Electrical Machines The principal of starting of 3 - Φ IM is similar to synchronous motor. transformer with short-circuited secondary. capacitor run IM. repulsion motor type starting. synchronous motor. transformer with short-circuited secondary. capacitor run IM. repulsion motor type starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 30°. 24°. 45°. 10°. 30°. 24°. 45°. 10°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer action requires a increasing magnetic flux. alternating magnetic lux. constant magnetic flux. alternating electric flux. increasing magnetic flux. alternating magnetic lux. constant magnetic flux. alternating electric flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Considering a galvanometer is connected to the rotor of a 3 - Φ, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed? 1440. 1435. 1500. 1450. 1440. 1435. 1500. 1450. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is 570 A. 440 A. 340 A. 250 A. 570 A. 440 A. 340 A. 250 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 1600W, 800W 800W, 1600W 1000W , 1400W 1400W, 1000W 1600W, 800W 800W, 1600W 1000W , 1400W 1400W, 1000W ANSWER DOWNLOAD EXAMIANS APP
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