Electrical Machines Normally for the design of transformer the ambient temperature is taken as 27°C. 32°C. 35°C. 45°C. 27°C. 32°C. 35°C. 45°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator? same frequency same prime mover speed same phase sequence same voltage magnitude same frequency same prime mover speed same phase sequence same voltage magnitude ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Star - delta Delta - star Star - star Delta - delta Star - delta Delta - star Star - star Delta - delta ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is more and maximum torque decreases more and maximum torque remains constant less and maximum torque increases less and maximum torque decreases more and maximum torque decreases more and maximum torque remains constant less and maximum torque increases less and maximum torque decreases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the supply terminal of a DC shunt motor are interchanged The motor will run much faster in the same direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The direction of rotation will reverse. The motor will run much faster in the same direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The direction of rotation will reverse. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 14.28%. 15.30%. 16.67%. 18.25%. 14.28%. 15.30%. 16.67%. 18.25%. ANSWER DOWNLOAD EXAMIANS APP
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