Electrical Engineering Interview Questions

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Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .

811what happens if DG N earthing fails while running and N Earthing fails while Transformer on load ???what will be the impact ???????/

I need the proper answer on :- What is the Earthing Value as per the standard for Raw power and UPS Pit and in panel /DB N-E value ???

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Un-Answered Questions { Electrical Engineering }

any application of back emf

what is through fault?

A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor

What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

How Diesel Generator start ?

how to failure indution motor insulation & how to improve heat in motor insulation

what is the safty of poly phase tranformer?

what is W.T?specify the acceptable range?

direction of tarbine& genrator

How can we increase fuel-power ratio of any DG set?

what is the internal working of star delta starter

Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?

How does HT work & Voltage required?