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Electrical Engineering Interview Questions

If rotor works in clock wise what happens

964

i need mat lab program to find out the transmission line losses,regulation and losses

AITM,

983

50 electric bulbs are connected across supply of 220 volts. After one bulb is fused remaining 49 bulbs are again connected to same supply. which case will have more illumination & WHY????????

KJ,

4638

We have Diesel generator of 200KW but load connected to it only 100KW. Pl. brief me about fuel consumption.

ARDE,

4620

what happens when ac supply is given to the dc motor and dc supply is given to the ac motor?

GATE,

3098

what happens when dc supply is given to the transformer?

3521

What is the name of process In VFD frequency are increase then voltage increase & frequency decrease then voltage decrease?

969

why the transformer was not rotating like a motor?

TATA,

4288

How much heat will a 2500 KVA transformer will generate ?

6026

A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is vd. If the diameter of wire is made d/3, then drift velocity becomes

5268

what is mean by restructuring power system?

982

We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?

ARDE,

1188

what is the difference between home inverter and online ups?

ME,

2699

what is the formula for backup time of online ups?

2380

Why mostly GT(Generating Transformer)has only Ynd1 Vector Group?

3511

Un-Answered Questions { Electrical Engineering }

th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

991

What is mason's gain formula?

167

At what speed an electric car can run with 2 HP motor of weighing 400 kg?

805

In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

787

wht is embedded systems? what is new inthis field?

1001

what is self capacitance of inductor

1315

What is the source of dependent source ?

935

Why derivative controller is not used in control systems?

160

how could we know the size of cable by physical view?

713

how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

868

What is the difference between alternator and generator?

188

Can we convert off line transformer to on line transformer

1006

why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points

1022

What is meant by celling voltage & current in excitor ?

1092

completed BE & done apprentice at tneb & having experience 6 years. want to get c license. will apprentiship & BE be helpful for getting c license. will i get any preference by showing this?

657