The operation of a synchronous motor operating on constant excitation across infinite bus will not be stable if power angle δ?(a) exceeds internal angle θ(b) is less than θ(c) is more than θ/2(d) is less than θ/2The question was asked during an online exam.Enquiry is from Synchronizing Power and Synchronizing Torque in section Synchronous Machine Stability of Electrical Machines

The operation of a synchronous motor operating on constant excitation

1.	The operation of a synchronous motor operating on constant excitation across infinite bus will not be stable if power angle δ?(a) exceeds internal angle θ(b) is less than θ(c) is more than θ/2(d) is less than θ/2The question was asked during an online exam.Enquiry is from Synchronizing Power and Synchronizing Torque in section Synchronous Machine Stability of Electrical Machines
Answer» Correct choice is (a) exceeds internal angle θ To EXPLAIN I would SAY: Power angle should not exceed θ, to OPERATE under NORMAL conditions.

Discussion

No Comment Found

Related InterviewSolutions

When an alternator is loaded suddenly the torque produced in damper is?(a) Induction motor(b) Induction generator(c) Synchronous motor(d) Synchronous generatorI got this question in an international level competition.Enquiry is from Hunting and Damper Windings topic in chapter Synchronous Machine Stability of Electrical Machines
When the rotor speed becomes greater than synchronous speed, which type of torque is produced in damper winding?(a) Induction generator(b) Synchronous generator(c) Reluctance motor(d) Induction motorI have been asked this question during an online interview.My query is from Hunting and Damper Windings in division Synchronous Machine Stability of Electrical Machines
At synchronous speed, relative speed between rotating air-gap flux and damper is?(a) zero(b) Ns(c) lesser than Ns(d) more than zeroI have been asked this question in a national level competition.I'm obligated to ask this question of Hunting and Damper Windings in portion Synchronous Machine Stability of Electrical Machines
Damper winding should have ___________(a) high resistance(b) low starting torque(c) low resistance(d) low reactanceI got this question in an interview for internship.This is a very interesting question from Hunting and Damper Windings in chapter Synchronous Machine Stability of Electrical Machines
Turbo generators do not use damper winding due to ___________(a) solid steel rotor core(b) laminated armature(c) soft iron core(d) small current flow in pole shoesThis question was addressed to me in a job interview.This is a very interesting question from Hunting and Damper Windings in division Synchronous Machine Stability of Electrical Machines
The damper winding are placed in ___________(a) pole shoes(b) series with armature(c) series with field(d) rotor slotsI had been asked this question during an online interview.My question comes from Hunting and Damper Windings topic in division Synchronous Machine Stability of Electrical Machines
Damper windings are made of ___________(a) copper(b) iron(c) silicon(d) cast ironI have been asked this question at a job interview.My enquiry is from Hunting and Damper Windings topic in portion Synchronous Machine Stability of Electrical Machines
Using a _____ can be used to limit hunting.(a) Flywheel(b) DC Exciter(c) Large load(d) Any of the mentionedThis question was posed to me in homework.The doubt is from Hunting and Damper Windings topic in portion Synchronous Machine Stability of Electrical Machines
Employment of damper winding will reduce hunting.(a) True(b) FalseThis question was addressed to me in an interview for job.Origin of the question is Hunting and Damper Windings topic in division Synchronous Machine Stability of Electrical Machines
What are the probable causes of hunting?(a) sudden change in load(b) fault in supply(c) sudden change in field current(d) all of the mentionedI had been asked this question in an interview for job.Asked question is from Hunting and Damper Windings in chapter Synchronous Machine Stability of Electrical Machines

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment