Electrical Machines In a single phase induction motor, the starting torque developed is proportional to 1/V 1/V² supply voltage V V² 1/V 1/V² supply voltage V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? same in both methods armature resistance control None of these field weakening method same in both methods armature resistance control None of these field weakening method ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous cannot be due to windage friction. variable frequency. variable supply voltage. variable load. windage friction. variable frequency. variable supply voltage. variable load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 20 V zero 50 V 40 V 20 V zero 50 V 40 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 0.2 ohm 100 ohm 10 ohm 2 ohm. 0.2 ohm 100 ohm 10 ohm 2 ohm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Fail to start. Nothing will happen. Will results in open circuit. Will results in short circuit. Fail to start. Nothing will happen. Will results in open circuit. Will results in short circuit. ANSWER DOWNLOAD EXAMIANS APP
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