Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? -2 < S < 2 0 < S < 1 -1 < S < 1 0 < S < 2 -2 < S < 2 0 < S < 1 -1 < S < 1 0 < S < 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Methods of synchronizing of alternator may be done by all dark lamp method. all bright lamp method. all of these. one dark two bright. all dark lamp method. all bright lamp method. all of these. one dark two bright. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements: To control the speed of a dc shunt motor above the base speed over a reasonably wide range, the motor must 1. have compensating winding 2. have interpole winding 3. be started using a 3-point starter 4. be started using a 4-point starter Of these statements 1, 2 and 3 are correct 1, 2 and 4 are correct 2 and 4 are correct 1 and 3 are correct 1, 2 and 3 are correct 1, 2 and 4 are correct 2 and 4 are correct 1 and 3 are correct ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine shape of armature MMF wave is? Triangular and directed towards brush axis. Saddle shape. Triangular and directed towards main pole. Peaky in nature. Triangular and directed towards brush axis. Saddle shape. Triangular and directed towards main pole. Peaky in nature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction? 100. 750. 200. 500. 100. 750. 200. 500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means neutralising residual magnetism. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. neutralising residual magnetism. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. ANSWER DOWNLOAD EXAMIANS APP
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