Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 25 ppm. 20 ppm. 35 ppm. 45 ppm. 25 ppm. 20 ppm. 35 ppm. 45 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, for the same value of Æ, Z and N; which one of the following statements is correct? Armature emf is same as long as the flux density in the air gap remains the same. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. Armature emf is more with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. Armature emf is more with wave winding than with lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An unexcited single phase synchronous motor is reluctance motor. AC series motor. universal motor. repulsion motor. reluctance motor. AC series motor. universal motor. repulsion motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? None of these Good voltage regulation High voltage regulation Low short circuit current None of these Good voltage regulation High voltage regulation Low short circuit current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Where the shunt generators are widely used? Where the load is very high. Where voltage variation is needed over a wide load range. Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. Where the load is very high. Where voltage variation is needed over a wide load range. Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under operating conditions the rotor conductor should be _________________ in induction motor. semi closed or semi opened. always closed. none. always opened. semi closed or semi opened. always closed. none. always opened. ANSWER DOWNLOAD EXAMIANS APP
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