Electrical Engineering Interview Questions
Questions Answers Views Company eMail

critically criticize the application of ring main unit in power system

176

why i can not use thimble on capacitor duty contactor

162

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.

166




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.

116

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,

224

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,

200

what are the disadvantages of low power factor

HMK,

176

how can we Increase the Value Of Frequency in electric circuits

HMK,

199




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

HMK,

219

how to calculate short circuit current for the busbar

HMK,

208

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

1 362

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

219

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

1 704

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,

1 411

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

279


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Un-Answered Questions { Electrical Engineering }

When color of silica gel will gets change from blue to pink from Top to bottom?

453


state the working principle of incondenscent tube?

818


completed BE & done apprentice at tneb & having experience 6 years. want to get c license. will apprentiship & BE be helpful for getting c license. will i get any preference by showing this?

414


how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?

853


What is the basic of DTH.

1055






what is inverter and converter

689


The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.

232


how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com

1500


whether fibre optic cable in high voltage earth conductor is used for protection circuits

526


If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive

654


What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2) 

1598


Is there any standard guidelines/Criteria to design NGR/NGT.?

1666


How much should be the load percentage for 15kva Inverter and Iinut & I output load with Calculations

826


Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

725


What is the main purpose of c.f.b.c.boiler

590