Electrical Machines Armature reaction in dc motor results increase in speed. open circuit. short circuit. decrease in speed. increase in speed. open circuit. short circuit. decrease in speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always unity. is always lagging. is always leading. depends on the power factor of the load. is always unity. is always lagging. is always leading. depends on the power factor of the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 150Hz. 200Hz. 100Hz. 50Hz. 150Hz. 200Hz. 100Hz. 50Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has low ratings only? Shaded pole Capacitor run Capacitor start Resistance split phase Shaded pole Capacitor run Capacitor start Resistance split phase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tap changer is generally provided in power transformer. current transformer. earthing transformer. voltage transformer. power transformer. current transformer. earthing transformer. voltage transformer. ANSWER DOWNLOAD EXAMIANS APP
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