Top 33 MCQs on Synchronous Motor | Synchronous Machines MCQs | Electrical Machines MCQs | 🔴 हिंदी

Hello Everyone,
Kindly Note That- V Curve is drawn between 'if' and 'ia' where 'ia' is plotted on y-axis and 'if' on x-axis.
This session discusses the TOP 33 Most Important MCQs on the topic Synchronous Machines which is useful for every electrical competitive exams like SSCJE, MAHADISCOM, PGCIL, MAHAGENCO, UPPCL, DMRC, IRSO, MAHATRANSCO, GATE, DRDO and other exams.
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#synchronousmachines #synchronousgenerator #electricalmcq

[@sopankale1807]

Q18 The synchronous motor is made self-starting by providing a special winding on the rotor poles, known as damper winding or squirrel cage winding. AC supply given to the stator produces a rotating magnetic field which causes the rotor to rotate.

[@anandsharma4174]

Superb sir,thank you for your efforts for us.

[@ElectricalEngineeringMCQs]

It's my pleasure, Anand, Kindly DO Share this session with your friends.

[@anilkamble9312]

Great….

[@mysticismonflute]

Sir in case of question 14 there are 2 options of 90 degrees...and aisa exam me bhi hota hai to ham konsa select kare...?

[@ElectricalEngineeringMCQs]

I will cover the same question with detailed answer for more clarity.

[@uk4221]

Superb

[@er.parmjeetsingh5036]

Thanks

[@user-vl6tt8ck9l]

Nice

[@lingamurthy4079]

Q1 Ans:-Two types of rotor are used in synchronous motor

[@shubhamshende9995]

Good job sir

[@tatabirala8419]

In question 23 if excitation get cutoff it will run as reluctant motor if generated electromagnetic torque is more than load torque...

[@saleemmarri9165]

Bahth hii zaberdast sir ..I improved alot from ur lectures ..Salam from pakistan

[@ElectricalEngineeringMCQs]

Kindly DO Share this session with your friends.

[@ajayattri9251]

Sir continuous video

[@sathishraikindi96]

Super sir

[@ElectricalEngineeringMCQs]

Stay tuned Sathish and DO share.

[@hellothere637]

Please provide mcqs on power quality issues for MPSC MES MAINS exam.

[@sanketaswar6729]

I like very nice

[@ElectricalEngineeringMCQs]

Thank you sanket. Do share and stay tuned.

[@tatabirala8419]

In question 28 synchronous motor operating power factor .8 leading ..

[@maxclass985]

Non salient pole is also known as cylindrical rotor type of synchronou motor

[@rehamanthpatnala7046]

Smooth cylinderical rotor

[@shashankkumar174]

nice

[@gajulavenkateshwarlu6056]

Sr lag.tealugulo bolo chapadi

[@ManishKumar-of8dq]

Questions no 12 synchronous motor run at unity pf

[@manishkumar-vn9do]

Sir questions 17 ja answer to aapne field current bataya tha, ye load angle kaise ho gaya

[@harrykaushik2508]

Sir haryana jee ka paper hai 1 sept ko pls sir electrical jee k jitne b important questions ho pls 1 video bna do sir 1 sept se pehle pls

[@jaideepchoudhary6501]

sir synchronous motor most stable unity power factor pe hogi. na ki leading pe..que,12

[@WBP.K]

West Bengal PSC JE ka session kara doo sir

[@riteshmehra2879]

Sir, Kindly share synchronous motor pdf

[@kapilmatoria3894]

Power developed is maximum when load angle is 45 .. P = EV/Xd * sinδ + V²/2 * (Xd-Xq)/(Xd*Xq) *sin2δ

[@ElectricalEngineeringMCQs]

I appreciate your keen observation Kapil. This question was not deliberately gone into the depth of direct axis and quadrature axis reactance. We are not considering the effect of V²/2 * (Xd-Xq)/(Xd*Xq) *sin2δ here so if we put δ=90 which gives sin90 nearly to 1 so does we get maximum power. I hope you understood it.

[@kapilmatoria3894]

@@ElectricalEngineeringMCQs you have to keep this in consideration because you have explained that synchronous motor has Salient pole rotor which is partially correct because it also has cylinderical rotor which is used in thermal power plant. Coming back to maximum power quadrature axis reactance can't be ignored in salient pole rotor. It can be ignored in cylinderical rotor which you have neglected in very first question.

[@ElectricalEngineeringMCQs]

​@@kapilmatoria3894 Indeed, I will consider this in next sessions so to have better clarity. I appreciate your kind explanation. Moreover, you may have observed that salient pole synchronous machines are more stable than the cylindrical rotor because Xd the direct axis reactance is lower than Xq (quadrature axis reactance) hence rotor remains more stable(in elect. power supply), compare to round rotor where Xd=Xq. Even maximum power transfer(Pm) occurs at a torque angle delta less than 90 degrees. Yet for high speed elect. power generators, round rotor are used, as are the more stable mechanical point of view. I have considered some of these points and came up with this conclusion, and considering the mcqs which I have explained from the synchronous chapter are the questions which have been generally asked in the examination. I hope you understood the same Kapil. Stay tuned.

[@KuMaRkUmAR-wr1yt]

Sir please make video on important numericals for rrb je level from machine and Power system

[@ElectricalEngineeringMCQs]

Sure. Stay tuned for more sessions.

