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Electrical Engineering Interview Questions
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2. Modify your design in question 1.a so that the circuit works according to the following function table X Y F 0 0 Clear 0 1 No Change 1 0 Parallel Loading 1 1 Count 3. Design a circuit that detects the pattern 010 in a serial input X considering: 3.a Overlapping 3.b No overlapping

983

how we calculate capacitor bank mvar for 11 kv distribution networ , and i need releation between capacitor bank with voltage, frequency, current, pf

2 6983

I have a 1000 kVA Transformer(11kV/0.415kV) and a APFC panel of 400 kVAR(LT).Now if i want to remove the LT APFC panel and install a HT(11kV) APFC panel on the HT side is the HT APFC panel will work same as the LT APFC panel(improve the power factor),if yes what will be rating of the HT APFC panel?what is the formula to calculate HT APFC panel rating???

2 6954

What is float cum boost charging system?

1074

What is trickle charging system?

Absotherm,

2 3196

AVR

2 3308

all details of DG UPS HVAC

1008

I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

971

what is power factor

4 4011

What is actual name of Transformer oil.

6 6291

WHY NOT CONSIDER PROTONS IN ELECTRICITY LIKE ELECTRIC CURRENT?

1 1770

If a generator of generating station produces 100MW rated output then what will be the rating of the step-up transformer connected to it?

5 3550

as we see that in our country the power rating for transmission is always rated in multiple of 11 like 11kv,33kv,66kv132kv. So i want to know wht is reason or logic here.

2 2452

what is lrs tank water resistance.

1 1774

what is lrs tank water resistance.

1599


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Un-Answered Questions { Electrical Engineering }

what can be the causes of capacitor start motor having a higher current that its actual

1029


Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

1162


What is online and offline ups? how does it works?

1098


Cb closed condition if there is a tcs fail whether cb will trip or not

761


How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

964






How many types are using in 220kv/400 kv swith yard

1296


how the works electronic energy meter?

1195


How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

1439


2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

1091


(1)The demand for electricity , the amount of renewable generation available, the amount of fossil fuel generation available and the cost of the fossil fuel generation are shown in table below period(hrs) demand(MW) renewable (MW) fossil- fuel(MW) cost of fossil fuel(MW) 00.00 - 01.00 2000 1800 2000 30 01.00 - 02.00 2300 2500 2000 30 02.00 - 03.00 2500 2700 2100 45 03.00 - 04.00 2900 3100 2100 50 04.00 - 05.00 2700 2600 2500 45 05.00 - 06.00 2400 2000 2700 50 06.00 - 07.00 2200 1800 2000 36 07.00 - 08.00 2100 1600 2000 36 Assuming that the renewable generation incurs zero cost, determine an optimal generation schedule(specifying the amount of renewable generation and fossil fuel generation used in each period, the cost for each period and the overall cost for 8 hours.)

983


WHY NUTRAL GROUND SYSTEM USED IN 33KV SYSTEM

1313


Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

2371


Testing procedure of DG alternator stability test

473


what are the installation procedure of high voltage power transformer,CT,CB&PT?

1149


Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?

898