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DRDO Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Two electronic energy meters are connected to seperate phase wires, but connected to a looped neutral. Are these going to function correctly?

8 10064

why we use star connection on the primary side of a transformer?

5 14818

Questions :- HR- Q.1 about yourself & family background ? Q.2 Why u choose Power sector as ur carrier starting not any other sector ?? Q. 3 What think abt NTPC ? Techincal Questions:- Q.1 about Vocational Training……What u did , see the main equipments….etc Q.2 Why a transformer Noise during its running condition ? Q.3 about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ? ……..some discussion type ? Q.4 What is relation between transmission lines & Communication lines ? Q.5 Which Machine u will prefer to use at a place where flammable gases are coming out & why ? Q.6 how fault in an electric system is detected & hw protection of equipments is done ? Q.7 Why we didn’t feel electric shock in an electric train ?? Q.8 Anything u want to ask from us ??

44 33820

What happens if a three phase induction motor is suddenly single-phased while running? Which type of winding connection will be affected?

22 62709

campared to ac, in dc corona loss is

4 8912

Describe the control mechanism of missile launcher???

1300

what is the difference between thyristors and capacitors

2 8200

two bolbs of 100w and 40w respectively connected in series across a 230v supply.which bolb will glow bright and why?

16 57144

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 3879

WHAT ARE THE BELT HORMONICS IN AC MACHINE HOW TO REDUCE IT

2 3749

if u give d.c. supply to transformer primary then what happen.&why??????????????

4 7286

In simply words(not explain any formula )what do you mean by power factor.?

5 5507

What is the minimum load that you can keep in a 3 Phase 40 KVA Diesel Generator? Is it neccessary to load all the 3 phases? Can a phase be left without load?

2 4635

What is the difference between voltage and emf ?

3 5388

What is complex power?

1 2553

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