Electrical Machines A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because field winding was wrongly connected field resistance was higher than critical resistance there was a break in the armature circuit field system lost residual magnetism field winding was wrongly connected field resistance was higher than critical resistance there was a break in the armature circuit field system lost residual magnetism ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake both 1 and 2 None of these non reversing drive reversing drive both 1 and 2 None of these non reversing drive reversing drive ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for parallel operation of alternators? Speed of alternators should be same Both 1and 2 Terminal voltage is same Frequency should be same Speed of alternators should be same Both 1and 2 Terminal voltage is same Frequency should be same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be demagnetisation. none of above. cross-magnetization as well as demagnetization. cross-magnetisation. demagnetisation. none of above. cross-magnetization as well as demagnetization. cross-magnetisation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The ___________________ generator has the poorest voltage regulation. shunt. differential compounded. under-compounded. over compounded. shunt. differential compounded. under-compounded. over compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which single phase motor is used for a refrigerator? Repulsion. Split phase. Universal. Capacitor run. Repulsion. Split phase. Universal. Capacitor run. ANSWER DOWNLOAD EXAMIANS APP
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