Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is magnetizing. ineffective. demagnetizing. cross – magnetizing. magnetizing. ineffective. demagnetizing. cross – magnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC motor used for shears and punches is Differential compound motor. Cummulative compound motor. Shunt motor. Series motor. Differential compound motor. Cummulative compound motor. Shunt motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 4 2, 4 1, 3 2, 3 1, 4 2, 4 1, 3 2, 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents field winding reactance a reactance operating at synchronous speed All of these armature reactance and leakage reactance field winding reactance a reactance operating at synchronous speed All of these armature reactance and leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ slip ring motor has any of the above. double cage rotor. wound rotor. short-circuited rotor. any of the above. double cage rotor. wound rotor. short-circuited rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The breakdown torque of a synchronous motor varies as 1/V² 1/V V² applied voltage V 1/V² 1/V V² applied voltage V ANSWER DOWNLOAD EXAMIANS APP
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