Electrical Machines In above question, find rms line voltage for delta connection? 230.2 V. 399 V. 50 V. 100 V. 230.2 V. 399 V. 50 V. 100 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 2, 3 and 4. 2 and 4. 1, 3 and 4. 1, 2 and 3. 2, 3 and 4. 2 and 4. 1, 3 and 4. 1, 2 and 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce magnetizing current. reduce chance of crawling. increase starting torque. reduce chance of cogging. reduce magnetizing current. reduce chance of crawling. increase starting torque. reduce chance of cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. kept constant to certain value. decreased. increased. remains unchanged. kept constant to certain value. decreased. increased. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is field current control armature circuit resistance control All of these supply voltage control field current control armature circuit resistance control All of these supply voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A triangular mmf wave is produced in the air gap of an electric machine. Such wave is produced by rotor of an synchronous machine. stator of a dc machine. stator of a induction machine. rotor of a dc machine. rotor of an synchronous machine. stator of a dc machine. stator of a induction machine. rotor of a dc machine. ANSWER DOWNLOAD EXAMIANS APP
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