Electrical Machines Example of double excited machine is None of these DC Shunt Motor Both are correct. Synchronous motor. None of these DC Shunt Motor Both are correct. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The mmf produced by rotor currents of a 3 - Φ induction motor rotates at synchronous speed with respect to rotor. rotates at the speed of rotor in the air gap. rotates at slip speed with respect to stator mmf. is at standstill with respect to stator mmf. rotates at synchronous speed with respect to rotor. rotates at the speed of rotor in the air gap. rotates at slip speed with respect to stator mmf. is at standstill with respect to stator mmf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the speed of a dc motor increases with load torque, then it is a comulatively compounded motor permanent magnet motor series motor differentially compounded motor comulatively compounded motor permanent magnet motor series motor differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field system of an alternator is usually excited 110 / 220 V AC. 230 V AC. 250 / 250 V DC. 3 - Φ, 50 Hz and 400 V. 110 / 220 V AC. 230 V AC. 250 / 250 V DC. 3 - Φ, 50 Hz and 400 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? Back emf is equal to half the applied voltage. Back emf is equal to zero. Back emf is equal to applied voltage. None of above. Back emf is equal to half the applied voltage. Back emf is equal to zero. Back emf is equal to applied voltage. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Low. Same as full load. Equal to 1. High. Low. Same as full load. Equal to 1. High. ANSWER DOWNLOAD EXAMIANS APP
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