Electrical Engineering Interview Questions
Questions Answers Views Company eMail

can we run the home fan both clock and anticlockwise direction

1 3234

in star connected 4wired transmission system ,what happen if the neutral is grounded . or not grounded. which is significant and y

2 3674

if we have to design a small transformer of rating 1 kva or 1 mva , how can we design it?

1 3719

What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..

ABB,

1505

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?

1476

Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?

1535

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

1558

Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

1435

What is the max value of neutral current that can be allowed in system?

1702

What are the disadvantages if neutral current exists in grounded star transformer distribution system?

1 4782

What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1415

What will be the size of cable required for 5.5 KW motor ( Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

2 25282

What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

1586

What is the difference between LT CT & HT CT?Can we use indoor type transformer as an outdoor type or vice versa?

Bhel,

2 10165

Where can I get CPWD electrical specifications & Shedule of rates? Please help me

1813


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Un-Answered Questions { Electrical Engineering }

What is Anemometer used to measure?

676


how to calculation increase capacitor,increase power factor for three phase.

1639


What is the necessary condition for stability.

732


calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3071


why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

1483






Mention what are the different colors on wires indicates?

756


what are pilot cells

1581


how to calculate the capacitor to maintain power factor?

1664


what is the advantages og idmt relay over magnetic relay??

3721


What is the two pole structure?

1423


what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

1573


In a single how much maximum current and watts using

1642


What is the transfer function?

620


for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

1612


The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

1488