i need to give section engineer (electrical engineer) for
RRB. Please suggest some book
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If the load is 10Kw and power factor has to improve from 0.5 to 0.8,how can we select the capacitor rating accordingly.Illustrate by showing formula?
what is LDR used in street light
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what is the disadvantage if earth is connected to neutral
Define peak time.
Why is tan-delta test and capacitor measurement done on alternator?
What do you mean by ratio correction factor of instrument transformer?
In what circumstanced the CT used for protection relay will be saturated?and what will happen to the relay is the CT is saturated?
What is cut-off rate?
how many stairs have you climbed while you were coming
we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards
what is a diffrence between MCCB, RCCB, MCB, & ELCB ? what is rated current e.g. on motor name plate indicated that is rated curent? what is full load current? If we run D.C. motor with mechanical coupling and we measure voltage on terminal it shows voltage or not ? same in AC also possible ?