Electrical Machines Larger values of air flux density is taken while designing IM for larger bore diameter. none. larger output. both. larger bore diameter. none. larger output. both. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor can be reversed by transposing all the three leads from the supply. transposing any two leads from slip rings. disconnecting any one phase. transposing any two leads from supply. transposing all the three leads from the supply. transposing any two leads from slip rings. disconnecting any one phase. transposing any two leads from supply. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip rings of an induction motors are made of phosphor bronze. aluminium. carbon. stainless steel. phosphor bronze. aluminium. carbon. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs decrease. either of these. None of these increase. decrease. either of these. None of these increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 15) times the synchronous speed. (1 / 5) times the synchronous speed. 0.5 times the synchronous speed. 5 times the synchronous speed. (1 / 15) times the synchronous speed. (1 / 5) times the synchronous speed. 0.5 times the synchronous speed. 5 times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 150 V. 300 V. 200 V. 223.V. 150 V. 300 V. 200 V. 223.V. ANSWER DOWNLOAD EXAMIANS APP
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