Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how i calculate the size in mm of the LT 4 core cable for 100 HP inductive motor pump

1 1443

If u take a kWh reading in 11 kV HT and 440 LV side at same time in yesterday today , then why LT consumed units 3-4℅ high as compared to HT units

Brigade,

1 1641

why ac wave is sinusoidal not square or triangular wave what will be reason

ACPL,

1 1460

what is reason in mv breaker the control supply voltage is dc not ac?

1 1858

what types of cable used in underground coal mining?

1045

condition Autotrip facia come on control panel of electrical transmission line?

Getco,

1080

How to calculate capacitor bank size at a load 800kVA.

1157

what are the reasons of CT circuit faulty in busbar protection scheme?

Getco,

946

Generator,motor and alternator Working principal Please explain easily

987

From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer

922

What is the current carrying capacity of 35sq.mm flexible cable?

1027

What is the technical difference between On delay timer and a Star delta timer?

Roche,

935

how electrical earthing maintenance done in industry?

L&T,

1015

dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

961

why we are not giving the zone 1 trip command to the master trip relay

1070


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Un-Answered Questions { Electrical Engineering }

What is the maximum percentage voltage drop (vd%)for a motor control center

1535


What is oscillator circuit?

669


Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics

1859


I Just want do EHS Certified Certification Distance Course From Govt approved,so can any body provide me details.

1680


Hi I'm doing my MBA(3rd semester).I applied for the post of ET conducted by BHEL the last year.I cleared the written and lost in personal interview.Again I wrote the exam this time and cleared the written n yet to take the personal interview.Shall I disclose in the interview about my studies.What shall i say if they ask about my change from studies to job

1635






In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

1868


What is an 86-P or an 86-A trip

1564


Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1563


hey guys i scored 910 on GRE and 67 on TOEFL respectively.I have an aggregate of about 74%in my B tech.For which colleges should i apply for an MS program in electrical engineering.I am looking for colleges in NJ,SC,NC,GEORGIA, NY. Please reply with a good response.....

1531


What are the temperature elements?

699


A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

2361


i need previous entrence exam papers of nhpc.

2347


What is the lifetime of a Thyristor? Is there a recommended lifetime for thyristors after which they should be replaced?

2196


how to calculate the step resistance for slipring induction motor,how you deside the no of step for that?

1638


List few applications of d.c series motor?

691