Electrical Engineering Interview Questions
Questions Answers Views Company eMail

where to use CT and PT?

Reliance, CEB,

4 47241

how to use single phase supply for a three phase equipement.

785

which is dangerous AC or DC?

10 6031




what is diffrential relay used in generator plz give brief explanation

4 3104

what is reverse power relay brief explanation and in b/w where it is connected

705

which connection is there in a rotor of the motor

HAL, All Trades Electrical,

2 2545

We wish to test 60 Hz systems from a 50 Hz supply. To acheive frequency conversion, we use a VFD. The VFD powers 40 kVA transformer, which has motor and non-motor loads on it. Will the transformer work?

Suzlon,

2 3572

Why SF6,VCB,Oil Ckt Breakers are use in HT Side need brief information ?

Shell,

5 13048




what is the form factor of DC?

6 3778

is there any phase difference occurs while primary and secondary side mutual induction occurs?

637

what happens when series resonance occurs?

603

what happens when parallel resonance occurs?

2 2376

what is LOS(line of sight)?

1 2239

what is VSWR?

1 3077

what is servomechanism?

1 4286


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Un-Answered Questions { Electrical Engineering }

What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

797


why do we not use equivalent voltage source in negative sequence equivalent ckt.

811


An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

981


what is through fault?

863


How many types oil using in transformer ? How many letars using in transformer..?

789






what is meant by rotating magnetic filed

703


what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

967


Why 1/3 is used in symmetrical components?

473


can we conduct the swineburne's test on a dc series motor? why?

672


3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

1338


ult of expression 'document.FrmQF.myem

812


WHAT IS ELECTRICAL MAINTAINTENCE ?

662


Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB

1480


what is transient enclosure vltage , very fast transients, very fast transient over voltages

797


how dose servo motor works

673