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. 44 A. 440 A. 40 A. 400 A. 44 A. 440 A. 40 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is Proportional to the square of armature current. Inversely proportional to the armature current. Proportional to the armature current. None of above. Proportional to the square of armature current. Inversely proportional to the armature current. Proportional to the armature current. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed by a synchronous motor depends on supply voltage, load angle and excitation supply voltage and excitation supply voltage and load angle excitation and load angle supply voltage, load angle and excitation supply voltage and excitation supply voltage and load angle excitation and load angle ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control is provides speed control In both direction. Below rated speed. In one direction only. Above rated speed. In both direction. Below rated speed. In one direction only. Above rated speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V, 50 Hz, 4 pole single phase induction motor is rotating in the clockwise ( forward ) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8 Ω. Then the effective rotor resistance in the backward branch of the equivalent circuit will be 4 Ω. 8 Ω. 2 Ω. 10 Ω. 4 Ω. 8 Ω. 2 Ω. 10 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. ANSWER DOWNLOAD EXAMIANS APP
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