On what principle does the braking system in the car work?
A. Frictional force
B. Gravitational force
C. Magnetic force
D. Electric force
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The hand brake of the automobile is usually
A. External contracting brake
B. Internal expanding brake
C. Disc brake
D. All of the above
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ABS function requires measurement of
A. Wheel rotation
B. Torque
C. Temperature
D. Camber
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The function of unloader valve is to
A. Relieve the pressure of air in the reservoir
B. Filter the air
C. Relieve the load on the compressor
D. None of the above
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Requirements of a good braking system is
A. Brake should have less wearing parts
B. Brakes should work equally good in all weathers
C. Both are correct
D. None of the above
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In the integral type of power brake, the diaphragm acts directly on the hydraulic piston in the
A. Master cylinder
B. Wheel cylinder
C. Multiplier unit
D. None of the above
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In vacuum brake, cylinder chamber consists of
A. Atmospheric valve
B. Vacuum valve
C. Both A and B
D. None of the above
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The brake shoes are curved to conform to the inner diameter of the
A. Tyre
B. Wheel
C. Pedal
D. Brake drum
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If a force of 10 units is applied to the master cylinder of an automotive brake system which uses wheel cylinder piston of 5 square units surface area, then the output force at wheels will be
A. 10 units
B. 15 units
C. 50 units
D. Cannot be estimated
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In hydraulic brake system, the movement of the piston in the master cylinder produces hydraulic pressure which causes movement of the
A. Brake shoe
B. Brake pedal
C. Brake cam
D. None of these
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In vacuum booster servo assisted hydraulic brake, vacuum is developed
A. In the inlet manifold
B. In the outlet manifold
C. In the crankcase
D. None of these
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The main function of a master cylinder is that it
A. Adjusts the extent of brake pedal play
B. Boosts the force applied to the brake pedal
C. Converts the brake pedal force into hydraulic pressure
D. Ensures that all the wheel brakes are supplied with the same amount of fluid pressure
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When the hydraulic brake pedal is pressed by the driver and feels 'spongy' it indicates that-
A. Brake shoe clearance is excessive
B. System contains air
C. System is in good condition
D. Brake fluid require change
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Bleeder valve is the valve fitted on wheel cylinders for forcing air out of the braking system
A. Correct
B. Incorrect
C. Both are correct
D. None of these
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When brakes are applied on a moving vehicle; the kinetic energy is converted to
A. Mechanical energy
B. Heat energy
C. Electrical energy
D. Potential energy
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What is the remedy of the cause fault 'Air in hydraulic system'?
A. Bleed the system
B. Adjust brake pedal
C. Use brake oil
D. All are correct
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If the brake efficiency is 70%, then the braking quality is said to be
A. Fair
B. Very good
C. Good
D. Poor
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What is the cause of the fault 'insufficient braking'?
A. Insufficient air in the system
B. Brake shoes worn out
C. Brakes require re-adjusting
D. All are correct
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The most effective braking system for a four wheeled vehicle will have
A. All wheels braking
B. Front wheel braking
C. Real wheels braking
D. Front wheels braking if the front wheel is the drive axle
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In disc brakes, pad-to-disc adjustment is provided by
A. Caliper
B. Piston
C. Piston seal
D. Bleed screw
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