Electrical Engineering Interview Questions
Questions Answers Views Company eMail

critically criticize the application of ring main unit in power system

243

why i can not use thimble on capacitor duty contactor

226

Make a list of materials and layout diagram for a 35hp motor, to be wired at 35meter away from the MDB in a chemical factory.

FEWA,

240




Draw SLD for a panel has 500A Bus Bar rating, with 4 outgoing, each is 80 A (load current), showing the transformer and capacitor bank rating.

FEWA,

176

Draw SLD feeding from the SS up to distribution board of the load, calculate cable size, breaker sizes, and meter for the following case: Ground Floor: electric room, pump room, 5 shops, each is 15 KW First Floor: 5 shops, each is 15 KW Second Floor: showroom 30 KW Service Loads: water pump 3 KW (3ph) , fire pump 3 KW (3ph), and one DB service 12 KW (3ph).

HMK, FEWA,

277

Draw an S.L.D of the main panel for a hospital, showing meter position. Essential loads are: 1) Equipment load 100 KW 2) Critical load 500 KW 3) Life AID Safety load 400 KW 4) NON-Essential load 200 KW 5) Other service loads 200 KW Calculate and suggest the size of the transformer, size of main cable, capacitor bank, and calculate the capacity of an emergency load having above first three mentioned loads is supplied by an emergency generator.

HMK, FEWA,

266

what are the disadvantages of low power factor

HMK,

229

how can we Increase the Value Of Frequency in electric circuits

HMK,

256




Give accurate definitions for these electric terms: Inductor Inductance Inductive Induction Reactance Reactive Esam Baraka ٢١ ساعة

HMK,

281

how to calculate short circuit current for the busbar

HMK,

268

What is main purpose of chock coil and starter in florescent tube ?

1 447

What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB

277

7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in parallel with 30ohm resistor across the same supply, the current drawn becomes triple of original one The unknown resistor R is

2 1324

What is duty cycle for HT motors? How many start permitted if mentioned as 01 for hot and 02 for cold per duty cycle?

GVK,

1 515

Purpose of providing neutral isolation panel for parallel operation of diesel generator

345


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Un-Answered Questions { Electrical Engineering }

how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

760


If we want to change a contactor of faulty one what are the conditions want to fullfil

909


i want to know that what is the eligibility critaria for ongc exam?

1879


Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

1087


As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

555






How they LT panel busbar size choose

627


How to calculate the fuse rating depend upon the DC circuit?

1667


What Maximam Gap Taibaar & Bush

1147


how to generator maintenance (A Check, B check,Etc)

1122


detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

1857


What is the need for a controller?

3


what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

1114


Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?

644


What are the function of different components of servo motor?

902


why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

758