Electrical Engineering Interview Questions

How to calculate the current carrying capacity of electrical cables

162359

how to calculate the loss tangent of electrical cables

810

what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

787

why are use star delta startor.

14381

why AC cannot to be stored and DC cannot be transmitted?

IBM,

28673

what happen to the voltage and current in all phases when an earth fault occur in a phase in three phase three wire system(delta connected)...

3165

if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

TCS,

14447

How to select Main CB Rating for 187 KW Load?

6477

What is the Surge suppresor? Why using in a UDB's and How it works?

896

I have 725KVA DG set how to Calculate the Ratio of KWH? Whatb is the Formila

HCL,

20490

How to calculate the CFM to TR? What is the Formula

85535

what is efficient load of transformer in percentage

3494

why we use to transmit the power in three phases intead of single phase ?

5338

Explain the working principle of Synchronous Generator and Assynchronous generator?

890

How many Cylinders are there in Diesel Generator?

3344

Un-Answered Questions { Electrical Engineering }

I have experienced electrical maintenance HT ,but I completed be ECE ....can I apply c license or not ???? Pls help me friend s...

380

how is the incoming cable size calculated for a given current rating of a panel??

675

when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?

741

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

756

1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

1397

if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

762

PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

674

what are problems caused by the pdu in rack server

743

Lt motor sfu flashing reasons?

487

what is charger supervision and control supervision?

733

how slip power recovery system work

1612

We have two parts in generator, electrical & mechanical. how it works?

763

If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.

210

What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

990

What is power factor why we should maintain the power factor unless what will happen

416