Electrical Machines The armature MMF waveform of a DC machine is rectangular. sinusoidal. pulsating. triangular. rectangular. sinusoidal. pulsating. triangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called crawling. skewing. cogging. slip. crawling. skewing. cogging. slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At the instant of starting, the per unit slip of 3 - Φ induction motor is 0.1. 1.0. 0.5. 0.05. 0.1. 1.0. 0.5. 0.05. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A self-excited shunt generator fails to build up, because 1. the field circuit is open 2. The armature circuit is open 3. the residual magnetism is absent 4. The direction of rotation is wrong From these, the correct answer is 1, 3 1, 2 and 3 1, 2, 3 and 4 3 only 1, 3 1, 2 and 3 1, 2, 3 and 4 3 only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine shape of main field flux distribution is? saddle shape peaky in nature triangular flat tapped or trapezoidal saddle shape peaky in nature triangular flat tapped or trapezoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise eddy-current loss hysteresis loss mechanical loss temperature rise eddy-current loss hysteresis loss mechanical loss temperature rise ANSWER DOWNLOAD EXAMIANS APP
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