Electrical Machines A generator may loose residual magnetism due to any of these. vibrations. heating. over excitation. any of these. vibrations. heating. over excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 0.3. 0.54. 1. 0.7. 0.3. 0.54. 1. 0.7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has more magnetic core loss. less magnetic core loss. no magnetic core loss. more copper loss. more magnetic core loss. less magnetic core loss. no magnetic core loss. more copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Drip proof. Splash proof. Open type. Totally enclosed fan coiled. Drip proof. Splash proof. Open type. Totally enclosed fan coiled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for parallel operation of alternators? Frequency should be same Terminal voltage is same Speed of alternators should be same Both 1and 2 Frequency should be same Terminal voltage is same Speed of alternators should be same Both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers produce working flux flux path completion mechanical protection to the machine both A and B produce working flux flux path completion mechanical protection to the machine both A and B ANSWER DOWNLOAD EXAMIANS APP
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