Electrical Machines Which of the following motor has negative speed regulation? Series motor Cumulative compound motors Shunt motor Differential compound motor Series motor Cumulative compound motors Shunt motor Differential compound motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 = I2 I1 < I2 None of these I1 > I2 I1 = I2 I1 < I2 None of these I1 > I2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of sinusoidal. triangular. rectangular. trapezoidal. sinusoidal. triangular. rectangular. trapezoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Normally for the design of transformer the ambient temperature is taken as 32°C. 45°C. 27°C. 35°C. 32°C. 45°C. 27°C. 35°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current Decreases. None of above. Increases. Remains unchanged. Decreases. None of above. Increases. Remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? None of these D.C. cumulative compound motor. D.C . series motor. D.C. shunt motor. None of these D.C. cumulative compound motor. D.C . series motor. D.C. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
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