Motor Vehicle Inspector • 2025 • Paper-IV
In a drum brake system, the brake shoes press against:
A)
Brake pads
B)
Brake disc
C)
Inner surface of the drum
D)
Outer surface of the drum
Option C is correct: Inner surface of the drum.
Motor Vehicle Inspector • 2025 • Paper-IV
Which part directs airflow over the fins in some air-cooled engines?
A)
Fan
B)
Radiator
C)
Oil cooler
D)
Thermostat
Option A is correct: Fan.
Motor Vehicle Inspector • 2025 • Paper-IV
The primary component that increases surface area for heat dissipation in an air-cooled engine is:
A)
Radiator
B)
Thermostat
C)
Fins
D)
Pump
Option C is correct: Fins.
Motor Vehicle Inspector • 2025 • Paper-IV
The main advantage of wire spoked wheels is:
A)
High weight
B)
Flexibility and shock absorption
C)
Poor appearance
D)
High manufacturing cost
Option B is correct: Flexibility and shock absorption.
Motor Vehicle Inspector • 2025 • Paper-IV
The best hydrocarbons from detonation viewpoint are:
A)
Paraffins
B)
Olefins
C)
Naphthenes
D)
Aromatics
Option D is correct: Aromatics.
Motor Vehicle Inspector • 2025 • Paper-IV
In an air brake system, compressed air is stored in:
A)
Brake shoes
B)
Air reservoir
C)
Compressor cylinder
D)
Vacuum chamber
Option B is correct: Air reservoir.
Motor Vehicle Inspector • 2025 • Paper-IV
The main advantage of a split rim is:
A)
Lower cost
B)
Better appearance
C)
Easier mounting and demounting of tires
D)
More color options
Option C is correct: Easier mounting and demounting of tires.
Motor Vehicle Inspector • 2025 • Paper-IV
Most common water pump type is:
A)
Vane type
B)
Centrifugal type
C)
Reciprocating type
D)
Gear type
Option B is correct: Centrifugal type.
Motor Vehicle Inspector • 2025 • Paper-IV
The tyre specification ‘6.00 – 16’ denotes:
A)
Tyre section width and rim diameter in inches
B)
Tyre circumference and rim width in inches
C)
Ply rating and load index
D)
Tyre height and rim height in inches
Option A is correct: Tyre section width and rim diameter in inches.
Motor Vehicle Inspector • 2025 • Paper-IV
Which of the following is not a type of chassis frame?
A)
Ladder frame
B)
Tubular frame
C)
Monocoque frame
D)
Flywheel frame
Option D is correct: Flywheel frame.
Motor Vehicle Inspector • 2025 • Paper-IV
Firewall in an automobile separates:
A)
Engine compartment from passenger compartment
B)
Passenger compartment from luggage compartment
C)
Engine compartment from fuel tank
D)
Roof from body side
Option A is correct: Engine compartment from passenger compartment.
Motor Vehicle Inspector • 2025 • Paper-IV
The main function of a cooling system in an IC engine is to
A)
Increase power output
B)
Prevent engine overheating
C)
Supply fuel to the engine
D)
Clean engine parts
Option B is correct: Prevent engine overheating.
Motor Vehicle Inspector • 2025 • Paper-IV
Commonest lubrication system:
A)
Splash
B)
Petroil
C)
Pressure feed
D)
Mist feed
Option C is correct: Pressure feed.
Motor Vehicle Inspector • 2025 • Paper-IV
Bonnet of a car is usually hinged at:
A)
Rear or front depending on design
B)
Only rear side
C)
Only front side
D)
Left hand side
Option A is correct: Rear or front depending on design.
Motor Vehicle Inspector • 2025 • Paper-IV
What is the main purpose of a braking system in a vehicle?
A)
To increase vehicle speed
B)
To provide better fuel economy
C)
To slow down or stop the vehicle
D)
To increase engine power
Option C is correct: To slow down or stop the vehicle.
Motor Vehicle Inspector • 2025 • Paper-IV
The three main components of the primary ignition circuit are:
A)
Contact breaker, ignition switch, condenser
B)
Contact breaker, coil, battery
C)
Contact breaker, distributor, spark plugs
D)
Contact breaker, ignition coil, condenser
Option B is correct: Contact breaker, coil, battery.
Motor Vehicle Inspector • 2025 • Paper-IV
What is the principle of battery charging?
A)
Converting AC to magnetic energy
B)
Reversing the chemical reaction by applying an external current
C)
Producing heat using electricity
D)
Storing fuel in battery
Option B is correct: Reversing the chemical reaction by applying an external current.
Motor Vehicle Inspector • 2025 • Paper-IV
A good chassis frame must be:
A)
Heavy and flexible
B)
Rigid and strong
C)
Soft and light
D)
Flexible and low strength
Option B is correct: Rigid and strong.
Motor Vehicle Inspector • 2025 • Paper-IV
Which of the following is a common method of battery charging in vehicles?
A)
Manual charging
B)
Induction charging
C)
Constant voltage charging
D)
Steam charging
Option C is correct: Constant voltage charging.
Motor Vehicle Inspector • 2025 • Paper-IV
A high viscosity oil is:
A)
Very thin and flows easily
B)
Highly corrosive
C)
Thick and flows slowly
D)
Very volatile
Option C is correct: Thick and flows slowly.
Motor Vehicle Inspector • 2025 • Paper-IV
An ideal brake should have:
A)
Low braking force
B)
Slow response time
C)
High wear rate
D)
High braking efficiency and quick response
Option D is correct: High braking efficiency and quick response.
Motor Vehicle Inspector • 2025 • Paper-IV
Which component is most directly lubricated to reduce friction between piston and cylinder?
A)
Cylinder head
B)
Crankshaft
C)
Piston rings
D)
Valve spring
Option C is correct: Piston rings.
Motor Vehicle Inspector • 2025 • Paper-IV
Which of the following is NOT a part of a disc brake system?
A)
Rotor (disc)
B)
Caliper
C)
Brake shoe
D)
Brake
Option C is correct: Brake shoe.
Motor Vehicle Inspector • 2025 • Paper-IV
Which component in hydraulic brakes converts foot pressure into hydraulic pressure?
A)
Wheel cylinder
B)
Master cylinder
C)
Brake pad
D)
Drum
Option B is correct: Master cylinder.
Motor Vehicle Inspector • 2025 • Paper-IV
The floor of a passenger car is generally made from:
A)
Wood
B)
Mild steel sheet
C)
Glass fibre
D)
Cast aluminium
Option B is correct: Mild steel sheet.
