Question

What is the range of the pressure under which the field coils are consolidated?

(a) 4-10 MN per m^2

(b) 3-10 MN per m^2

(c) 4-12 MN per m^2

(d) 4-15 MN per m^2

I have been asked this question in class test.

Question is taken from Design of Field Winding topic in chapter Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Correct option is (c) 4-12 MN per m^2

Easy explanation: The minimum pressure under which the field coils are consolidated is 4 MN per m^2. The maximum value of the pressure under which the field coils are 12 MN per m^2.