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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why we generate transmit and distribute electrical supply in multiple of 11

NHPC,

6 12151

why t/f are rated in kva. is it conserned with p.f.

3 5650

Why X'mer rating in kva only?

4 7244

Transformer/insulating oil tester(BDV tester)

1 4392

Hysteresis loss in a core is due to what reason or property of the material used for that core?

1 4599

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctance property?

2 5655

how slip power recovery system work

Ambuja,

3027

Is there any other method of damping the oscillation in a synchronous motor other than using damper winding and if yes what is it?

IOCL,

2 5973

How much current can carry the 1 sq inch super enamelled copper wire?

4 7114

as we know that N=120f/P speed of an im can be controled only through changing no if poles, can we control by changing the frequncy????

JSW,

7 10659

difference between torque mode and speed mode

JSW,

4 12182

diff. between tension mode & speed mode

BSL,

2336

my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

1 6938

i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

2155

whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11

1866

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Un-Answered Questions { Electrical Engineering }

given data are load current & power factor cable core size? plz any one update the calculation formula

1895

1.what is the reason for transformer and lightning arrester blast in 33kv system

3093

Why is voltage is required to be within permissible range for an electrical equipment?

1703

how diside ct mf exmp.200/5 ct

2190

what is the role of transistor in Circuit?

1189

i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

2341

i have a 1500kVA transformer what is the kWH meter i need to use?

1788

explain with diagram how to protect transformers and substations from over current with help of CT's?

1954

How are load losses and no-load losses measured at site in a DG set?

1750

What is the difference between AC and DC injection methods for rotor earth fault protection

2226

What should be the protection scheme for a 15kw, 3-phase motor working in a lathe machine.

2066

Can we use 230VAC, 63A MCB for 120VAC, 63A supplied heaters load?

1483

how to select rating of HT Panel

1453

how to carried out tan delta test in 11 KV alternator ?

3073

What is the function of attenuator in cro?

1199

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