if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?

if we convert ampers into kwh or mwh ,which one formula use
by us,pls tell me?

Question Posted / manoj

3 Answers
9791 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / omar aziz

Look , Always try to understand what quantities you have
and their significance. This will help you derive other
quantities yourself using the first principles. Lets derive
KWhr from current I !

Firstly you need to know the voltage at which this current
is drawn from its supply. V

Once you have this info you can find the power flow = V x I
this is in W if you use SI units throughout

Divide it by 1000 to get KW

KWh = unit of energy therfore its Power x time

Now how long would your current be drawn for. say its a fan
drawing 2 Amps and you keep it on for 5 hrs at 240V

(240V x 2A x 5hr)/1000 = 2.4 KWhr

Is This Answer Correct ?

16 Yes

6 No

if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / virendra joshi

KWH = watt x no of hour /1000

W = v x I for single phase
w = 1.73 x VL x IL x Cos@

Is This Answer Correct ?

6 Yes

0 No

if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / s.arul

ohms law: V = IR
you know the current rating, you take the machine
resistense using megger. calculate the voltage rating of
machine.
1 phase: power = V * I * power factor (watts)
3 phase: power = 1.732 * V * I * power factor (watts)
ENERGY (KWH) = POWER * TIME
so, we can calculate the KWH or MWH of the machine....

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

0 Answers

How to improve insulation resistance of Motor

2 Answers

what are the differences between MCB and MCCB ?

19 Answers Bhel, DLF, Omax,

HOW TO CALCULATE SINGLE PHASE AMPERES IN 3 PHASE TRANSFORMER? GIVE AN EXAMPLE PLZZZ

1 Answers

What is the difference between switch gear and control gear ?

2 Answers QU,

If we says that current is flow only when there is closed path & neutral work as a return path for the same. Then how circuit is closed in three phase as no neutral available ??

1 Answers Nimbus Harbor Facilities Management,

in a transmission line the aluminium cor is sarrounded and in between there is a another type of matrial what is that?

7 Answers

why there is no short circuit when any resistance is used between phase and neutral?

3 Answers

whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions

1 Answers

what you mean swtchgear(electrical)

1 Answers

How time response of the system is divided?

0 Answers

super position theorem is applicable to

1 Answers

For more Electrical Engineering Interview Questions Click Here