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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

We in my plant one of the transformer showing neutral to earth voltage is 22V how to solve it

3 5586

why voltage swells and dips in transmission line?

2 6824

why transmission line towers are longer than communication line towers?

3 5398

WHAT IS IEC? & WHAT IS BENEFIT TO PRODUCT FROM IEC?

BMC,

2089

WHAT IS MOBILE SUB-STATION? & REALLY BENEFIT IN INDIA

BMC,

2035

why in some cases the receiving end voltage is higher than the sending end voltage in transmission line (called 'Ferranti effect') ????? whts the reason behind tht???

3 7518

What's an AVR? What's its purpose in Generators?

4 7089

Hi If connecting a temp generator 670KVA .415kv with step up Tx .415/11kv. I am given Generator impedances Z1 Z2 Z0 to 100MVA base. Do I need to work out the generator fault current by using these impedances i.e gen rating / impedance. Then use this as my source impedance for the calculations that follow.

2001

How to run a three phase motor into single phase........

Oil India,

1967

what is voltage gradient?

Bhel,

8 36560

1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 12997

How can we Run three phase motor when only single or two phase supply is available ??

3 5919

what is the affect of earth's magnetic field on the frequency used in aircraft???

1966

Why nutral wir used thinner than phase wire

3 6502

Which is is best option for 33 kv line incomer.I am Desinging the panel for new projects and i would like to get Your opinion on this Vcb or sf6. Please help me with your replies. Thanks D p singh

6 7757

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Un-Answered Questions { Electrical Engineering }

What are the advantages of a three-phase system over a single-phase system?

1066

mccb service sittings be done?

1752

why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?

1464

in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

2307

What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

1832

Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

2156

What will be the effect of circulating current in HT xlpe cable when both the armour ends are grounded. Will the termination fils after some time in case of 33 kv supply.

2037

what is model question rrb junior engineer electrical gr.II

1905

Compare salient pole and cylindrical rotor machines.

1847

For overhead protection we use which transformer?

2429

A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1967

What is notching in dc machine?

1958

what is the difference between earth leakage and earth fault?

2261

WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

1839

please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in

2214

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