Friction Clutches MCQs

May 20, 2021

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1. In the running condition, the net force acting on the drum of centrifugal clutch is equal to

2.

 In case of single plate new clutches and brakes, the friction radius is equal to

    Where, ‘D’ and ‘d’ are outer and inner diameters of friction lining respectively.

3.

In case of single plate worn out clutches and brakes, the friction radius is equal to

    Where, ‘D’ and ‘d’ are outer and inner diameters of friction lining respectively.

4. In the beginning of engagement of a centrifugal clutch,

5. The commonly used angle between leather or asbestos friction lining surface and axis of cone clutch for a cone clutch is

6. In case of multi-plate clutch if n1 is number of disks on driving shaft and n2 is the number of disks on driven shaft, then the number of pairs of contacting surfaces is given by

7. In case of multi-disk clutches, oil is used,

8. The torque transmitted by single plate clutch, working on uniform wear criterion, is given by,    Where, µ = coefficient of friction, P = axial force required to hold the friction surfaces together, Rmin = mean radius of friction surfaces

9. The clutch used in trucks is

10. In case of cone clutch, a relatively small axial force can transmit a given torque, if the semi-cone angle is


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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