Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? 0 < S < 1 0 < S < 2 -2 < S < 2 -1 < S < 1 0 < S < 1 0 < S < 2 -2 < S < 2 -1 < S < 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Reduce. Oscillate around the normal speed. Remain unaltered. Increase. Reduce. Oscillate around the normal speed. Remain unaltered. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using star connection. V connection. delta connection. zig - zag connection. star connection. V connection. delta connection. zig - zag connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking the trailing edge of the brush. sparking at the middle of the brush. no sparking. sparking at the leading edge of the brush. sparking the trailing edge of the brush. sparking at the middle of the brush. no sparking. sparking at the leading edge of the brush. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to increase starting torque. reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. increase starting torque. reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the maintenance and repair All of these increase the iron loss increases the design cost increase the maintenance and repair All of these increase the iron loss increases the design cost ANSWER DOWNLOAD EXAMIANS APP
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