Answer / ravinder kumar

Advantages:
1) Induction motor is less expensive motor with quite simpler construction.
2) Its a very rugged motor which require less maintenance.




1 phase induction motor is a non self starting motor while 3 phase induction motor is a self starting motor. Also 1 phase induction motor is quite noise machine as compare to 3 phase induction motor.

Answer / kapil bahadure

the advantage of induction motor:-
1} smoller in size.
2} light in waight.
3} less maintaning cost.
4} easy to repair.
5} less sparking produced.
6} it is cabonless.
the diffrence between 1-phase and 3-phase induction:-
1} 1-phase winding created in 1-phase I.M.&three phase
winding created in the 3-phase I.M.
2} changing magnetic flux produced by 1-phase I.M.&
rotating magnetic flux by 3-phase I.M.

Differnce between earthing and nuetral

3 Answers   S Tech, wbsedcl,

---

how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment

0 Answers  

---

IN WHICH MODE THE TRANSFORMER WILL GET A MAXIMUM OUT PUT VOLTAGE. ASKED FOR POWER GRID EXAMINATION STAT-STAR,STAR-DELTA,DELTA-STAR,DELTA-DELTA

3 Answers  

---

WHAT IS MODULATION AND NEED FOR MODULATION ?

1 Answers  

---

what is the order of mgnetiation current in a current transformer of 1000A/1A ratio?

2 Answers   Power Grid,

---

our plant maximum demand has 500 kva.need to suggest me to maintained pf 0.98.how much capacitor bank will be connect to the supply line.

1 Answers  

---

What is meant by a linear circuit and what is a non- linear circuit?

5 Answers  

---

Explain the method to keep noises low in a control system?

0 Answers   HPCL,

---

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

---

in the farm,water tank of 8000 litter capacity situated in 12 meter above.Farm owner want to lift 7000 litter of water within 7 minute to water tank of 12 meter above.which motor having HP rating is suitable for pumping??

1 Answers   ABB, Anchor, Havells, Keltron, KSEB, L&T, vguard,

---

how many current required for hypo test

0 Answers  

---

why transformer core is eathed?

7 Answers   ECE,

---