Electrical Machines The noise resulting from vibrations of lamination set by magnetic forces, is termed as magnetostriction. zoom. hum. boo. magnetostriction. zoom. hum. boo. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases then field flux remains constant. decreases increases. decreases. remains constant. decreases increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is prefered for which of the following rating? low current and low voltage high current and low voltage high current and high voltage low current and high voltage low current and low voltage high current and low voltage high current and high voltage low current and high voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 20 ppm. 25 ppm. 35 ppm. 45 ppm. 20 ppm. 25 ppm. 35 ppm. 45 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? None of the options. Permanent magnets. Both B and C. Electromagnets. None of the options. Permanent magnets. Both B and C. Electromagnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce magnetizing current. increase starting torque. reduce chance of cogging. reduce chance of crawling. reduce magnetizing current. increase starting torque. reduce chance of cogging. reduce chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
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