Question

What is the maximum value of the peripheral speed that should not exceed?

(a) 25 m per sec

(b) 20 m per sec

(c) 30 m per sec

(d) 35 m per sec

This question was addressed to me by my college director while I was bunking the class.

I want to ask this question from Separation of D and L, Standard Frames in division General Concepts and Constraints in Design of Rotating Machines of Design of Electrical Machines

Answer 1

Correct option is (c) 30 m per sec

To elaborate: The peripheral speed of the machine should not exceed 30 m per sec. If it exceeds it leads to the damage of the windings. The banding wires on the overhang have to be made so strong if the peripheral speed exceeds 30 m per sec.