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L&T Electrical Engineering Interview Questions
Questions Answers Views Company eMail


6 5830

why PT transformer primary r the grounded?

2 4661

why r use the wave taper in the substation ?

2 3697

Why r use in the tap changing x' mer.

2 4412

Why we use stones in switchyard?

2 7173

Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ? 2) Why ups required dedicated earth?

8 15750

what do you mean by earth fault in transformer?

2 15057

why the Different manufacture's rating of Gas genset are different? i.e : cummins genset rating is in KVA .( 625kv). While GE- Jenbacher make genset have rating in Kw. (625 kw)

1 2457

if neutral earthing is weak of a system then how can we improve it ? Technically explanation ??

1 3659

sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: al.cable is withstands for how many amps? is suitable for 45kw motor?

5 9452

What is the problem, if a circuit breaker is not closing.

4 17013

1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 4884

in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter


what is the difference between 3 phase 3wire &3phase 4 wire meter?what is the advantage of 3p3w over 3p4w?

1 14177

Why should we use Star-Delta connection in step down power transformers?

7 16136

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L&T Electrical Engineering Interview Questions

Un-Answered Questions

What does window.print() do in Javascript?


What is mean by Data Driven framework in QTP? Can any one answer me in details on this regard.


interface an 8-pin switch with 8085 microprocessor located at 0AAH and LEDs at port 55H, draw the circuit diagram. Write down a program to read the switches and do the following: > if the parity of the switch is odd, start counting upward until it reaches 0FFH. > if the parity of the switch is even, start counting downwards until it reaches 00H.


What cmos is and its benefits?


If the variable $var1 is set to 10 and the $var2 is set to the character var1, what's the value of $$var2?


Can we include one component to another ? : salesforce lightning component


What is the role of union all and union


How is the pricing of consignment stocks done?


How do I clear contents in excel without deleting?


In horses coat color is dependent upon genes as follows: A_B_ results in bay, aaB_ in black, A_bb in chestnut, aabb in liver. In addition, palimino is derived by Dd with chestnut. A palimono stallion (DdAAbb) is crossed with a palimino mare (DdAAbb). What percent of the offspring will be palimino?


Which is better django or php?


What happens from the point an HTTP request is received on a TCP/IP port up until the Page fires the On_Load event?


What is an excel array formula?


Are callbacks asynchronous?


Do you know how can we check the value of a given variable is a number?