Electrical Engineering Interview Questions

how net resistance islow in star connection and viseversa in delta connection...? if anybody could explain in detail it wud be helpful.

1132

All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?

1212

As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

cpgn,

1176

Which types of gate insttaled in static switch. Please give me answer.

cpgn,

1195

How to calculate the size of cables (all minium/copper) for a particular load

2313

Can we use 1.1x 2 split air-conditioning at a same time in 2kw power loadar

1800

what is breathing?

PWD,

1349

Why silica gel use?

PWD,

2400

What is corona loss?

PWD,

2670

what is impedance?

PWD,

2409

What are Line losses and how can be it minimized/controlled.?

Omega, XYZ,

2702

Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.

1267

Define the three phase formula fuse.

1408

how to find under ground cable fault ??? if our cable size is 95*4 then what will load capacity with far mull

2528

What is AMP and KA in a MCCB and MCB

2881

Un-Answered Questions { Electrical Engineering }

What are the effects of adding a zero to a system?

682

What is Fire Panel ? How it works ?

1599

HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?

1575

what is the minimum (Common factor) insulatin resistance of the following a, 4mm sq wire b, cable from 50 mm sq to 800mm sq

1654

HOW MANY TYPES OF FUSE?

1655

I am completed DEEE in tamilnadu, now i am working in andhrapradesh with 2.5 year experience in relavent field. capacity of the tranformer is 11KV, 1MVA Transformer, i am eligible for getting c licence in andhrapradesh pl help me.

1136

Define demand factor?

670

what is ramping rate of generator

1571

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1411

1600

i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?

1619

Why CBCT rating is 50/1A

2331

A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

709

the grid connection required for a 50 MegaWatt fotovoltaic powerplant is higher or lower than 35kv (high or medium tension)?

1442

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2133