Electrical Machines In a DC machine, the angle between the stator and rotor fields is 0o. dependent upon the load. 90o. 180o. 0o. dependent upon the load. 90o. 180o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate maximum voltage. no voltage. maximum power. maximum current. maximum voltage. no voltage. maximum power. maximum current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will decrease but Pe will remain same Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will increase but Pe will decrease Ph will decrease but Pe will remain same Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will increase but Pe will decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is magnetizing. ineffective. cross – magnetizing. demagnetizing. magnetizing. ineffective. cross – magnetizing. demagnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be zero. about 2 V. 220 V. about 50 V. zero. about 2 V. 220 V. about 50 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? S 1/S 1-S 2-S S 1/S 1-S 2-S ANSWER DOWNLOAD EXAMIANS APP
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