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Electrical Engineering Interview Questions
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For these 2 devices what their power ratings are ? 1) single phase : AC 220V & starting amps 3Amps (i.e. starting torque) and the stabilized amps 2A ... For deep freezer 2) single phase : AC 220V & starting amps 2.7Amps (i.e. including the starting torque of a CRT monitor) and the stabilized amps 1 Amps thanks

 1 2582

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

 3 3782

how many ampere Maxmium load given on a 10 kva DG set?

 3 6416

Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

 1535

If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

 1735

What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?

 2156

how to find out this one mcb r mccb?

L&T,

4 6047

how to identyfy cable sizes?

IAF, Mylan,

4 5759

What will happened, if field voltage change with 220 voltage to 110 voltage for a dc shunt motor?

 1 2604

what is the deference between watt and KVA

IAF,

3 4645

what is the difference between phase and neutral?

IAF, Indian Airlines,

3 6181

How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

1724

How much minimum insulation required between 11kv/3.3kv transformer windings?

Descon,

1971

what is Use of Stones/Gravel in electrical Switch Yard??

Sanghi,

4 14777

How to find synchronous motor speed formula Ns=120f/P ?....

Cranedge,

2 21464

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Un-Answered Questions { Electrical Engineering }

What is boucholz relay and the significance of it in to the trformer?

664

at which voltage level arcing ground is occurs ??????????

1577

What is mean by Sensitive Earth fault & what are the effects

3746

how can we say that stator magnetic field rotates with synchronous speed?can we derive?

1304

Draw transformer phasor diagram.(full load,no load)

3693




why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

2388

what exactly commisioning work does in electrical site work... LT side?..

1498

WHY CBCT USE ONLY IN Y PHASE NOT OTHER PHASES

1624

how do we calculate length of starting time and repeated starting of a direct online starter?

1545

what is meant by residual over voltage & residual earth fault ?

8429

What are the advantages and disadvantages of the ac motors?

620

how the B-H loop obtain under the static condition

1817

What are IR values and what it should be for coil and for insulator

2514

what is the chemical name and formula of refrigarent R-134a.

1776

The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1475

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