Electrical Machines The emf induced in a conductor rotating in a bipolar field is None of these AC. both of above. DC. None of these AC. both of above. DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the supply terminal of a DC shunt motor are interchanged The motor will run at its normal speed in the same direction as before. The motor will stop. The direction of rotation will reverse. The motor will run much faster in the same direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The direction of rotation will reverse. The motor will run much faster in the same direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be imperfect contact. severe sparking. any of above. rough commutator surface. imperfect contact. severe sparking. any of above. rough commutator surface. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Reduce. Remain unaltered. Increase. Oscillate around the normal speed. Reduce. Remain unaltered. Increase. Oscillate around the normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard system, the lower limit of the speed imposed by None of above. Field resistance. Armature resistance. Residual magnetism of the generator. None of above. Field resistance. Armature resistance. Residual magnetism of the generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Oil impregnated paper. Vacuum. Mica. Glass. Oil impregnated paper. Vacuum. Mica. Glass. ANSWER DOWNLOAD EXAMIANS APP
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