[@ranjeetjaiswal1341]

18 ka A hoga

[@bholubareth9949]

Please make vedios of measurement and include numerical also

[@ElectricalEngineeringMCQs]

Sure.

[@karlakuntavijaykumar2959]

Hi sir

[@RAKHAL358]

Sir have you cross check the Q. No 18

[@manishkumar-vn9do]

Sir questions no. 22 ka supply voltage change bhi to ho Sakta hai explain plz

[@ElectricalEngineeringMCQs]

Yes but for a fixed operating speed the most significant is to change the Frequency.

[@KrushnaChmeher-is7qw]

Database mcq bi hona chahiye

[@salmansawer9682]

Sir v curve Apne galat banaya hai x axis field current hoga tab na excitation change karne pe armature current ayega mean ia depends on If

[@ElectricalEngineeringMCQs]

I appreciate your keen observation salman and thank you for your kind correction. The explained curve has been blurred out to avoid confusion and corrected figure will be uploaded in the pdf as well. Stay tuned and DO share.

[@SachinSharma-xy1rf]

Bhai pls volume loud karo

[@satishlilwan4640]

sir theori class suru kare jaldi

[@manishkumar-vn9do]

Sir questions no. 15 ka answer achhi tarah explain kar dijiye

[@ElectricalEngineeringMCQs]

Sure, Manish I will consider this in my next session.

[@amangiri407]

6:52

[@ratikantamahapatra8847]

what is the difference between Field and Armature?

[@shaileshbirajdar1963]

Winding which produces main flux called field winding where winding carrying current( Load or source current) called armature winding

[@vikashverma7613]

Sir iska pdf de dijiye

[@Vibha4]

there is a mistake in Ques.18- damper windings on rotor poles should be the answer.

[@ElectricalEngineeringMCQs]

Thank you Vibha for your kind response i will crosscheck the same soon.

[@Veerkushwaha-s5s]

Yes sir ans of que no 18 will be damper winding on rotor poles

[@animalsloverentertainment7213]

Answer bhi likh diya kro na ,

[@shivansingh7115]

sir pdf

[@pranjalsrivastava1962]

Sir what is the power developed by a synchronous motor.... According to u if we put 0 degree as torque angle in thr फार्मूला v*eb/xs **sin§ if we put del is equal to 0 then the power developed is 0 M i right sir or not??

[@ElectricalEngineeringMCQs]

Correct. Sin 90 Degree equals to 1 and so the power developed will be maximum.

[@pranjalsrivastava1962]

Ok thnx sir

[@panwar8016]

i m having CONFUSION IN QUESTION NO " 13" I THINK CORRECT ANSWER IS "90 DEGREE"

[@pranjalsrivastava1962]

How's 90 degree... Torque angle is the angle between rotor and stator. while no load the angle between this two is 0... Bcoz they are coincide each other... Dont confused its very simple to think

[@UsmanKhan-zz4bx]

Question 18 answer may be option A.

[@ElectricalEngineeringMCQs]

I'll cross check usman. Kindly Stay tuned.

[@UsmanKhan-zz4bx]

Thanx Sir..

[@rakeshnambiar9431]

Sir, please share the pdf of this video if u have.. Very urgent for me.

[@ElectricalEngineeringMCQs]

PDF has been uploaded on the telegram. Kindly DO Download Rakesh and Share it with your friends.

[@rakeshnambiar9431]

@@ElectricalEngineeringMCQs Okay Sure Sir.. Thankzz For the Reply

[@gangadhardas3318]

Damper winding Kia hai💥💥💥

[@ElectricalEngineeringMCQs]

Damper winding helps to start synchronous motor as a Induction motor in its initial run.

[@vamsikrishnaallu8809]

Q 18 answer may be option 1

[@devnathsahu2166]

D is right

[@baidyanathsoren7956]

how answer is D

[@baidyanathsoren7956]

Answer a is ryt

[@angelgirl6789]

Sir I have a all subject's pdf plz sir

[@ElectricalEngineeringMCQs]

Sure Karuna I will upload them on the telegram channel .

[@angelgirl6789]

Thank you so much sir 🙏

[@user-zd4fl8yl2j]

Sir 18 ka a hona chahiye

[@ElectricalEngineeringMCQs]

Thank you for your response Satyam I will crosscheck and rectify if any and same will be updated in the PDF as well DO Share this session with your friends.

[@mampidas9070]

Sir apdcl ke liya JE ka paper solve digiaa..... It's so important.... 🙏🙏🙏

[@ElectricalEngineeringMCQs]

Sure. I have taken your request Kindly Stay tuned I will try to upload the same shortly.

[@ringmaster6371]

Copy of V K mehta objective questions..

[@ElectricalEngineeringMCQs]

Understanding is the key! Kindly DO Explore our recent sessions as well and Share them with your friends.

[@user-zd4fl8yl2j]

33 vala nhi samjh me aya

[@ElectricalEngineeringMCQs]

I will consider the same question soon Satyam. Kindly DO Share this session with your friends.

[@errathvamukesh2313]

Sir Help me Electrical MCQ ??

[@ElectricalEngineeringMCQs]

Sure kindly elaborate your concern.

[@raviduttdhiman6493]

प्रशन पढ भी नही पाते है बहुत जलदी करते हो

[@ElectricalEngineeringMCQs]

Thank you ravidutt for your kind feedback I have noted your kind suggestion. Kindly stay tuned and DO Share.