What will happen 50 HZ motor when you will give 60 HZ?

Bhushan Power Steel,

WHY HOLDING CONTACTOR OF MOTOR STARTER IS CALLED NO VOLT COIL.

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,

If 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.

how can we solve the RMS value of alternative Qnty is .707 , explain detail .

AC is the magnitude of sinosudial-wave but we use cose value to determine power factor instead of sine value.

In 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 ?

In 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 ?

Why the transformers are rated in KVA ? in new view

pf of synchronius motor is unity, is it axact(=one) value. ?

if the stetor speed (N S) increase by 20% then the rotor speed will be increased by 20% is it true. ?

What is the disadventage of gland earthing(power cable) if any. ?

In three phase supply why we use R Y B Colour not other.

Some 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.

Actually why the transformers ate rated in KVA.?

Torrent Pharma, XYZ,