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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Brushless excitation of synchronous generators and motors

AMIE,

2 2460

describe the Operation of induction generators from bus bars

AMIE,

1296

why 1.7Uo for HV cable Hi pot test?IE standard why?

ABB,

1342

why single phase to grd test in HV cable?why not 2 phase at a time?

1300

why impedance test in power cables?

CSE,

1 2328

why PD testing for power cables

Bhushan Power Steel, CSE, Datre Corporation,

1 1880

use of automatic voltage regulator & input voltage of it?

1 2302

Can we use HRC fuse inplace of semi conductor fuse ? What are difference between them?

3 23106

What is the difference between ELCB and RCD

7 14951

Why is the electric shock from the DC supply is more dangerous than the shock from AC supply.

IBM,

8 8057

When a 25kV line touches the train, will passenger get shock?

3 4881

why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?

952

Is it any dc fuses availbale in market? can we use one fuse for both AC & DC ?

6 3830

what should be the no load current of an induction motor

2 3916

What is the major difference between P.T. & C.V.T ? Why CVT is used in HT Transmission line in place of P.T.?

APGenco, OPTCL,

13 99068


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Un-Answered Questions { Electrical Engineering }

What is the difference between Encoder and Resolver?

2329


how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

1297


I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

807


at which voltage level arcing ground is occurs ??????????

1066


1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

1612






what is droop control?

1108


In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

1318


Sate maximum power transfer theorem?

172


Determine a suitable number of slors and conductors per slot for the starter 1 winding of a 3 phase, 3300 V. SO Hz 300 rpm alternator. The diameter is 2.3 m

1702


what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.

484


draw 3 phase rectifier diagram

1141


We have a distribution transformer of 750KVA/11kv/440v and an AVR (Servo Stabilizer) of 750KVA on the LT side of distribution transformer. Also we have an ACB of 1200A on the output of distribution transformer (that is on the input of AVR). We want to have an MCCB on the output of AVR. What should be the rating?

1024


What is the difference between resistance grounding system and resistance earthing system?

159


Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

1367


I want to merge a cable..in between two metering Cubicals which contains CT's and PT's and Energy meter..before taking merger..what are the common things required?

699