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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

1006

Why a Transformer Noise during its running condition ??

NTPC, UPPCL,

11 15992

How the Transformer oil testing is done & Why oil dielectric goes LOW & what is solution for that ??

NTPC,

3 9832

What is the Maximum Power generation capacity of a Synchronus Machine ??

ETA, NTPC,

1420

What is the Total Power generation Capacity in India at present ??

Bhel, College School Exams Tests, IBM, NTPC,

20 28662

What is the function of Lightning Arrester & Wavetrap in Power system ??

ABB, Bhel, Energy Infratech, Infosys, NTPC,

18 69411

Why Power generation in India is at 50Hz while in America its 60Hz so is there any advantage/Disadvantage of this ??

Australia Visa, College School Exams Tests, Fiat, InfoPlus, L&T, NTPC, TCS,

38 67260

which Machine u will prefer to use at place where Flammable gases are coming out & why ??

NTPC,

6 6659

Why Human body feel Electric shock ?? n in an Electric train during running , We didnt feel any Shock ? why

Lovely Professional University, NTPC,

13 40979

What is the formula for calculating Transformer Losses & Efficiency. I want to compare the Transformer efficiency at different loading condition.

Rays Power Experts, Techser,

6 153068

How can I calculate the trnaformer effciency at different loading condition?

2 2955

transformer losses

1 3022

define IDMT relay?

APGenco, Bhel, L&T, Shriram Finance,

15 84115

WHERE IS THE LIGHTING ARRESTER SHOULD BE PLACED IN DISTRIBUTION LINES?

APTransco, BARC,

26 30451

i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?

996


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Un-Answered Questions { Electrical Engineering }

solar energy light efficiency & disadvantages?

1084


what are the 4 rules to start the motor?

1212


What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

1331


What is the height of DA, DAL, DB, DC & DDE tower?

1122


following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

1225






why and where we use early make & late break contacts in protection?

6823


how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

1050


how to calculate

692


What is the drawback of class b amplifier? How is this minimized?

178


What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

923


i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

817


Which motor will you choose which can operate in both lagging as well as leading power factors?

194


The loads are connected with phase and ground then why current flow as the loads ?

1061


can i connect wavetrap in 2 different phase in EHV line?

923


What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

1052