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 is the difference between AC Drive and VFD?

ITC Infotech,

10 24933

1. what is difference between VCB and ACB.how its works please explian.

ABB, Accenture, HP, Minda, Mother Dairy, Satyam Pharma,

6 75169

if HT side voltage is high current is low . and LT side voltage is low current is high please explian.

HP,

5 23992

what is electricity.

HP, L&T,

6 8888

what is maximum demand.

HP,

9 25770

if 20 hp motor starts directly delta connection.motor what will be the effect.

HP,

3 7159

if 20 hp motor starts directly stars and contenious run . what will be the effect.

HP, Ohsung Electronics,

11 21667

star delta connection used in reduce the starting current at 3 times . how its reduce the current please explian .

HP,

7 28067

what is on line transformer and off line transformer.

Cisco, HP, ICC,

3 8623

what is electricial and mechnical interlock.

Control Dynamics, EFS, HP,

9 68470

please explian how may types of maintenance works.

HP,

4 10032

what is safety measures of alternator.

HP, MNC,

10 32855

what is main parts of alternator.

HP,

3 15669

what is safety measures of transformers.

Amtek, Hotel Jobs, HP, RMU, SKFM, Taj Group,

16 71217

if AVR fails in alternator. what will be the effect.

HP,

13 29435

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Un-Answered Questions { Electrical Engineering }

How to Make relay co ordination chart for a Electrical power distribution of a plant

3895

What would be the size of wire used for 2 Ton of window A.C?

1969

. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

2235

What is open delta Xformer? It's adavntages & Use?

2286

What is the de rating factor of cable? What is the importance of the de rating factor in cable select

2448

For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?

2006

I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

1954

In layman terms, what is the difference of Dielectric strength and dielectric constant when speaking of an insulating oil

2777

How does PLC work for sychronising of Two or more DG sets?

2132

what is PID control in VFD drives?

2072

how to increase senstivity of ct

2481

How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?

4114

What is inrush current? how can calculateit? what is the affect of it?

2110

Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.

1839

I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.

2682

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