Electrical Machines An ideal synchronous motor has no starting torque because rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in a DC machine is in direct opposition to the main poles. makes an angle of 90° with the main pole axis. makes an angle with the main pole axis which is load dependent. is in the same direction as the main poles. is in direct opposition to the main poles. makes an angle of 90° with the main pole axis. makes an angle with the main pole axis which is load dependent. is in the same direction as the main poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A differentially compound motor under high-over-load conditions will behave like a / an cummulative compound motor. AC synchronous motor. shunt motor. series motor. cummulative compound motor. AC synchronous motor. shunt motor. series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is 8. 16. 4. 32. 8. 16. 4. 32. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is 3Fmax. (3/2)Fmax. (1/2)Fmax. Fmax. 3Fmax. (3/2)Fmax. (1/2)Fmax. Fmax. ANSWER DOWNLOAD EXAMIANS APP
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