Electrical Engineering Interview Questions

Send the control circuit digram of a star delta stater?

L&T,

5622

what is distribution board and panel board

15608

how the ac voltage are selected like 220v,415v,750v,1000v& 1.KV,6.6KV,11KV,33KV,66KV,132KV,220KV & why these are selected like these orders

8337

Which one is correct mVA or MVA. Whether both the units are same for the transformer

13476

how c-curve of mcb's actually looks alike?

1534

Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend

1552

How do you commission a power Transformer?

EEI,

8816

Why alternators are designed at 0.8 pf lag?

6524

In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

3166

What is the difference between IS:1554 (Part 1)/1988 & IS:694/1990 ? What do these two standards specify about?

19022

what is use of starter motor in DG ?

15315

which type of motor is used in automatic swing gate

Sail,

1615

how much excitation voltage required to generate 1mw power?

1654

define excitaton voltage and excitation current?

32939

define stator,rotor,excitor,rotating rectifier in generator?

13455

Un-Answered Questions { Electrical Engineering }

how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it

1541

How they LT panel busbar size choose

1312

why ct ,cvt should be stored in a vertical position?

2186

How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?

944

What is meant by coupling capacitor?

699

A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

561

WHat is the general checks required for Dry type transformers

1695

ht side line to earth voltage

1126

in 132kv substation CRT means

2251

What is the difference between amorphous core transformer and CRGO core transformer?.

3227

What type of DC motor would you see for a lift?

704

what happen if the parallel generator phase angle shift by 1 degree in manual mode

1621

What is Auto Mains Failure Panel & Auto Synchronizing Panel

1495

What are books to be referred for KPTCL exam?

3278

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1091