In dc motor starter there is less voltage required for holding contactor that's may why it is called no volt coil. but in ac starter why holding contactor is called no volt coil.
JSW,
2 Electrical Engineering 4608If there is unit power factor in a power house and a capacitor bank used in a factory at resistive load . In this case, will there leading power factor in power house across that factory.
2 Electrical Engineering 3426how can we solve the RMS value of alternative Qnty is .707 , explain detail .
2 Electrical Engineering 3688AC is the magnitude of sinosudial-wave but we use cose value to determine power factor instead of sine value.
2 Electrical Engineering 3349In case of legging current of 20°, pf is .94 and leading of 20°,pf is .94 , in mathematicaly both are same but in realy how it is differ ?
3 Electrical Engineering 3912In legging current reactive power is arise but in leading current which power will be arise ? and in this case, is active power more than rated ?
3 Electrical Engineering 4221if the stetor speed (N S) increase by 20% then the rotor speed will be increased by 20% is it true. ?
4 Electrical Engineering 4719Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
Electrical Engineering 1514
why transformer ratings in kva?
Answer
Is This Answer Correct ? | 1 Yes | 0 No |
why transformer ratings in kva?
Answer
Is This Answer Correct ? | 1 Yes | 0 No |
In 3 phase induction motor 1hp current rating is 1.5 amps
constant ? is correct or not ?
Answer
Is This Answer Correct ? | 5 Yes | 2 No |
Question { 8860 }
Difference between KW & kVA
Answer
Is This Answer Correct ? | 2 Yes | 0 No |
Question { 24793 }
IF 5000amp current on LT 440V. then how much it will draw
amp on HT 11KV side
Answer
Is This Answer Correct ? | 1 Yes | 0 No |
Question { 6348 }
Why DC Currents are not used in transformer?
Answer
Is This Answer Correct ? | 2 Yes | 1 No |
Question { 6006 }
What size cable is used for HT cable to the transformer of
630kVA, and the supply voltage is 11kV
Answer
Is This Answer Correct ? | 4 Yes | 2 No |
Question { 24274 }
how many voltage or current enough to kill a person?
Answer
Is This Answer Correct ? | 1 Yes | 4 No |
what is the basic difference between synchronous
motor,synchronous generator and induction motor
Answer
Is This Answer Correct ? | 5 Yes | 0 No |
why we use 3 phase in our country?..why no 4,5 or 2??
Answer
Is This Answer Correct ? | 17 Yes | 5 No |
what happen when dc supply is given to the transformer
Answer
Is This Answer Correct ? | 3 Yes | 0 No |
Question { 3073 }
what is power transformer?
Answer
Is This Answer Correct ? | 6 Yes | 1 No |
Question { 4579 }
1. what is exciting winding, rotor winding, startor
winding. and how it works? in ac generator
Answer
Is This Answer Correct ? | 6 Yes | 0 No |
Question { 7325 }
why the transformer neutral earthing is to be done by copper
flat only,if we use GI flat what is the disadvantage.
Answer
Is This Answer Correct ? | 8 Yes | 0 No |