
For aiming the head lights, the distance between the head light and screen should be :
Answer
C. 7.6 m
20
The lamps are protected from overloading by :
Answer
A. Fuse
21
Distance travelled by the piston in moving from Top dead centre to Bottom dead centre is
called :
Answer
A. Stroke
22
The efficiency of an Otto cycle is increased by increasing :
Answer
C. Compression ratio
23
For the condition of maximum pressure and heat supplied :
Answer
B. Diesel cycle is more efficient than Otto cycle
24
The firing order in case of six cylinder in-line engine is usually :
Answer
D. 1-5-3-6-2-4
25
In a four stroke cycle diesel engine the inlet valve opens :
Answer
A. 10° – 20° before TDC
26
A four stroke petrol engine theoretically works on :
Answer
C. Otto cycle
27
The compression ratio for Diesel engine varies from :
Answer
D. 15 to 20
A 5 195/2023
28
What is the piston speed of an engine when it runs at N rpm and its length of stroke is L?
Answer
C. 2 LN
29
Stroke length of an IC Engine equals :
Answer
C. Twice the crank radius
30
The cross-sectional area of one cylinder of an engine multiplied by its stroke length is called :
Answer
D. Swept volume
31
A ————— is used in the piston head to control compression ratio and detonation.
Answer
B. Dish
32
The cast iron is mainly used material for cylinder block because of :
Answer
D. All of the above
33
The purpose of the gear teeth around the flywheel is :
Answer
A. To engage with starter motor
34
The crankshaft carries a vibration damper in order to control the ————— vibration caused
by the power impulses.
Answer
C. Torsional vibration
35
The distance between the axis of the main journal and the crankpin centre lines is exactly
one half of the engine stroke and is called :
Answer
D. Crank throw
36
The ————— is used to measure bearing clearance.
Answer
C. plasti gauge
37
Technician A says that the valve rotates slightly as it opens. Technician B says that the valve
rotates slightly as it closes. Who is right?
Answer
C. Both A and B
38
Camshaft in an engine is always mounted :
Answer
C. Parallel to the crankshaft
39
————— is a type of cylinder head, the intake and exhaust port passages open on opposite
sides of the engine.
Answer
B. Cross flow
40
Which tool is used to remove the ridge at the cylinder top?
Answer
A. ridge reamer
41
In ————— type of radiator cores, the coolant flows through tubes and air passes around
them.
Answer
A. Tubular type
42
In modern engines instead of an overflow pipe, ————— is connected with the radiator, it
receives the excess coolant as the engine temperature increases.
Answer
B. Expansion reservoir
43
Commonly used corrosion - inhibitors in a cooling system are :
Answer
A. Silicates and Chromates
44
The ————— lubrication system is suitable for the vehicle may have to work in an inclined
position.
Answer
D. Dry sump Lubrication System
45
Semi-solid lubricant is :
Answer
D. Grease
A 7 195/2023
46
The oil pump used in a lubrication system :
Answer
D. All of these
47
The Positive Crankcase Ventilation (PCV) the system is that it :
Answer
C. returns blow-by gases from the crankcase to the intake system
48
The bellow type thermostat, bellows filled with ————— material.
Answer
B. Acetone
49
Water Circulation in a thermosyphon cooling system is caused by :
Answer
B. The difference in densities of the water
50
Which of the following is not a positive displacement pump?
Answer
C. Centrifugal pump
51
In Spark Ignition System the two fuel systems are used they are :
Answer
Question Cancelled
52
In electric fuel pump all the following are true except :
Answer
B. It mounts on the cylinder block or head
53
Service man A says valve on cap of the fuel tank is to prevent pressure build up in the tank.
Service man B says same has to use to prevent the vacuum build up in the tank. Who is right?
Answer
C. Both A and B
54
The dual exhaust system has a crossover pipe to :
Answer
D. All the above
55
The lowest possible back pressure in the exhaust system is produced by :
Answer
D. Mufflers
56
To relieve fuel pressure is to remove the fuel pump fuse and the :
Answer
C. run the engine until it stalls
57
When replacing a fuel injector, O rings are coated with :
Answer
Question Cancelled
58
Speed of the engine at the time of engine rpm drop test should :
Answer
A. Drop 50 rpm or more
59
If there is no flow in EGR the causes found are :
Answer
D. All the above
60
Trouble indicated in Catalytic converter by all the following except :
Answer
Question Cancelled
61
For Rotating parts of the clutch the inertia should be :
Answer
B. Minimum
62
For the maximum life of clutch facing the rubbing speed at the time of engagement while the
pressure intensity are not exceed to :
Answer
A. 30 ms to 100 Kpa
63
Major cause for the clutch spin may be :
Answer
D. All the above
64
Pulsation of the clutch pedal caused by :
Answer
A. Misalignment of engine and transmission
65
When can we notice the clutch dragging?
