SSC-JE ME || Machine Design 4

Consider the following characteristics of the brake lining material

1) It should have low wear rate

2) It should have low heat dissipation capacity

3) It should have high coefficient of thermal expansion

4) It should have high heat resistance

Select the correct option which indicates desirable properties

If the moment due to actuating force and that due to friction force acts in the same direction, then the block brake is called  _____.

A block–brake shown below has a face width of 300 mm and a mean co–efficient of friction of 0.25. For an activating force of 400 N, the braking torque in Nm is

A single plate clutch is subjected to an axial force of 4 kN. The inside radius of the contact surface is 50 mm and the outside radius is 100mm. Assuming the uniform wear theory, the ratio of the average pressure to minimum pressure is______.

Which one of the following is not a friction clutch?

On the motors with low starting torque, the type of the clutch to be used is

In a multiple disc clutch, if there are 6 discs on the driving shaft and 5 discs on driven shaft, the number of pairs of contact surfaces will be equal to

For uniform wear condition of clutches, friction radius is equal to