Electrical Machines For a single phase capacitor start induction motor which of the following is valid? Rotation can be changed by interchanging supply terminals. None of these. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. Rotation can be changed by interchanging supply terminals. None of these. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of the current in the compensating winding is________ to the direction of current in the armature conductors? None of these exactly opposite same either of these None of these exactly opposite same either of these 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 Increase. Remains same. Decrease. None of these. Increase. Remains same. Decrease. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? None of these variable loss constant loss both A and B None of these variable loss constant loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When applied rated voltage per phase is reduce to one half, the starting torque of three phase squirrel cage induction motor becomes 1/2 of the initial value 1/4 of the intial value twice the initial value 4 time the initial value 1/2 of the initial value 1/4 of the intial value twice the initial value 4 time the initial value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to limit the armature current. control field current. none of above. vary the armature resistance. limit the armature current. control field current. none of above. vary the armature resistance. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS