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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

v/f drive basic princeple

1451

In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

RRB,

1513

Can Dy11 and Dy1 vector group transformers be paralleled?

1 8275

ell me capacitor bank chossen formula.load in KW

1 2301

what is Dog conductor? wasp conductor? rabbit conductor? ant conductor?

3 14468

HOW TO CALCULATE SINGLE PHASE AMPERES IN 3 PHASE TRANSFORMER? GIVE AN EXAMPLE PLZZZ

1 2717

1sq mm dc powr cable can carry how much dc currnt

988

What is AVR in Turbo generator in Thermal power plant?

Thermax,

5 19510

Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

Hindalco,

1144

In explosive and polluted environments which type of motors do we use?

NTPC,

3 5408

A 230V, 60W bulb when connected to 230v supply what current and power will consume, if same bulb is connected to 200v what purrent and power will consume?

3 6054

what is rated voltage?

1 2318

what does the word synchronous mean in 'synchronous machine'

3 3457

what are eddy currents

2 2718

if suplly 11kva its give 440volts then if suplly is given 10kva whats the volts given

3 3178


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Un-Answered Questions { Electrical Engineering }

Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

1036


Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?

2043


if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

812


What is relation between transmission lines & Communication lines ?

1271


please give some hindalco placement papers for written exam

862






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

1249


Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com

1137


Define active filter?

157


how to calculate current and voltage in a same circuit?

1127


What is an ideal transformer?

159


A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

1166


what is the difference between elcb and rccb ?

1276


If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

1180


how to size H.T & L.T Panel ?

1116


what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1061