In both simple band brake and differential band brake, at least one end of the band passes through fulcrum.
Explanation: In differential, neither end of the brake passes through fulcrum.
Is it possible to prevent back rotation of drum?
Explanation: Back stop brake can be used to prevent rotation of drum.
A self-locking differential brake and back stop brakes is same thing.
Explanation: Back stop brake is other name of self locking differential brake.
Band brake has complex construction with large number of parts.
Explanation: Band brake has simple construction with small number of parts.
Band brakes require _____ maintenance.
Explanation: There is relatively less maintenance required as there are small number of parts and hence chances of brake going out of order is less.
The wear of band brake is even.
Explanation: There is uneven wear from one side to other side of the friction lining.
Calculate the braking torque if tension in the two sides is 3500N and 1980N with radius of drum being 160mm.
Explanation: Braking torque=(3500-1980)x160/1000.
In drum brakes, as the temperature increases coefficient of friction ______
Explanation: Coeffecient of friction varies inversely with the temperature.
Loss of torque transmitting capacity at high temperatures is called
Disk brakes largely suffer from the problem of self-locking.
Explanation: There is no problem of self-locking in disk brakes.