Electrical Machines In a single phase induction motor, the starting torque developed is proportional to 1/V² V² supply voltage V 1/V 1/V² V² supply voltage V 1/V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by varying the applied voltage. changing the field excitation. changing the load. varying the speed. varying the applied voltage. changing the field excitation. changing the load. varying the speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? constant loss None of these variable loss both A and B constant loss None of these variable loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will run much faster in the same direction. The motor will run in reverse direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The motor will run much faster in the same direction. The motor will run in reverse direction. The motor will run at its normal speed in the same direction as before. The motor will stop. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature coil is short circuited by brushes when it lies along field axis. along neutral axis. in none of above positions. in any of above positions. along field axis. along neutral axis. in none of above positions. in any of above positions. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? Armature flux distorts the main field flux. Both option B and C. None of the options. Armature flux weakens the main field flux. Armature flux distorts the main field flux. Both option B and C. None of the options. Armature flux weakens the main field flux. ANSWER DOWNLOAD EXAMIANS APP
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