Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? -1 < S < 1 0 < S < 2 0 < S < 1 -2 < S < 2 -1 < S < 1 0 < S < 2 0 < S < 1 -2 < S < 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Operating speed. Starting torque. Full load current. Starting torque, operating speed, full load current. Operating speed. Starting torque. Full load current. Starting torque, operating speed, full load current. 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 1. 0.8. 0.6. 0.4. 1. 0.8. 0.6. 0.4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines How can the synchronous speed of a 3 - Φ IM be varied? By varying number of poles. By varying the supply frequency. Both (A) and (B). By varying supply voltage. By varying number of poles. By varying the supply frequency. Both (A) and (B). By varying supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has more stability None of these both motors has same stability cylindrical motor salient pole motor None of these both motors has same stability cylindrical motor salient pole motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp? 60 V. 30 V. 40 V. 90 V. 60 V. 30 V. 40 V. 90 V. ANSWER DOWNLOAD EXAMIANS APP
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