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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is master trip relay? How does it work?

1 4423

What is the difference between PLC & DCS?

Power Plant,

1 1467

What is the instrument to check the rotating diode fuse of alternator in running conditions?


why in dc generator field rheostate kept in maximum position?

1 3029

What is Harmonics how it is produced and what is the method to control the same



Why dc voltage used to excite alternator field in stead of ac?

4 5080

why voltage rating of transformers are in multiples of 1.1?

3 3746

what should be distance between phase to phase in 415v system?


1 4490

can we correct the p.f.of ac generator?


2 4025

What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 3542

In a poly phase circuit if clamp on meter shows same load on three phases and their sum on neutral then why we use three and a half core cable or maximum the same size of core as that of phase?

1 2192

how to determine kilowatts (real power) is used in energy meter? is it apparent power effect the disk rotation?

1 2181

When will you multiply and devide with derating factors to the actual value while sizing the cable?


why we are used armed coble for wiring of 3phase motor?


3 3414

how to improve my communication skills

Infosys, MAHINDRA, Wipro,

7 6102

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Un-Answered Questions { Electrical Engineering }

what is difference between line differential and transformer differential?


Whether the vacuum contactor requires Short circuit protection?If No,why?


what is mean by transition resistance of transformer?


Is it acceptable of installing an earth pit in planters area where bare copper cable, earth rod and connection are susceptible to corrosion due to water?


Explain about Dubai electrical sysaem? Explain about Dubai drinking water system? Explain about Dubai Burj tallest building Electrical,Water.etc.. maintenance system?


While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x


What is the physical significant of power factor?


what is DRP panels?


Define branch?


What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?


why does make gain margin and phase margin on same plot.?


tell me about eletrical contractor


define displacement & magnitude ?


What is d main advantage of using double circuit 3 phase transmission ?


What is the difference between Droop vs Isoch Control?