Electrical Engineering Interview Questions

we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

1292

if There is Short circuit in Power Transformer, what will happened to Buchholz Relay.?? How Buchholz Relay will respond.??

3284

how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

3170

why we use 11 kv 22 kv and so on ?

4129

what do you mean by partial discharge in cable

2541

how much current capacity of 300 sq. mm cable (4 core aluminium) and 150 sq. mm cable ( 4 core aluminium)

27441

how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 times in a night. and what are the steps to short out this problem

4435

What is the difference between power,voltage,current? and with example

4081

How to calculate the copper in HT motors if KW, RPM & Voltage is given

2581

Can you any explain about active,reactive and apparent power in power system with example.

2054

HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

1675

In UPS, battery connections if parallel connection given, what will happen?

3704

Why earthing done?

CBRE,

4439

What is a fuse? How does it work? What are materials used?

1515

3) How earthing is done? How it measured? Write the method for earthing? How the earth resistance is kept low?

4200

Un-Answered Questions { Electrical Engineering }

How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

1746

What is meant by harmonic distortion?

656

What are different types of control systems?

725

How much load can be taken for chiller from 1500 kva transformer

855

where does 22kv line starts

2657

Q: How to calculate Transformer losses , tell us by Formula.

1500

How to measure the Harmonic Distortion of UPS ie THD?

1730

Is there any type of starter for DC motor other than two point,Three point and Four point starters?

1646

how we can do the insulation on secondary of ct explain and so that tan delta will within limit

1440

What is the Nyquist criterion regarding control systems?

648

What is notching in dc machine?

1492

What is the difference between Encoder and Resolver?

2875

how much UPS neutral erath leakage current.

3112

How can calculate the rating of a servo stabilizer for given a specific load

3059

what causes contact chatter when there is no demand on the air conditioning unit?

1605