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Electrical Engineering Interview Questions

For these 2 devices what their power ratings are ? 1) single phase : AC 220V & starting amps 3Amps (i.e. starting torque) and the stabilized amps 2A ... For deep freezer 2) single phase : AC 220V & starting amps 2.7Amps (i.e. including the starting torque of a CRT monitor) and the stabilized amps 1 Amps thanks

2024

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

2786

how many ampere Maxmium load given on a 10 kva DG set?

5527

Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

1165

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?

1272

What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?

1716

how to find out this one mcb r mccb?

L&T,

4452

how to identyfy cable sizes?

IAF, Mylan,

4513

What will happened, if field voltage change with 220 voltage to 110 voltage for a dc shunt motor?

1990

what is the deference between watt and KVA

IAF,

3647

what is the difference between phase and neutral?

5286

How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

1280

How much minimum insulation required between 11kv/3.3kv transformer windings?

1534

what is Use of Stones/Gravel in electrical Switch Yard??

13261

How to find synchronous motor speed formula Ns=120f/P ?....

19515

Un-Answered Questions { Electrical Engineering }

1260

how did the testing of protection relays done through current injection

1282

The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.

1115

hi....I am from india..i have completed my engineering in electrical and electronics field with 58.4% and my IELTS score is 5.5 bands....Recently i received my I-20 in computer and information science from Troy university in Alabama.On 18th i have a visa interview can u please tell me what type of questions i have to answer ??????

980

WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

1630

how to modify DOL control panel into Delta Y connection?

1109

where can the transformer having vector group Yny0 be used??

2928

which type of effect of turbine and generator reverse power protection ?

3351

which is better to use svc or synchronous condenser why ?

973

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

231

What is the difference between Encoder and Resolver?

2405

what the function breaker failure scheme, how is it operated

1080

What is the difference between type1 and type2 relay protection co-ordination for motor feeders

1276

Why does inductive loads consume KVARs?

1185

hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

1241