Electrical Machines which of the following type of brush and their application is/are correct electro graphite → large ratings copper graphite → low voltage high current density carbon brush → normal ratings All of these electro graphite → large ratings copper graphite → low voltage high current density carbon brush → normal ratings All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for three phase to single phase transformation. single phase to three phase transformation. any of the above. three phase to two phase transformation. three phase to single phase transformation. single phase to three phase transformation. any of the above. three phase to two phase transformation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 2 point starter 3 point starter All of these 4 point starter 2 point starter 3 point starter All of these 4 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The size of inter poles is small as compared to main poles. What is the reason? In order to get saturated. In order to get more flux. All of these In order to not to get saturated. In order to get saturated. In order to get more flux. All of these In order to not to get saturated. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 50 Hz 60 Hz 40 HZ 25 Hz 50 Hz 60 Hz 40 HZ 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/3 1/√5 1/√2 2/√5 1/3 1/√5 1/√2 ANSWER DOWNLOAD EXAMIANS APP
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