Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the power factor

Heidelberge Cement,

13 12810

what is the operating principle of contactor(power).along with disection?

NASA, Tech Mahindra,

3 16322

in india why we not use frequency above 50 hz for distrubuting power ?

1 4301

howmany types of compresor is there? and how to calculate compresor capacity?

3 5164

how to calculate generator capacity?(kva)

SMEC,

2 18669

flush point of transformer?

2 4066

Hoe to calculate body earthing conductor size ?

IES,

1 8729

how can alculate the apfc panel rating?

3 14241

why are using bus ducts ? why not using cables

12 46207

How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

1436

what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?

1546

WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

1762

why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

4 7468

Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.

2 4190

GIVE CONDITION FOR MAX EFFICIENCY OF 3-PH TRANSFORMER AND D.C MOTOR

BARC,

2 6535


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Un-Answered Questions { Electrical Engineering }

Explain the method to keep noises low in a control system?

772


what is protection class current transformer.

3617


What kinds of decision are made about CT from it's Knee point(voltage & current)?

4148


Why efficiency in thermal power plant is low?

776


How to calculate phase to phase difference ?

1828






how to calculate percentage impedence at 75 deg C at normal tap

1913


why ss stablity limit is more transient stablity limit?

1791


While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

1740


Transformer diagram mention each parts ?

1705


sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

1767


how is capacitor bank look like

2031


how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

1500


temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%

1613


what is strip power factor?

1784


Write a note on Treatment for electric shock.

1530