Electrical Engineering Interview Questions

Do u know any one? how to find out in motor rated amps? formula?

1546

Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise,give with best examples.... please help me in this regards....

1986

What is reason to get a power factor nearly zero in resistive loads

3139

why square root 2 is multiplied with line voltage in selection of LA ie 11/sqrtroot3=6.35 kv and it is multiplied with sqrt2 ie 6.35 KV*sqrt2=8.9 kv we will select 9kv.my question is why we are multiplying with sqrt 2?

KSPL,

3761

Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.

1314

Reason of secondary of ct always short

4630

If Three Runs of 1Cx300 Sqmm Cable between Transformer and VCB and the distance between 100mtrs. what will be total length of Cable and if cost 1500Rs per meter,what would be the total cost

2729

For Bus duct hi pot test, where we want to connect the return and ground leads?

3822

Is KCL applicable for close circuit?

Toto,

6392

why ht line fuse wire is so thin

DLF,

9551

A wattmeter is marked 15 A/30A, 300V/600V and its scale is marked up to 4500 watt. When the meter is connected for 30A, 1600V, the pointer indicates 2000 watts. The actual power in the circuit in

10233

how to calculate transformer turn primary & secondary side 11kv to 420v

1790

how to give earthing in ships?

2699

1216

What is FTA card? How it works?

1741

Un-Answered Questions { Electrical Engineering }

What are the different types of LT Cables?

630

Why MCCB is Getting tripped sometimes when there is no load in the Midnight ?

1404

what is the function of Moulded case circuit breaker, why it is called Moulded?

995

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

1768

Why efficiency of generator is higher than motor at a particular load?

1631

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1420

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

1013

Which material is used for the core of a transformer and why?

613

What are PLC leader logic program method

1275

What is deference between MCB & MCCB & ISOLATOR

1484

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

1633

What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

3443

how to calculate the no load current in transformer?

1988

What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)

1721

What is the function of electron gun used in crt?

606