Electrical Machines Field weakening control method is used for the _________ ? both A and B above rated speed None of these below rated speed both A and B above rated speed None of these below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Coulombs law. Faradays law of electromagnetic induction. Amperes law. Newtons law. Coulombs law. Faradays law of electromagnetic induction. Amperes law. Newtons law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Commutator. Conservator tank. Tap changer. Radiator. Commutator. Conservator tank. Tap changer. Radiator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. none of these. has no relation. inversely. directly. none of these. has no relation. inversely. directly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron reduces the saturation magnetization. None of these increases the hysteresis loss. increases the electrical resistivity of iron. reduces the saturation magnetization. None of these increases the hysteresis loss. increases the electrical resistivity of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for parallel operation of alternators? Both 1and 2 Speed of alternators should be same Terminal voltage is same Frequency should be same Both 1and 2 Speed of alternators should be same Terminal voltage is same Frequency should be same ANSWER DOWNLOAD EXAMIANS APP
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