The armature MMF wave in a DC machine is ____________
A. sinusoidal and depends on the speed
B. square and independent of speed
C. triangular and depends on speed
D. triangular and independent of speed
Answer:A
The armature MMF wave in a DC machine is ____________
A. sinusoidal and depends on the speed B. square and independent of speed C. triangular and depends on speed D. triangular and independent of speed
Explanation: The armature MMF for a DC machine remains constant in amplitude and does not depend on the armature speed, also the MMF wave produced is seen to be a triangluar MMF wave.