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Un-Answered Questions { Electrical Engineering }

IN induction motor pf is increased using capacitors.what will be the effect on motor and system when very large capacitor is accidently installed and pf goes leading.

1322


what is negative d.c. voltage, why this voltage is used in base transciever station.

1474


what is a types of short circuit and what is a types of distance protection tests

1440


A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1313


ITI r/tv trade APPLY (J.T.O VACANCEY) ALSO INCLUD AITT ELECTRONIC,WRITEEN XAM DONE 23.03.10 BUT NO RESPONCE WHY ANATHER ID gopal_gh007@rediffmail.com

2626


why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.

1292


What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

1521


In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

1233


What will be the effect if I use inverter as UPS mood?

1510


What is the exact formula for one weber of magnetic flux?

1423


1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1184


what types of electrical & mechanical test conducted in switchyard?

1448


what is ground fault in ACB?

1403


why output is out of phase in case of common emitter?

1402


how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.

1456