Question is ⇒ Under which of the following conditions hunting of synchronous motor is likely to occur ?, Options are ⇒ (A) Periodic variation of load, (B) Over-excitation, (C) Over-loading for long periods, (D) Small and constant load, (E) , Leave your comments or Download question paper.

Question is ⇒ Under which of the following conditions hunting of synchronous motor is likely to occur ?, Options are ⇒ (A) Periodic variation of load, (B) Over-excitation, (C) Over-loading for long periods, (D) Small and constant load, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Under which of the following conditions hunting of synchronous motor is likely to occur ?
A.	Periodic variation of load [Correct Answer]
B.	Over-excitation [Wrong Answer]
C.	Over-loading for long periods [Wrong Answer]
D.	Small and constant load [Wrong Answer]
View Answer 3 -2 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒ A synchronous motor will always stop when
supply voltage fluctuates
load in motor varies
excitation winding gets disconnected
supply voltage frequency changes

⇒ Which of the following resistances can be measured by conducting insulation resistance test on a synchronous motor?
Phase to phase winding resistance
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⇒ The synchronous motor is not inherently self-starting because
the force required to accelerate the rotor to the synchronous speed in an instant is absent
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D.C. shunt motor
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⇒ A synchronous motor develops maximum power when load angle is
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⇒ The ratio of starting torque to running torque in a synchronous motor is
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⇒ If one-phase of a 3-phase synchronous motor is short-circuited, motor
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⇒ In a synchronous machine in case the axis of field flux is in line with the armature flux, then
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the machine will vibrate violently
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⇒ Higher the applied ____voltage will be the stator flux and____ will be the pullin torque
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⇒ The standard full-load power factor ratings for synchronous motors are
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⇒ If load (or torque) angle of a 4-pole synchronous motor is 6° electrical, its value in mechanical degrees is
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⇒ The effect of increasing the load on a synchronous motor running with normal excitation is to
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⇒ Mostly, synchronous motors are of
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induction type machines
salient pole type machines
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