Answer / iamdon

At no load the speed of IM is VERY CLOSE TO SYNCHRONOUS
SPEED but not equal to synchronous speed.

As the mechanical load on the motor shaft is increased,the
motor slow down.Due to which the relative motion between
rotating magnetic field and rotor conductor increases.Thus
more emf will induce in rotor conductor according to
Faraday's laws.Since rotor conductors are short circuited
so more current is induced according to Lenz law.The
induced current will flow through rotor conductor causing
more electromechanical torque to be developed.In this way
motor meets the increased load demand.

Author:arbelectbit@yahoo.com

Answer / himansu prusti

according to this above question,when we are connecting a load across motor ,at the time motor will draw more amount of current which will dominant resistance present in the rotor,and hence the power factor will improved which will simultaneously improve the torque.because as we know torque in the induction motor is T=Er*Ir*cosφ.

Bhel supervision exam question: If 2 generators are working in a network. And if suddenly the field of anyone generator weakens. What will happen in the network? 1. The generator will run as motor 2. The generator will run as motor in reverse direction 3. The generator will take lighter load 4. The generator will take more load

9 Answers   Bhel,

---

In directional earth fault protection for generator, one core balance CT is for residual current, what other CT is for, which is placed on neutral?

2 Answers  

---

Why battery rooms painted with dark colour

1 Answers   BAL, MSETCL Maharashtra State Electricity Transmission Co Ltd, Polycab,

---

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

0 Answers  

---

what are the parameters plays a major role in Potential transformer Burden calculation??

0 Answers   ABB,

---

what is the difference in MCB, MCCB, RCCB, ELCB, & MPCB (motor protection circuit bracker)

12 Answers   Afcons, Bhel, CIHSR, DCS, IOCL, L&T, Lupin, Siemens,

---

what is the diff. b/w restricted earth fault relay & standby earthfault relay and where they are used?

4 Answers   KSK Energy, Reliance,

---

what is the best method of grounding in 30 MW generator?

0 Answers  

---

In LT Line What is the minimum clearance required between phase to phase busbar & between Phase to body of the panel? Also between Neutral &phase, & Neutral & body of panel. as per standards.

1 Answers  

---

what is advertised hop count

0 Answers  

---

am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

0 Answers   L&T,

---

Pls explain about full theory of salient pole generator?

1 Answers   Kirloskar,

---