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Electrical Engineering Interview Questions

why we use capacitor in lighting fixer

3270

why we use choke in tubelights nad other lighting fixer

2973

what is the purpose of ignitor in lighting fixer

3499

how can we calculate the current

3355

Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line; i.e. the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The maximum value of n1(P) over all configurations P of 19 points in the plane is 18

TCS,

1255

15 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true? A. All the suspects are lying. B. The leftmost suspect is guilty. B only

TCS,

9533

54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?

Bajaj, TCS,

1375

what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?

1733

What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

1127

how to calculate earth resistat in earthpit with earth testing kit?

3634

What will happen if the 50HZ Transformer is connected with 60HZ power Supply

6680

What will happen if 40W and 60W Bulb is Connected in Series.

8455

I am gokul. i finished B.E(EEE). I have 2 years experience in maintenance. But now i have not job, so i am searching. i want any effective courses in Electrical field with related to job and good salary. any one will help to me. please tell?

3526

i asked a funny question in Electrical ohms law V=IR in const temp voltage is directly proportional to current Power p=VI cos@ in that formula Voltage is indirectly proportional to current Try to give me the fact what is happening in Electrical.. contact Thanigai_1984@yahoo.co.in

9485

WHAT IS OLTC OF TRANSFORMER? WHERE IS ITS USED EITHER ON PRIMARY OR SECONDARY SIDE OF TRANSFORMER?

4473

Un-Answered Questions { Electrical Engineering }

why we used dc supply for field in dg set

1432

we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards

1168

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

805

How DC earth leakage currents can be reduced ?

1070

How does PLC work for sychronising of Two or more DG sets?

1177

Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.

893

If a high resistance fault occurs,then what are the changes will happen in the system?

542

why there using acb enclosure in big buildings

1054

how to extend relay operating timing in 24V dc relay card (without using Timer )

1060

What are the basic component of a cro?

267

What is 100% protection of generator? Why 100% is not used but 95% is generally used?

233

What is meant by positive and negative feedback?

240

The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1095

Why does amplifier gain reduce?

263

what is cogging and crawling

1609