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Electrical Engineering Interview Questions
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two parallel conductors are carrying the current in the same direction.which of the following statements is true? (a)there is arepelling force between the conductors (b)the force increases when the distance between the conductors is increased (c)there is an attaracting force between the conductors (d)the force increases when the distance between the conductors is decreased

1 2389

In the solution of load flow eqation, Newton raphson method is superior to the gauss siedal method because (a)the time taken to perform one iteration in the NR method is less when compared to GS method (b)the number of iterations required in the NR method is more compared to that in the GS method (c)the number of iterations required is dependant on the size of the system in the NR method (d)convergence characteristics of the NR mehod are not affected by the selection of the slack bus

1 2782

the transient state stability limit of a system wherin power is transmitted throgh a double transmission line is (a)equal to steady state stability limit (b)more than its steady state stability limit (c)less than than its steady state stability limit (d)equal to its dynamic stability limit

1 4364

why universal motor work on ac & dc both?

EMC, emc2,

1 6485

What is CRT (Contact Resistance Test) for Isolators or Dis- connector Switches? Why we performed it & whats the Testing procedure.

Siemens,

1 8945

What is Hi-Pot Test for Grid Station HV Equipments?

Siemens,

2 5907

in one substation we have two power transformers of 100mva,75mva capacity.statoin load is155mva.how much each tranformers share the load????

TNEB Tamil Nadu Electricity Board,

6 7217

is ac supply can store

985

Why does the DC voltage needed is less than AC needed to produce corona?

TATA,

2 3326

how to calculate the change over time for star delta starter for different KW motor?

3146

what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.

Ahsanullah University of Science and Technology,

4405

why earth fault current is always less than the o/c

2 2625

How can calculate HT side VCB? For example I have 1250 KVA load what will be HT side VCB Amp.range and what size XLPE cable I use for HT side.

NASSA, Orchid, SB Automation,

2 14460

We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

903

1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops

969


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Un-Answered Questions { Electrical Engineering }

Is there any abbrevation for STUB in Stub bus protection

1055


How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

205


1)Explain why the cradle guard is used on railway crossing in overhead line construction?

2254


how the phase convertor changes the no. of phases

1141


we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input

1223






what is high and low cut off voltage of BB and DG at SPS????????

518


WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

1305


what is harmonics? what are the factors it will depend upon

1073


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

4476


What is order of the system?

202


Can we use Ccapacitive voltage transformer directly for metering purpose?

595


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

1197


hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com

886


State the methods of improving power factor?

156


Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

1686