Moderate

In D.C. machines, ir order to prevent excessive distortion of field form by the armature reaction, the field mmf must be made____________?

Correct answer: C. large in comparison with the armature mmf

A. equal to that of armature mmf
B. less in comparison with the armature mmf
C. large in comparison with the armature mmf
D. none of the above

Explanation

A strong field mmf dominates the armature mmf, so the armature reaction produces less relative distortion of the main field. This is why the field mmf is designed large in comparison with the armature mmf.

Last updated 16 September 2026

Practise Electrical Machines

1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Electrical Machines test All Electrical Machines MCQs

Exams that ask Electrical Engineering questions like this

Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Assistant Engineer Electrical Test Electrical Engineering80 MCQs Sub Engineer Electrical Test Electrical Engineering70 MCQs

In D.C. machines, ir order to prevent excessive distortion of field form by the armature reaction, the field mmf must be made____________?

Practise Electrical Machines

Exams that ask Electrical Engineering questions like this

Related questions