No iron losses means _______ are zero.

A. only hysteresis losses

B. only copper losses

C. hysteresis and eddy current losses

D. eddy current and copper losses

Please scroll down to see the correct answer and solution guide.

Right Answer is: C

SOLUTION

No iron loss means eddy current loss and hysteresis loss are zero.

Eddy current loss and hysteresis loss depends upon the magnetic properties of the material used for the construction of the machine. Hence these losses are also known as core losses or iron losses.

Eddy current loss = \({P_h} = {k_h}f{B^x}\)

Hysteresis loss = \({P_e} = {k_e}{t^2}{f^2}{B^2}\)

Here f = frequency, B = flux density, t = thickness