Electrical Machines Armature resistance control method is used for the _______ ? above rated speed below rated speed both 1 and 2 None of these above rated speed below rated speed both 1 and 2 None of these ANSWER DOWNLOAD EXAMIANS APP
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 DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by armature winding commutator starters field winding armature winding commutator starters field winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 1.06 0.95 0.87 0.96 1.06 0.95 0.87 0.96 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC shunt motor if load is increased, the speed increase proportional. increased slightly. remains constant. reduce slightly. increase proportional. increased slightly. remains constant. reduce slightly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct statements? EMF per turn in both the windings are equal EMF per turn in HV winding is less than EMF per turn in LV winding All of these EMF per turn in HV winding is more than EMF per turn in LV winding EMF per turn in both the windings are equal EMF per turn in HV winding is less than EMF per turn in LV winding All of these EMF per turn in HV winding is more than EMF per turn in LV winding ANSWER DOWNLOAD EXAMIANS APP
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