In a band and block brake, the ratio of tensions on the tight and slack sides of band is given by (where = Coefficient of friction between the blocks and the drum, = Semi-angle of each block subtending at the centre of drum, and n = Number of blocks)

In a band and block brake, the ratio of tensions on the tight and slac

1.	In a band and block brake, the ratio of tensions on the tight and slack sides of band is given by (where = Coefficient of friction between the blocks and the drum, = Semi-angle of each block subtending at the centre of drum, and n = Number of blocks)
A.	<img src="/_files/images/mechanical-engineering/machine-design/595-456-1.png">
B.	<img src="/_files/images/mechanical-engineering/machine-design/595-456-2.png">
C.	<img src="/_files/images/mechanical-engineering/machine-design/595-456-3.png">
D.	<img src="/_files/images/mechanical-engineering/machine-design/595-456-4.png">
Answer» E.