can any one tell me the formula for calculating the power
and unit consumpetion




Answers were Sorted based on User's Feedback



Answer / mubashar ali

total KW * total runing Hours= unit
for example
5 lamp 100 watt each onload for 6 hour
AC 3000W onload for 3 hour
Motor 5HP (5*746=3730W) onload for 2 hour
than

500/1000 * 6= 3
3000/1000 * 3= 9
3730/1000 * 2= 7.46
total unit = 19.46 * Rs.

Is This Answer Correct ?    12 Yes 0 No

Answer / ramesh gaur

one unit is equal to one kwh(1000w per hour)

Is This Answer Correct ?    8 Yes 0 No

Answer / vinothbabu.k

P=(1.732*VOLTAGE*AMPS)/1000,
FOR UNIT CONSUPTION:

KWATTS*HOURS=UNIT-ITS FOR INDUCTIVE LOAD,
FOR RESISTIVE LOAD THE ABOVE IS CORRECT,LAMP HEATER IS
RESISTIVE LOAD,
IT DEPANDS ON TYPE OF LOAD.
AND FOR CAPACITIVE & INDUCTIVE LOAD NO OF WORKING HOURS
WILL BE VARRY,FOR EXAMPLE TAKE FRIDGE WAS WORKING FOR 2
HOUR IT TAKE 750W MEANS WE SHOULD NOT
CALCULATE .750*2=1.5KWHR/UNIT,FRIDGE IS A CAPACITIVE LOAD
IT WILL ON OPPROXIMATELY 35 MIN FOR EVERY PER HOUR SO WE
SHOULT TAKE FOR 2 HRS IT WILL ON 1.05HRS FOR 2 HRS,
SO 750*1.05=0.787 UNIT

Is This Answer Correct ?    3 Yes 0 No




Answer / chandru

power= v*a
unit=kwh

Is This Answer Correct ?    2 Yes 0 No

Answer / sivaram senthil.g

p=v*i

Is This Answer Correct ?    4 Yes 3 No

Answer / vinothbabu.k

P=(1.732*VOLTAGE*AMPS)/1000

Is This Answer Correct ?    1 Yes 0 No

Answer / mad sarfaraj

power(p)=dw/dt(this is the basic formula 4 power)
and it's S.I. unit is joule/second or watt.

Is This Answer Correct ?    1 Yes 0 No

Answer / balaji

Power=i^2*R(resistor multiplied with square of current)

Is This Answer Correct ?    0 Yes 0 No

Answer / mohanbabublr

Power=(√3xVxIxCosΦ)/1000

Is This Answer Correct ?    0 Yes 3 No

Post New Answer



More Electrical Engineering Interview Questions

At full load wat is the motor p.f And at no load will is the motor p.f?

0 Answers   GEPL,


How capacitor connect in 3 phase supply???

1 Answers   L&T,


What are the applications that use Solid State Drives in your home?

1 Answers   L&T,


method to check earthing

5 Answers   ECC,


please tell 1 ton equal to how many kilo watt?? in some converter software's that is 3.5 kw. is it right?

8 Answers   Mitsubishi,






why there is a humming noise in transformer

8 Answers   Bhel,


what is the constructional difference between a power transformer and potentian transformer?

0 Answers   BTM,


What are your future expectations from this company and how long do you intend to work with this company if employed?

1 Answers  


what is the maximum load sutiable from earth to phase and what is the max voltage earth to phase suitable

1 Answers  


what should be the value of proper neutral earthing resistance?

3 Answers   ABC,


which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..

1 Answers  


how rating of transformer is selected for any new plant/what kind of load is cosidered/what kind of fadtors are considered/ pz give standard procedure

2 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (4616)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3692)
  • Electrical Engineering Interview Questions Electrical Engineering (15723)
  • Electronics Communications Interview Questions Electronics Communications (2631)
  • Chemical Engineering Interview Questions Chemical Engineering (756)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (79)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2865)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (41)
  • Marine Engineering Interview Questions Marine Engineering (60)
  • Power Plant Engineering Interview Questions Power Plant Engineering (168)
  • Engineering AllOther Interview Questions Engineering AllOther (1331)