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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

1962

what is Real power and Reactive power ? what is difference between them ?

5 5082

why DC motor body is plain cover but AC motor is different like finse?

2 3895

how will be power factor while using the resistive load and Capacitive load?

3 3546

what is ups Paralleling? how is load sharing at that time ? what are the things we have to note that time?

1 3012

how is working the auto transformer?

1 3696

how is working the APFC when varying the load?

1 4315

what is static switch where it can be use?

1 2238

what is the cable size we can use for 11kv and 33kv ?

3 8777

What is rotating transformer? Which machine is used specifically as rotating transformer?

TATA,

3 5403

If the damper winding on the rotor of a synchronous motor is removed after starting what will happen?

IOCL,

7 10575

What is the working principle of VFD

HCL,

3 17702

Difference between DOL starter & star Delta Starter? And where the Dol starter used upto how much HP and whereas Star Delta vice versa?

3 10907

How to take vector group test of a transformer? Suppose we dont know the vector group of transformer, how to check its vector group through test? I have 3 transformer DYn11 & DYno& Ynd11, how to confirm its vector group?

1 4137

how to calculate single phase motor efficiency ?

Bhel,

1113


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Un-Answered Questions { Electrical Engineering }

In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

2236


i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

1310


hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com

1162


in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

1103


Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

1194






What are marginally stable systems?

230


What is power relay?

286


What happens if we connect a single phase energy meter in reverse polarity.

944


WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?

1016


plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

1246


Why different Pressure switch used in marine boiler water circulation system

882


If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma

1170


DC transmission

1172


Why we use ups battery and dsdb battery in thermal power plant

1260


In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

329