Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What should be the minimum and maximum ohmic value for earthing?

2 6120

As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

2 5206

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

6 10017

How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

3 7794

Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV,20kV, 30kV?

Bhel,

2 7694

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

4 10380

Explain why the Voltage drop will happen in 3 Phase line?

3 7715

What is the equipment used to control the generator output?

3 5960

What are the factors to be considered during the Synchronization?

3 6908

What should be value of Circuit breaker operating time and tripping time?

5 15066

Why the CT Secondary is rated as 5A generally?

2 5909

At which time Synchronous generator act as a Synchronous Condenser?

1 6616

What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

2 8072

What are the protections to be used for Generator?

3 6329

Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

3672

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method

1844

What is icu and ics in Acb and how many time icu or ics passes from breaker?

1557

testing of Vector Group – YNaoD II

2929

What is current divider rule (cdr)?

1341

Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing

1954

1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks

3373

A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1918

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

2366

What kind of preventive maintenance are there for transformer?

2274

For electrical designers what are the standard should know? i want learn about this standards. how to get information/reference. anybody help in this regards please.

2137

what is booster? and how it is connected in a circuit?

2617

What are the main significances of root locus?

1233

Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com

2110

How does the slip regulator works as a startor

1969

Explain the operation of grid connected central solar inverter ?

1538

For More Un-Answered { Electrical Engineering } Questions Click Here