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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

if we increase frequency of line, then how will string efficiency varies with it.

2 13104

Dear all, Can anybody tell me that how to choose CT for a specific load? I have a 200kw induction motor, which ratio CT should be installed? Is there a formula or calculation that determines the CT ratio for a load? Regards.

2 6476

How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

2433

what is the difference between control transformer and Potential transformer (PT)?

1 4477

is 3-phase induction motor need a starter ? why do it so

Coca Cola,

5 8140

what is the use of the circle diagram

2 5625

what is TRCC

2 15650

How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?

2118

what is brushless generator?

Jk Tyres,

2 5333

Can we perform parallel operation of two transformers when one transformer on load?

3 5255

dear all, can any body explain that how to select an induction motor for a specific mechanical load(inertia). is there any formula or calculation then please give me. i shell be very thankful to all of you. Thank,s and Rgard,s.

1 3131

why secondary terminal of current transformer should not be open circuited?

ABB,

4 10526

In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

2 4258

Will an earth leakage trip be activated if the component or wiring is faulty on low voltage equipment.Example An electrical Cat Scarer placed in the garden and water gets into the wiring.

1868

which type of motor is used in lift ?

7 11209

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Un-Answered Questions { Electrical Engineering }

How to calculate ant test the burden of Current transformer

2455

What is the difference between indoor and outdoor transformer

5931

What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

2668

What must be the distance between the Earth pit which are grounded from two different sources. Example: Distance between the earth pit for LV Panel-1 & 2

2082

Explain cmrr?

1134

How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

2174

Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

1653

What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?

3746

I want definition for ABT Meter (Availability Based tariff) ?

2008

what is transient voltage?

2253

What are the functions of different probes used in cro?

1200

what rectifiers is and what are the types of rectifiers?

1155

What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

2079

If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

2290

HOW can i REuse the fused MLL LAMPS & GLS LAMPS at our factory

1904

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