Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how much current take 16sq mm Cable

2 9114

how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

Vatika,

2376

how to select electronic timer(Star-Delta) setting for diff. rating motors

Getrag Ford Transmissions,

1449

what is the working principle of soft-starter & how it diff. from VFD ?????????

L&T,

5 20885

what is the purpose of %impedance for transformer

3 8598

does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain

1395

What effect of supplying stationary generator (800kVA) with 415V AC from 1500kVA transformer?

2 3719

what is meant by VFD ?where its useful ?

7 9182

What is the SCR system in drilling rig.

Weatherford,

2 14679

What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

NFL,

1572

why use only sf6 circuit breker in 400 kv sub station

BARC,

5 6840

What is differance between Slip ring motor and Squirrel cage Motor ?

2 5502

The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

1477

What is Single Phasing fault???(not single-phase fault)

ABB,

6 15893

What is the difference between electric and electronic circuits?

11 24576


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Un-Answered Questions { Electrical Engineering }

How would you calculate power loss in a resistor?

620


what is the formula of starting current of 3phase and 1 phase motor???

1712


TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?

1561


What are the common sources of energy?

616


How to synchronization will be done between two DGs ?

1303






which type of effect of turbine and generator reverse power protection ?

3750


What is precision of a measurement?

668


What is CCT (Correlated Color Temperature) ?

1495


what are the advantages and disadvantages of oil filled cables over XLPE cables

17998


If we connect a motor and generator together (I mean that the generator gives the motor electricity and the motor gives the generator movement) regardless the losses. Will the generator still generate and the motor still move?

1694


what is the meaning of the symbol << >> put in transformer drawing

1442


In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

1595


what is meaning of sympathetic tripping with respect to relays and give the values for current carrying capacities for copper and aluminium cables from 16sq mm to 500sq mm

4354


Pl. share your experience about industrial-electronics repair of machine tool.

1443


State the frequency for rc phase shift oscillator?

578