Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 400 A. 40 A. 440 A. 44 A. 400 A. 40 A. 440 A. 44 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulator is preferred for providing large values of load current? Zener diode shunt regulator. Transistor series regulator. None of these Transistor shunt regulator. Zener diode shunt regulator. Transistor series regulator. None of these Transistor shunt regulator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.6. 0.8. 0.4. 1. 0.6. 0.8. 0.4. 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects torque but not the voltage voltage but not the torque both the torque and voltage neither the voltage nor the torque torque but not the voltage voltage but not the torque both the torque and voltage neither the voltage nor the torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as It is cheaper in cost. It runs at very high speed at light load. It develops high starting torque. It consume less power. It is cheaper in cost. It runs at very high speed at light load. It develops high starting torque. It consume less power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power flow of a dc motor, with respect to a DC generator is modified. none of these. reversed. increased. modified. none of these. reversed. increased. ANSWER DOWNLOAD EXAMIANS APP
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