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Electrical Engineering Interview Questions

What do you mean by isolators and circuit breakers?

15835

explain all the classes with example

1075

how to calculate micom relay earth falt time and current sertting

1228

why DOL starter is use in induction motor as it is not reduce the starting torque

4756

Dsitrubution transformer minimum IR value

2472

advantage of using 110v than 230v

NTPC,

4581

3 ph motor connected in star delta starter. when we start the motor it run in star but when in is going in delta it trips the main incoming supply. why?

7830

In 63kva LT Distribution Box Why the outgoing of 63A kit kat is connected to 200 A link disconnector? as the output of kit kat is only 63 A?

2856

the fuse is use for protection against overcurrent but at normal condition it carry the rated current then how single thin wire carry this current without melting

2739

why rating of transformer is in kva instead of kw?

3673

what is inverter

Bhel,

8963

Dear Sir how much cable size required from 0.75 kw to 50 kw for electric motor or pump

4824

We are getting supply at33kvand it stepdown to 11kv.So Our requirement is 11kv voltage.why we draw 33kv from the grid instead of 11kv?

3229

Why transformer ratings in KVA not in KW?

ABB,

6955

We store the d.c supply...then why can't we store A.c supply???

6404

Un-Answered Questions { Electrical Engineering }

Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?

1338

What type of a DC motor would you use for a lift?

263

Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

2892

what is circuit recombiner and how it is different from circuit breaker

998

please describe the Transformer setting, Motor setting, I/C setting, Tie setting

885

How to set the relay,,??

1251

What is difference between insulating medium and fault current interruption medium in a switching device.

661

Type of motor stater detail and working detail

888

What is nichols chart?

254

ROC converges if poles and zeros lie inside a. Origion b. Z=1

1213

how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

986

What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

691

Define thermal resistance in the context of power amplifier.

218

what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.

1258

Earth has zero potential then what would be the neutral potential ?

519