How starting torque increase by increasing rotor resistance? | Electrical Interview question
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- čas přidán 15. 08. 2022
- In this video "How does starting torque increase by increasing rotor resistance?" we have discussed Induction motors, their types (squirrel cage and slip-ring ) torque speed characteristics of induction motor, how torque developed in motor, the effect of rotor resistance on torque.
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#induction #motor #torque #electrical
sable alag explanation bhai, or sabse logical
but ye bataiye mera doubt ye haiki,
hum jab rortor me resistance lagate hai to, rotor me current ko aane se rokte hai, matlab current kum aa raha hai, par torqe ko drive karne k liye current chahiye n???, agar toque badh raha hai matlab load badh raha hai, or agar load badhega tab current apne aap badhega. pr hum resistance laga k current ko rok de rahe hain.
or baki jitne youtubers ka video dekh raha hon, wo log keh rahe hai, resistance jyada hone se current kum hoga jisse torque badhega jispe mujhe thoda v vishwas nhi ho raha
Bro, Actually adding external resistance to increase the torque in the starting condition only not always. So, when motor will run as it's full speed the external resistance will be terminated.😊
Bro, Actually adding external resistance to increase the torque in the starting condition only not always. So, when motor will run as it's full speed the external resistance will be terminated.😊
Thank you sir,
Aapka video bahut hi usefull hota hai ham jaise electrical engineering students k liye
Sir please continue video dalte rahe 😊
Thanks sir for clearing my doubt. From many days I was having this doubt and no one was able clear my doubt in a easy way but you made it so easy to understand that I will never forget it 🙂
Gjbbb sir thankyou so much sir very important information 👈👈❣
Fantastic sir, by adding external resistance in the slip ring type induction motor can increase the power factor. 😊
Very very nice video. your video helps a lot me and my friends. thank you so much keep it up.👌🏻🤗
Thanks for sharing such valuable content ☺️
❤️❤️
Thank you Sir.... Valuable for EE students...
What a great explanation 😮
Very good explain .. Very simple... Now no confused... 👍
Very nice and well explained !
sir i watching all your video very valuable video , and learn many more Thanks for your efforts.. 🙏🙏😀
Very very thank you sir to explain this topic 🙏🙏
appreciate your work bro.., keep it up, your explanation is unique
Great....Technical Answer............
nice explanation cos0==1 multiplying factor!. voltage current in phase or current following closely with voltage will absorb energy faster hence produce more torque, also lesser heating due to copper losses in winding.Heat always weakens magnetic field!. Divert heat to resistance than copper winding!.
Heat always weakens magnetic field??
Bahut badiya video banate ho janab aap aap printing press machine pr banaye ek video
Sure, Noted! 😊
Thank you very much sir . Ek video transducer pe bhi banaye sir. Sir apke wajah se mujhe bahut kuch sikne ko mila . Aap mere liye Great teacher ho.
Very good tech
Very good sir
Super sir 🙏, thanks for it
Knowledge 👍
How much power factor increases, that means higher limit.
Also only p.f. is sufficient to increase the torque or any other parameter variations required.
Thank you very much
I have a doubt, If we apply external resistance then it will limit the rotor's current (by ohms law) which will further reduce the torque.🤔
Same question?
ohms law work in some condition..
You are right. When we add external resistance rotor current will decrease and power factor will increase till some value of resistance i.e., r2=x2. Untill r2=x2 the decrement of cirrent is less than increase in power factor so total power will increase. But when r2 is increased more than x2 the total power will decrease.
Final conclusion is resistance increase then torque also increase with rotor sleepring
Actually adding there external resistance to increase the torque in the starting condition only not always. So, when motor will run as it's full speed the external resistance will be terminated.
Agar hum log external resistance ki nikal de aur uss jaga pe ek drive install karke let ek Crane ki chalaye toh starting torque kaise improve hoga can u explain.
Tysm ❤️
Nice video🥰
Bohot achcha
Nice brother 👍
Thanks
finally I got the answer. thank you.
😊❤️
Torque k equation me inversely proportion me R^2 hai uska kya?
Sir sabhi videos par series wise 1, 2, 3 marking kar dijiye ta Jo step by step knowledge mil sake
galactic cosmic rays attracted to cooler stator windings. Cosmic rays help increase magnetic flux hence torque. Same galactic cosmic rays cool poles, solar cosmic rays heat equator. Both solar and galactic cosmic rays oppose eachother. same reason earth poles have high magnetic field.
Thanks 👍 sir
Nich
👍👍👍
Sir ji biot savart law ke upper ek details video banayie n
Yesterday i was discuss this topic with my frnd... But i don’t understand whole concept and today i found your video...
Thanks brother my all doubt are clear now regarding this... 🥸👍
❤
Hi sir, very nice explanation. I have 1 doubt , Tst ke formula me sX2 ka term to neglect ho jata h aur denominator m sirf R2 rhta h, to R2 to inversely proportional kyu nhi hua torque ko?
Motor ke stater ma iron ke pati keyou hoti hai
Sir in some videos they are saying that as armature current decrease torque increase
But Resistance badhane se current bhi toh decrease hoga n
Torque directly proportional current
If we increase the active power total power bhi toh badhega to kaise pf improve hoga
sir, rotor circuit me resistance add karne se power factor improve hoga but sath hi rotor current I2 decrease hoga. please explain.
Adding resistance is used only for starting. Later this additional resistance is not applied or removed during normal running.
Product of I2 and powerfactor will increase by adding resistance till r2=x2 because increase in power factor is more than decrease in current
Ek question h sir
LT motor me CT ratio se realy ki seeting kese kre
Sir sm pump and bustor pump double motor k panel ki wiring diagram or connection ki video bna do please 🙏
Star- Delta starter power & control........
Sir rpm ke bare me bataiye
Sir mera ek question hai....rubber or koi v high resistance cheez .... maximum kitna amp current sahen kar sakta hai....
Sir Star_delta starter pe 1 video banae full concept ke sath
Okay, noted! 😊
Waise ishe video ko bhi check kr sakte hain Yahn bhi thora Start and delta starter par baat ki hai.
Which motor draws more current start or delta : czcams.com/video/AUSntMkM7mI/video.html
Rotar ka winding wire ka guage kaise low torque or high rpm deti hai?
Sir आप three phase induction motor topic par pura vedio banao please.
Ji aste aste har ek concept cover krne ke koshish kar rahe hain different different topic ke form mein, aap motor wali playlist jarur check kijiega already Kafi kuchh discuss kar Liya hai.
😍😍😍😍😘😘😘
Sir question h sir ek baar ye clear ker dijiye ki transmission kitne voltages tak hota h or distribution kitne voltages tsk hota matlab sir hmey kese pta chlega voltage level dek ker ki ye transmission h ya distribution ek video m samja dijiye sir please 🙏🙏🙏🙏
Sir video bna dijiye please 🙏🙏🙏
Neutral aur Earthing short hone pe RCCB trip q ho jati h detail me bataye ???
Sir rotor current decrease hoga na to torque badhega kya
Now double cage induction motor is made for high starting torque
Sir, can we increase the power factor by connecting the capacitor instead of Resistance.
Capacitor takes reactive power bro.... So power factor will be less if we add capacitor or inductor..
If we connect external resistance then are we not wasting electricity in the form of heat?
Yes we are wasting, thats why we have to cutoff the resistance after acceleration period
But resistance also reduce the rotor current .
Starting current ज्यादा क्यो होते है
ᵖʳᵒᵐᵒˢᵐ
Thanks
Star- Delta starter power & control........