Electrical Machines Which of the following is not a part of transformer? Commutator. Radiator. Tap changer. Conservator tank. Commutator. Radiator. Tap changer. Conservator tank. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of armature reaction. None of these permanent magnets. residual magnetism. armature reaction. None of these permanent magnets. residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For larger units high torque it is preferred to use Slip induction motor. Partial motor. DC shunt motor. Universal motor. Slip induction motor. Partial motor. DC shunt motor. Universal motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of inter poles. magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. magnetization of inter poles. magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V/2, I and P/2 V, I and P V/2, I/2 and P/4 V, I/2 and P/2 V/2, I and P/2 V, I and P V/2, I/2 and P/4 V, I/2 and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 1, 3 and 4. 1, 2 and 3. 2, 3 and 4. 2 and 4. 1, 3 and 4. 1, 2 and 3. 2, 3 and 4. 2 and 4. ANSWER DOWNLOAD EXAMIANS APP
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