Answer
B. While shifting gears
66
The transaxle
Answer
B. An input shaft with two pinion gears
67
In automatic transmission, One end of the band is anchored to the transmission case and
other end is linked to :
Answer
B. A servo
68
The plunger in the shift solenoid in an electronic shift transmission :
Answer
D. Rise to open a fluid passage when turned ON
69
At normal line pressure the vehicle moves in reverse but not in the forward gear, due to :
Answer
Question Cancelled
70
The clutch should be able to transmit maximum torque of the engine under all condition, it is
usually design to transmit the maximum engine torque of :
Answer
C. 125 to 150%
71
Which change can be noticed by an Automatic level control?
Answer
A. Load in the rear of the car
72
In lower control arm steering knuckle is attached by
Answer
D. ball joint
73
The effect of rear end torque occurs :
Answer
B. During acceleration
74
In hydraulic system air can enter because of :
Answer
D. low fluid level in master cylinder
75
For the front and rear tires inflation pressures recommendation on the car is listed in the :
Answer
B. Tire information label
76
Unsprung weight is reduces by :
Answer
C. Aluminum
77
What is the remedy for excessive radial run out?
Answer
D. Reposition the tire on the wheel
78
Rapid wear with feathered edge on the tread due to :
Answer
D. Incorrect wheel alignment
79
Sway bar connects between two lower control arms, when the vehicle moves around the curve
the body, :
Answer
B. Leans outward
80
The major cause for the shimmy effect is :
Answer
A. Wearing out of hub bearing
81
The Davis steering gear mechanism has :
Answer
D. more number of sliding pairs resulting in high friction
82
In recirculating ball type steering gear box the backlash between the sector and the external
teeth on the nut is adjusted by :
Answer
A. turning a screw till the required adjustment is effected
83
The purpose of positive castor on wheels is to :
Answer
B. aids the centrifugal force and causes rolling out of the vehicle
84
The steering road wheel stub axles must be able to twist through a maximum steering angle
of —————— either side of straight ahead position.
Answer
B. 40°
85
Extreme shaking in a steering can be called as :
Answer
Question Cancelled
86
The axle which helps to maintain wheel alignment and handles side thrust and driving
torque is called as :
Answer
C. three-quarter floating axle
87
In Hotchkiss drive, the rear end torque is absorbed by :
Answer
B. rear spring
88
The drive shafts are connected to the differential and wheel hubs through universal joints
because the universal joints :
Answer
B. compensate for variations in the relative positions of the differential and the
wheels which result from bumpy road surfaces or other similar driving conditions
89
Which of the following statements are correct for all-wheel drive systems?
(i) suitable for SUVs and crossovers driven on varying road conditions
(ii) suitable for off-road SUVs with very low traction
(iii) sends power to the front and rear wheels all the time
Answer
C. only (i) and (iii)
90
Sound occured due to the splines on the axle shafts being worn out is called as :
Answer
B. Knocking noise
91
Brake torque on the front wheels is absorbed by the :
Answer
A. knuckle and suspension control arm
92
The shoes that provide self-energizing or servo action are known as :
Answer
B. Leading shoes
93
During the application of disc brakes, the reduction of speed is :
Answer
C. directly proportional to the hydraulic pressure acting on each piston
94
The common cause of the car pulling to one side under braking is :
(i) a fault with the pad or caliper
(ii) the brake on one side is grabbing
(iii) the brake fluid pressure is low
Answer
A. Option (i) and (ii)
95
The brake fluid needs to be replaced depends on a number of factors, such as :
(i) wear and damaged parts of the brake
(ii) driving habits
(iii) environmental variables like heat and humidity
Answer
D. All the above options (i), (ii) and (iii)
96
The functions of receiver-drier are :
(i) to filter out any dirt from the refrigerant
(ii) to absorb moisture if present in the refrigerant
(iii) to trap any refrigerant vapour that did not condense in the condenser
Answer
D. All the above options (i), (ii) and (iii)
97
————— compressor provides the greatest cooling capacity per kg of compressor weight.
Answer
A. York’s van rotary compressor
98
In heating system little or no heat may be due to :
(i) air leaks around blower case or coolant leaks around heater core
(ii) inefficient air circulation
(iii) presence of air in heater core
Answer
B. Option (ii) and (iii)
99
In AC system the air coming from the vents is not cool enough, the causes are :
(i) The compressor belt is slipping
(ii) Condenser is clogged with debris
(iii) Receiver/drier is plugged
Answer
D. All the above options (i), (ii) and (iii)
100
The thermostatic expansion value meters the required amount of liquid refrigerant into the
evaporator for proper cooling action, which varies with the evaporator heat loads is called as :
Answer
Question Cancelled
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