Electrical Engineering Interview Questions
Questions Answers Views Company eMail

WHY THE RATINGS OF TRASNFORMER IS IN KVA?

6604

What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.

7271

How do we calculate the maximum amount of current in a 300 SQ.MM cable ?

2538

If the maximum demand is 120 KVA in a building, then what is the Current taken according to load given ? Formula for it ?

5335

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

1508

how the frequency was generated in power station

3722

As per which Indian Standard induction motors are manufactured?

3643

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

ABB,

4353

if a motor is running at 1500rpm then how you can find its HP

3696

WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)

1315

i want wipro vlsi placement pattern please send me

1264

calotropis is an example of the following phyllotaxy

6501

Radio Carbon dating is used in a) find diseases b) find the age of relics c) find the carbon content in the atmosphere d) none of these

3290

How to improve insulation resistance of Motor

6823

why a single phase motor of same rating takes more amps than the three phase motor? as single phase motor at 230v takes 5amp per HP while 3 p motor takes 2.5amp per hp at 230v.

3881

Un-Answered Questions { Electrical Engineering }

Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.

1429

Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?

736

Determine a suitable number of slors and conductors per slot for the starter 1 winding of a 3 phase, 3300 V. SO Hz 300 rpm alternator. The diameter is 2.3 m

2302

Why is a synchronous motor always star connected??

2067

State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

1433

what is a bus post insulator? explain its application in a substation.

11657

what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)

2079

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

1373

What is Negative Potential Bias

1753

Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?

607

What is the two pole structure?

1381

What do you understand by external characteristics of a d.c. Generator?

604

trasnfarmaer core make

1487

How to discuss the phase shift of transformer considering open delta?

940

why should the primary of transformer be connected in delta in a heat run test?

1427