17-04-2014, 04:50 PM
BRAKING SYSTEM Very Short Answer Type Questions
BRAKING SYSTEM.docx (Size: 262.66 KB / Downloads: 17)
Q. 1. What is the purpose of brake shoe adjustor?
Ans. The purpose of adjustor is to compensate the wear of brake leather due to regular use of vehicle.
Q. 2. Define servo Brakes?
Ans. Mechanism which assist the driver’s effort for applying brakes is called servo mechanism. Servo means self energization. Servo Brakes generally used when vehicle load is above 3 tonnes.
Q. 3. What are different mechanism of Brake actuation.
Ans. Generally following are the actuation methods:
(a) Mechanical brakes
(b) Hydraulic brakes
© Electric brakes
(d) Vaccum brakes
(e) Air brakes.
Q. 4. What is fading of Brakes?
Ans. Fading of brakes means that friction is decreased between brake drum and brake lining due to regular use of brake.
Q. 5. What do you mean by bleeding of Brakes?
Ans. Bleeding means to drive out air from braking system. Because if air is entered into braking system their is no actuation of brakes.
Q. 6. What are the basic requirement for braking fluid?
Ans. 1. It should have high boiling temperature.
2. Viscosity of braking fluid should be less.
3. Brake fluid should not act as corrode agent to component which comes into contact.
Q. 7. Comparison between drum and disk brake.
Ans. 1. Drum brakes are heavier than disk brake.
2. Less fading of brake lining takes place in disk brake as compared to drum brakes.
3. In disk brakes uniform wear of friction lining as compared to drum brakes.
4. Disk brakes are more efficient than drum brakes.
Q. 8. What is the locking of wheel during braking?
Ans. When the braking force is more than force of adhesion then wheel is stopped
and start slipping on the road. The stopping of wheel by braking is called locking.
Q. 9. Which factors generally effect braking.
Ans. 1. Radius of brake drum and diameter of wheel.
2. Area of brake lining and amount of pressure applied.
3. Coefficient of friction.
Q. 10. Write few advantages of hydraulic system of braking.
Ans 1. There is less friction in hydraulic system of braking because there are less
joints as compared to mechanical brakes.
2. System is self lubricating.
3. In hydraulic system equal pressure is in every circuit.
4. System is more flexible than mechanical system.
Q. 11. What is a leading shoe?
Ans. A leading shoe is that whose tip is dragged along the drum even when their is
no brake force. Due to this reason leading shoe fade more than trailing shoe.
Q. 12. What is the function of brake value?
Ans. Function of the brake value is to control the intensity of the braking system in
air brakes.
It is operated by either foot treadle or by push rods linkage.
Q. 13. What do you understand by brake chamber?
Ans. It is a chamber installed on each wheel to connect pressure energy of compressed air into useful mechanical energy for proper application of brakes.