Motor Vehicle Inspector • 2025 • Paper-IV
In splash lubrication, oil is:
A)
Pumped under high pressure
B)
Thrown as mist by engine parts
C)
Sprayed by compressed air
D)
Poured manually
Option B is correct: Thrown as mist by engine parts.
Motor Vehicle Inspector • 2025 • Paper-IV
The pressure lubrication system uses which of the following to circulate oil?
A)
Manual pump
B)
Centrifugal fan
C)
Oil pump
D)
Splash plate
Option C is correct: Oil pump.
Motor Vehicle Inspector • 2025 • Paper-IV
Ability of body structure to absorb crash energy is:
A)
Aerodynamic resistance
B)
Impact strength
C)
Crashworthiness
D)
Elastic rebound
Option C is correct: Crashworthiness.
Motor Vehicle Inspector • 2025 • Paper-IV
Air cooling is mostly used in:
A)
Heavy-duty trucks
B)
Motorcycles and scooters
C)
Large industrial engines
D)
Marine engines
Option B is correct: Motorcycles and scooters.
Motor Vehicle Inspector • 2025 • Paper-IV
The main requirement of road wheels is to withstand:
A)
Engine torque only
B)
Vehicle load only
C)
Both vehicle load and road shocks
D)
Only braking force
Option C is correct: Both vehicle load and road shocks.
Motor Vehicle Inspector • 2025 • Paper-IV
When the throttle is suddenly opened, the carburettor:
A)
Supplies less fuel
B)
Closes the choke
C)
Delays ignition
D)
Delivers an extra burst of fuel via the accelerator pump
Option D is correct: Delivers an extra burst of fuel via the accelerator pump.
Motor Vehicle Inspector • 2025 • Paper-IV
Which of the following is the most commonly used battery in automobiles?
A)
Nickel-cadmium battery
B)
Lead-acid battery
C)
Lithium-ion battery
D)
Zinc-carbon battery
Option B is correct: Lead-acid battery.
Motor Vehicle Inspector • 2025 • Paper-IV
A wheel must be dynamically balanced to:
A)
Reduce engine vibrations
B)
Ensure proper gear shifting
C)
Prevent wobbling at high speeds
D)
Increase wheel weight
Option C is correct: Prevent wobbling at high speeds.
Motor Vehicle Inspector • 2025 • Paper-IV
Air hydraulic brakes combine features of:
A)
Hydraulic and electric systems
B)
Hydraulic and cable systems
C)
Air and hydraulic systems
D)
Disc and drum brakes
Option C is correct: Air and hydraulic systems.
Motor Vehicle Inspector • 2025 • Paper-IV
In disc brakes, the braking force is applied by:
A)
Brake pads pressing on a rotating disc
B)
Brake shoes pressing on a drum
C)
Hydraulic oil pressing on a belt
D)
Springs compressing a flywheel
Option A is correct: Brake pads pressing on a rotating disc.
Motor Vehicle Inspector • 2025 • Paper-IV
Lubrication also helps in:
A)
Sealing combustion gases
B)
Increasing octane number
C)
Boosting tyre grip
D)
Reducing crankshaft length
Option A is correct: Sealing combustion gases.
Motor Vehicle Inspector • 2025 • Paper-IV
Main function of a chassis frame:
A)
Provide shape to the body
B)
Support and carry load of engine, passengers, goods
C)
Protect electrical system
D)
Control lubricant flow
Option B is correct: Support and carry load of engine, passengers, goods.
Motor Vehicle Inspector • 2025 • Paper-IV
Thermostat valve starts opening at about:
A)
50 °C
B)
65 °C
C)
80 °C
D)
95 °C
Option C is correct: 80 °C.
Motor Vehicle Inspector • 2025 • Paper-IV
The capacity of a battery is usually expressed in:
A)
Watts
B)
Volts
C)
Ampere-hours (Ah)
D)
Horsepower
Option C is correct: Ampere-hours (Ah).
Motor Vehicle Inspector • 2025 • Paper-IV
The effectiveness of a brake depends largely on:
A)
Frictional contact area and coefficient
B)
Cooling system capacity
C)
Air–fuel mixture strength
D)
Type of suspension used
Option A is correct: Frictional contact area and coefficient.
Motor Vehicle Inspector • 2025 • Paper-IV
Usual type of starter motor in automobiles is:
A)
Shunt wound
B)
Series wound
C)
Compound wound
D)
Separately excited
Option B is correct: Series wound.
Motor Vehicle Inspector • 2025 • Paper-IV
A single jet carburettor tends to supply richer mixture during:
A)
Starting
B)
Idling
C)
Low speed running
D)
High speed running
Option A is correct: Starting.
Motor Vehicle Inspector • 2025 • Paper-IV
Octane rating is used to measure:
A)
The efficiency of diesel engines
B)
The resistance to knocking in petrol engines
C)
The power output of an engine
D)
The density of the fuel
Option B is correct: The resistance to knocking in petrol engines.
Motor Vehicle Inspector • 2025 • Paper-IV
Electrolyte in a lead acid battery consists of:
A)
35% sulphuric acid & 65% water
B)
65% sulphuric acid & 35% water
C)
65% nitric acid & 35% water
D)
35% nitric acid & 65% water
Option A is correct: 35% sulphuric acid & 65% water.
Motor Vehicle Inspector • 2025 • Paper-IV
Which of the following does not affect the carburetion process?
A)
Temperature of incoming air
B)
Time available for mixture formation
C)
Quality of fuel
D)
Size of radiator
Option D is correct: Size of radiator.
Motor Vehicle Inspector • 2025 • Paper-IV
Which type of frame is mainly used in modern passenger cars?
A)
Ladder frame
B)
Tubular frame
C)
Integral frame (Monocoque)
D)
Box frame
Option C is correct: Integral frame (Monocoque).
Motor Vehicle Inspector • 2025 • Paper-IV
Which component stores and circulates coolant in the engine?
A)
Radiator
B)
Water pump
C)
Fan
D)
Cylinder head
Option B is correct: Water pump.
Motor Vehicle Inspector • 2025 • Paper-IV
Pour point indicates:
A)
Lowest temp oil flows
B)
Temp loses colour
C)
Max operating temp
D)
Flash temp
Option A is correct: Lowest temp oil flows.
Motor Vehicle Inspector • 2025 • Paper-IV
In a drum brake, the brake shoes are:
A)
Stationary inside a rotating drum
B)
Rotating with the wheel inside a stationary drum
C)
Expanding outwards against a rotating drum’s inner surface
D)
Expanding inwards onto a rotating drum’s outer surface
Option C is correct: Expanding outwards against a rotating drum’s inner surface.
Motor Vehicle Inspector • 2025 • Paper-IV
Water-cooled engines are preferred in:
A)
Low-speed motorcycles
B)
High-performance or heavy-duty vehicles
C)
Pedal bicycles
D)
Manual transmission systems
Option B is correct: High-performance or heavy-duty vehicles.
