Electrical Engineering Interview Questions

what is meant by carrier aided trip protection in transmission line

GE,

3363

A 400KVA Transformer has 400Hz frequency.if frequency is changed to 50Hz,then what will be the new KVA rating?

ABC,

2831

Transformer Parallel Operations

3408

Why neutral is not used in three phases dol starter

1484

What is the comparison of PILC and XLPE cable

1565

What is BusBar integrity test and how it is conducted?

1657

How to Calculate Transformer Earthing Electrode Rod Size both Body and neutral Earthing ? Any Standard Formula? Please Suggted

1203

How To Convert Apparent Into Real Power Without Knowing Reactive Power?

1334

what is there inside an inverter and how it works?

1348

what is different between phase and netural

1547

How to calculate multiplication factor in kva example 500kva ans pls ?

1432

A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?

1404

How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?

1273

Which capacitor is used in ceiling fans ?

1978

ht side line to earth voltage

JLL,

1126

Un-Answered Questions { Electrical Engineering }

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1675

how do you test tachos and servos

1685

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

1860

234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

1635

rajha power sector details

1584

1179

what is the function of gss in the dg set.

1527

why core is useful for a transformer ?and also in its operation ?

1640

How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?

729

Why use the vcb at high transmission system ? Why canâ€™t use acb?

846

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

2024

explain the functions of main isolation switches

1253

how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

1625

What are the components of feedback control system?

673

why there using acb enclosure in big buildings

1616