Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? -3% +3.33% -3.33% +3% -3% +3.33% -3.33% +3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is cumulatively compounded. shunt connected. differentially compounded. separately excited. cumulatively compounded. shunt connected. differentially compounded. separately excited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors have the advantage of less cost. simple in construction. less maintenance. all of below. less cost. simple in construction. less maintenance. all of below. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During hunting of a synchronous motor field excitation increases. damper bar develops torque. negative phase sequence currents are generated. harmonic are developed in the armature circuit. field excitation increases. damper bar develops torque. negative phase sequence currents are generated. harmonic are developed in the armature circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will not start at all. rotate in direction opposite to that before maintenance. get heated and damaged. rotate in the same direction as before maintenance. not start at all. rotate in direction opposite to that before maintenance. get heated and damaged. rotate in the same direction as before maintenance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as It consume less power. It is cheaper in cost. It runs at very high speed at light load. It develops high starting torque. It consume less power. It is cheaper in cost. It runs at very high speed at light load. It develops high starting torque. ANSWER DOWNLOAD EXAMIANS APP
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