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Automobile Engineering Practice Test: Braking System
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Avg score: 70% Most missed: “What is the braking torque at leading shoe if resultant frictional force acts at…”
A car's braking system is an important part that allows the driver to slow down or stop the vehicle. It also prevents a stationary vehicle from moving.  Here are some types of braking systems: Disc brakes: Found on most modern cars. Disc brakes are usually used on the front wheels of vehicles. Drum brakes: Similar to disc brakes, but typically used on the rear wheels. Anti-lock brakes (ABS): Also known as anti-lock braking systems, ABS work by applying and releasing pressure to any wheel that decelerates too quickly. This allows maximum stopping force to be applied without the brakes... Show more
Automobile Engineering Practice Test: Braking System
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10 Questions

1. If the car is moving on the level road at a speed of 50 km/h has a wheelbase 4 m, a distance of C.G. from ground 800 mm and distance from rear wheels is 1.2 m. Coefficient of friction is 0.8. What is the retardation if the brakes are applied to the front wheels?
2. If the car is moving on the level road at a speed of 50 km/h has a wheelbase 4 m, a distance of C.G. from ground 800 mm and distance from rear wheels is 1.2 m. Coefficient of friction is 0.8. What is the retardation if the brakes are applied to all wheels?
3. What is the braking torque at leading shoe if resultant frictional force acts at a distance of 250 mm from the brake drum center, coefficient of friction between the shoe and the drum as 0.5, the free ends of the two shoes are pushed apart with a force of 300 N which is acting at a distance of 320 mm from anchor, and two shoes are anchored together 170 mm away from the brake drum center?
4. The car is moving up on the 12o inclined road with horizontal at 36 km/h which is having wheelbase 1.4 m. The C.G. of the car is 0.9 m above the road. The coefficient of friction is 0.7. What is the retardation of the car if the brakes are applied to all the four wheels?
5. On what principle does the braking system in the car work?
6. In a disc brake, which component provides the pad-to-disc adjustment?
7. The car is moving down on the 14° inclined road with horizontal at 36 km/h which is having wheelbase 1.4 m. The C.G. of the car is 0.9 m above the road. The coefficient of friction is 0.75. What is the retardation of the car if the brakes are applied to all the four wheels?
8. If the car is moving on the level road at a speed of 50 km/h has a wheelbase 3 m, a distance of C.G. from ground 700 mm and distance from rear wheels is 1.1 m. Coefficient of friction is 0.7. What is the retardation if the brakes are applied to the rear wheels?
9. Generally which brakes are on the front wheels?
10. The metering valve is used to proportion the braking effect between the front and the rear axle.