Electrical Machines Voltage regulation of transformer is given by (E2 - V2) / E2 (V2 - E2) / V2 (E2 - V2) / V2 (V2 - E2) / E2 (E2 - V2) / E2 (V2 - E2) / V2 (E2 - V2) / V2 (V2 - E2) / E2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Supply voltage. Armature current. Armature voltage. Field excitaion. Supply voltage. Armature current. Armature voltage. Field excitaion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements about commutating poles which are fitted on most large dc Shunt motors: 1. The commutating poles are placed in the geometric neutral plane and their number is usually Equal to the number of main poles 2. The winding on the commutating poles is connected in series with the shunt-field winding on the main poles 3. The polarity of the commutating pole must be that of the next pole further ahead 4. The commutating poles neutralize the reactance voltage produced in the coil undergoing Commutation. Of these statements, 1, 2 and 3 are correct 1, 2 and 4 are correct 1 and 4 are correct 2, 3 and 4 are correct 1, 2 and 3 are correct 1, 2 and 4 are correct 1 and 4 are correct 2, 3 and 4 are correct ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects voltage but not the torque torque but not the voltage neither the voltage nor the torque both the torque and voltage voltage but not the torque torque but not the voltage neither the voltage nor the torque both the torque and voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following relation is correct? None of these Xd > Xq. Xd < Xq. Xd = Xq. None of these Xd > Xq. Xd < Xq. Xd = Xq. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator, voltage drops occurs in armature resistance, leakage reactance and armature reaction. armature resistance and leakage reactance. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance, leakage reactance and armature reaction. armature resistance and leakage reactance. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. ANSWER DOWNLOAD EXAMIANS APP
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