The equivalent coefficient of friction in case of block brake with lon – McqOptions

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1.	The equivalent coefficient of friction in case of block brake with long shoe is denoted by [4Sin /2 +sin4 ].
A.	True
B.	False
Answer» C.

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A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Maximum pressure intensity is 0.5N/mm . If the width of friction lining is 90mm, find the reaction at pivot in horizontal direction. Assume coefficient of friction as 0.2.
A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Maximum pressure intensity is 0.5N/mm . If the width of friction lining is 90mm, find the torque capacity f each shoe. Assume coefficient of friction as 0.2.
A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100 . Calculate the distance of pivot from axis of drum.
Shoe is constrained to move towards the drum to compensate for the moment acting.
The equivalent coefficient of friction in case of block brake with long shoe is denoted by [4Sin /2 +sin4 ].