Answers were Sorted based on User's Feedback

max demand of a company and transformer is the maximum
power that his circuit is likely to draw at any time.

 Is This Answer Correct ? 54 Yes 4 No

i want to give answer of this que. by an Example:

**if connected load of our system( factory,
Works,plant ...Etc) is 1250KW(1.25MW)...it means our maxi
demand at PF 0.83 is 1506KVA (1.506MVA)

one transformer used for this load with rating PF 0.8,
11kv/0.415, 1500kva
***it means MD in KW is 1200KW
MD in Kva is 1500KVA (1.5MVA)

it means this x-mer is not suitable for this load because
efficiency of x-mer is maxi. at half load. for above
example, this x-mer is suitable for 600KW-850KW at
PF=0.83)
Here
** is the MD of Company
***is the MD of X-mer

 Is This Answer Correct ? 25 Yes 5 No

The maximum demand of a power transdormer does not exceed
80 percent of its power rating.

 Is This Answer Correct ? 18 Yes 6 No

Transformer generally selected 25% higher KVA than peak load of the organization.

 Is This Answer Correct ? 4 Yes 0 No

Maximum Demand (kVA) is your peak demand of electricity from the grid. ... Your energy distribution company charges you for the maximum demand, so it costs you money. Maximum demand (MD) is the peak level of electricity demand recorded by TNB meter during a 30-minute interval in a month. The amount charged to a user is based on the recorded MD in kilowatt (kW) multiplied by the respective MD rate.

Company MD is sanctioned MD which you have to maintain to avoid penalty from Electricity Board

 Is This Answer Correct ? 0 Yes 0 No

The recorded maxdemand is the maximum demand of transformer

 Is This Answer Correct ? 0 Yes 1 No

always 11kv rating power transformer use in my company..n almost 3 phase transformer use

 Is This Answer Correct ? 0 Yes 5 No

750 kva.

 Is This Answer Correct ? 6 Yes 13 No

Maximum demand means that it shall not cross the 100%
rating of the transformer, if the transformer has no
colling stages and can take extra demand.
Normally the cooling stages increase the transformer
capacity to take load 33% more at eact cooling stage.
Ist cooling stage FA-1.33%
2nd cooling stage FA-1.66%

That means when the transformer getting loaded more than
100% capacity the ist cooling stage gets automatically on
and when it gets more than 133% loaded the second cooling
stage gets automatically on.

 Is This Answer Correct ? 4 Yes 11 No

Consider that 500kva transformer in your company,
and you use only 250 kva load maximum. you must calculate
That means, expecting 275 kva load in feuture, you will get
upto 300 kvaon maximum demand.

Simply get 25% extra from the maximum load.

 Is This Answer Correct ? 5 Yes 13 No

More Electrical Engineering Interview Questions

can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.

If DC supply is given to a transformer it may a) Work b)Not Work c)Give lower voltage than the rated voltage on secondary side. d)burn the winding

Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

what is Aircraft earthing and what does it do?

How to check maintenance free battery 12V,26AH using analog multimeter

I WANT BHEL PREVIOUS QUESTION

what is method of dc current measurement

What are test signals and their significance?

what is meant by rotating magnetic filed

In a 3Ph induction motor(old) 6 wires came out from terminal & not mentioned u1,v1,w1,u2,v2 & w2. how can find out the terminals? how can connect to star delta starter??

if we have 320KVA Genset kindly advice how much load we can put it.

How to design constatnt power source with variable current and Voltage.

Categories
• Civil Engineering (5084)
• Mechanical Engineering (4451)
• Electrical Engineering (16632)
• Electronics Communications (3918)
• Chemical Engineering (1095)
• Aeronautical Engineering (239)
• Bio Engineering (96)
• Metallurgy (361)
• Industrial Engineering (259)
• Instrumentation (3014)
• Automobile Engineering (332)
• Mechatronics Engineering (97)
• Marine Engineering (124)
• Power Plant Engineering (172)
• Textile Engineering (575)
• Production Engineering (25)
• Satellite Systems Engineering (106)
• Engineering AllOther (1379)