Electrical Machines Why are capacitors used with large AC induction motor? Improve current level. Improve power level. Improve voltage level. Improve power factor. Improve current level. Improve power level. Improve voltage level. Improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? unshaded, unshaded shaded, shaded unshaded, shaded shaded, unshaded unshaded, unshaded shaded, shaded unshaded, shaded shaded, unshaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors. Calculate the back emf produced when it is running at a speed of 1500 rpm. 240 volt. 220 volt. 440 volt. 230 volt. 240 volt. 220 volt. 440 volt. 230 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. inversely. none of these. has no relation. directly. inversely. none of these. has no relation. directly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for parallel operation of alternators? Terminal voltage is same Both 1and 2 Speed of alternators should be same Frequency should be same Terminal voltage is same Both 1and 2 Speed of alternators should be same Frequency should be same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing open circuit and zero power factor tests. short circuit and slip tests. open circuit and short circuit tests. zero power factor and slip tests. open circuit and zero power factor tests. short circuit and slip tests. open circuit and short circuit tests. zero power factor and slip tests. ANSWER DOWNLOAD EXAMIANS APP
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