Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why a ballast and ignitor is required in MH and other lighting fixtures

Future Group,

2 3886

1.why ACB is not connected in HT side what Happens? 2.how much voltage maintained in ACB breaker? 3.OLTC is connected in primary side in case secondary side connected what happened?

L&T,

3 7468

i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?

1577

what is the diference between base speed and rated speed in motor

Bhel,

1 4656

what is the generating transformer?

3 5464

In a panel 2500A ACB is the incoming breaker then what is the size of the bus bar?

1 5806

What are the types of bus duct?

1 2210

what are the advantages and disadvantages of oil filled cables over XLPE cables

Areva, AUVA,

3 17931

Which of the following are the important limitations of rod gap surge arresters? 1. They are not capable of selling off power frequency follow up current. 2. After a discharge, the rods are destroyed completely. 3. Performance is affected by climatic conditions. Use the following codes for selecting the correct answer. Codes: (a)1, 2 and 3 (b)1 and 2 (c)2 and 3 (d)1 and 3

1 4684

The speed of a dc motor can be controlled by the variation of 1. armature voltage. 2. field current. 3. armature circuit resistance. 4. angle of brush shift. Which of the statements given above are correct? (a) 1,2 and 3 (b) 2,3 and 4 (c) 1,3 and 4 (d) 1,2 and 4

1 2842

what is two point starter?

SGF,

1597

what will happen when ac is applied resistor,inductor,capcitor?

1 3685

how do you measure earth leakages in 3phase wires?

2 4023

How is Grounding or Earthing achieved in Planes and Automobiles?

ABC,

3 6654

What does CDG,CDAG,CAG,VAJ,VAJH,VTT,VAZ,VAA etc. stands for in case of relays and can anyone answer to decode this codes C,V,D,G,A,X,TT,J,JH etc

HNL,

4 65899


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Un-Answered Questions { Electrical Engineering }

explain different types of d.c motors?

674


Explain about how is it working Earth fault'relay and wahts the resistance value of earth bed

992


High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?

1602


Define the overload capacity of the motor?

1553


How to calculate the heat load for a electrical room

2570






In MEP Services what are parts of STP and what are there function?

2892


why current flow to the opposite direction of flow of electrons???????????

1654


What is lifting power for 1 wb/m2 and 1 A magnet?

1654


can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you

1544


What are the disadvantages of autotransformer?

628


how to design coil turns ?

1505


How to calculate Air conditioning capacity for a telecom BTS shelter?

3013


Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

1703


HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2113


Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com

1219