Electrical Machines At the instant of starting, the per unit slip of 3 - Φ induction motor is 0.1. 0.05. 1.0. 0.5. 0.1. 0.05. 1.0. 0.5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Ns Zero S.Ns Nr Ns Zero S.Ns Nr ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor is clockwise when it is supplied with 3 - Φ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be C - A - B. B - C - A. B - C - A or C - A - B. A - C - B. C - A - B. B - C - A. B - C - A or C - A - B. A - C - B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Series motor. Cumulative compound motor. Shunt motor. Differential compound motor. Series motor. Cumulative compound motor. Shunt motor. Differential compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutation in a DC machine may be explained as a process by which electric current in a coil is reversed. how alternate flux affects the main field flux. by virtue of which emf is induced in the armature conductors. in which magnetic field is set up. by which electric current in a coil is reversed. how alternate flux affects the main field flux. by virtue of which emf is induced in the armature conductors. in which magnetic field is set up. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of a alternator, if P = number of poles and N = revolution made per second? 120N / P Hz. 120P / N Hz. 120 / PN Hz. PN / 2 Hz. 120N / P Hz. 120P / N Hz. 120 / PN Hz. PN / 2 Hz. ANSWER DOWNLOAD EXAMIANS APP
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