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Electrical Engineering Mcqs — Test 30

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Question 1
If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then
Question 2
In which of the following motors the stator and rotor fields rotate simultaneously?
Question 3
A rotory converter can also be run as a___________?
Question 4
Due to which of the following reasons a synchronous motor fails to pull into synchronism after applying D.C. field current?
Question 5
In a 3-phase synchronous motor, the negative phase sequence exists when the motor is_______________?
Question 6
In a synchronous motor, damper windings are provided on____________?
Question 7
The net armature voltage of a synchronous motor is equal to the_______________?
Question 8
A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed
Question 9
The torque angle, in a synchronous motor, is the angle between_______________?
Question 10
By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ?