1.

Critical speed of rotation, N (in rps - rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec2 and, r = radius of trammel, metre. )

A. <img src="/_files/images/chemical-engineering/mechanical-operations/120-344-1.png">
B. <img src="/_files/images/chemical-engineering/mechanical-operations/120-344-2.png">
C. <img src="/_files/images/chemical-engineering/mechanical-operations/120-344-3.png">
D. <img src="/_files/images/chemical-engineering/mechanical-operations/120-344-4.png">
Answer» B. <img src="/_files/images/chemical-engineering/mechanical-operations/120-344-2.png">


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