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Electrical Engineering Interview Questions

how df/dt relay operates & how it works?

2250

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1176

if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

Bhel,

1229

how can we calculate the cooper armed cable size if the protection load of main fuse is 80 ampere.

2534

how can i get the formula to find out the cable size if i know the load of main fuse protection.

1011

What is the distance between body earthing and neutral earthing.?

2888

WHAT IS THE DIFFERANCE BETWEEN IP54 AND IP55

4796

r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā

881

Iin ESP why positive is grounded ? why not negative ?

1407

why any centrifugal blower draw more current in starting. consider id fan and fd fan?

905

in india why the generating voltage is like 11kv,22kv etc

4211

hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1030

bus bar design conditions and sizing pls tell me quickly

1042

What is turbocharger in a generator?

3001

when conductor rotates in varying magnetic field the emf will induced in it and it is sinusoidal in nature ...? Why it is not in square wave and rectangular wave in nature?

3304

Un-Answered Questions { Electrical Engineering }

How to Calculate the Fault Level of Electrical Installation

1343

According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

1008

What is gain margin?

199

diameter of cable and core is doubled then the value of capacitance is

2818

What do you mean by turns ratio of instrument transformer?

189

What is the power plant or power station?

224

Why efficiency of generator is higher than motor at a particular load?

1213

how flow current in 220 kv line to line

1130

what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

1621

What is the difference between resistance grounding system and resistance earthing system?

191

How to run a three phase motor into single phase........

1179

how much flux density of CRNO core

1772

how we select ac fuse rating of an power inverter???

983

how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

1710

Define branch?

181