Electrical Machines To avoid formation of grooves in the commutator the brushes of same polarity should track each other. the brushes of opposite polarity should track each other. brush position has no effect on the commutator grooving. None of these the brushes of same polarity should track each other. the brushes of opposite polarity should track each other. brush position has no effect on the commutator grooving. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon load current supply frequency both 2 and 3 maximum flux density load current supply frequency both 2 and 3 maximum flux density ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will Decrease.d remains same. none of these. increase. Decrease.d remains same. none of these. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The back emf produced in a dc motor depends on none of these. Z. P and Z. P. none of these. Z. P and Z. P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The change in speed of a DC generator due to increased load is corrected by increasing armature resistance. increasing armature cooling. increasing terminal voltage. increasing input power of the prime mover. increasing armature resistance. increasing armature cooling. increasing terminal voltage. increasing input power of the prime mover. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of bushing stud. condition of transformer oil. condition of transformer. condition of bushings. condition of bushing stud. condition of transformer oil. condition of transformer. condition of bushings. ANSWER DOWNLOAD EXAMIANS APP
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