Electrical Machines What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will stop. The motor will run at its normal speed in the same direction as before. The motor will run much faster in the same direction. The motor will run in reverse direction. The motor will stop. The motor will run at its normal speed in the same direction as before. The motor will run much faster in the same direction. The motor will run in reverse direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC motors, under trailing pole tips, flux density will_______ ? increase either increase or decrease None of these decrease increase either increase or decrease None of these decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing inter poles. compensating winding. any one or more of the above methods. high resistance carbon brushes. inter poles. compensating winding. any one or more of the above methods. high resistance carbon brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a standard frequency the machine operates at a particular speed known as synchronous speed. any of the above. slip speed. normal speed. synchronous speed. any of the above. slip speed. normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 1 at 90°C. 2 at 90°C. 3 at 90°C. 0.5 at 90°C. 1 at 90°C. 2 at 90°C. 3 at 90°C. 0.5 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following motor is preferred for belt conveyor? Universal motor. Slip ring induction motor. Synchronous motors. Reluctance motor. Universal motor. Slip ring induction motor. Synchronous motors. Reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
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