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 different between Difnit time and instatous over current relay

NCC,

2626

an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 2527

is synchrnous pannel is need for two eqal rating transformers to run in parallel

1 3625

How to calculat the ratio of HT\LT in energy meter

2758

What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

2395

what is the highest voltage for transmitting electrical power in india

5 8449

how rectifier transformer work in electroststic precipetatore(esp?

2719

how to calculate current carrying capacity in power cable?

1 5511

checking procedure of capacitor based motors.used in fans etc?

Badve,

2179

draw tube light circuit

Badve, KPTL,

2309

I have a 5KVA UPS. Total load to be connected almost 3KW. Ordering a battery pack with capacity of 1920VAh. How long will the backup time be?

1 4156

why in a transformer frequency remains constant? if frequency is changing what will happen?

5 23680

SUTIABLE FOR ohm's law super conductor

1993

if the synchronizing b/w generator and busbar not complete and we close the out going circuit breaker of generator then what happen ?

4 5696

diffrence between windings of high tension side and low tension side of transformer

1 11070

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....

2072

What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

2204

How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.

4825

how to calculate the breaking capacity of different breakers.

2357

Describe Non I.S. Earth System and why is it used?

1850

how we can calculate power factor in single phase & three phase ?thank u

2049

How many devices can be connected in one zone of FACP

2361

List some examples of renewable energy?

1276

what is the use of piston rings in the engine used for a generator...........

2250

wat is the first thing dat is needed, 2 lay a cable in some area??

1919

When is lag lead compensator is required?

1176

In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

2263

What is the working mechanism of OLTC in Power Transformers????

4389

What is EMC filter in VVVF Drive ?

2780

What is “pu” in electrical engineering?

1195

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