nonnieselman

iTrader: (10)

Ive been stuck on this question for wayyy too long..

Im takin a Electrical Engineer class and its kickin my butt..


Here is the question i cant figure out...

If a DC Generator with an Efficiency of 94% has an output of 240 volts at 100 amperes, the machine power Losses for this generator would be....

A. 1175 Watts
B. 1487 Watts
C. 1532 Watts
D. 1655 Watts


Only thing i can find in my book is:
You must determine the total power loss of the machine by adding together all the various losses. The total power input is equal to the power output plus the total loss. Power Input = Power Output + Power Loss
To find the efficiency:
Efficiency = Power Output/Power Input x 100




This is so aggravating..


But i tried to use the VoltsxAmps= Watts for DC current.
240x100 = 24000 Watts....
Tried this..
24000 watts x .96 and get 23040... thats only a difference of 960
24000 watts/ .96 and get 25000 Difference of 1000

Help.... haha...

tarinitup

iTrader: (11)

24000 is the output so you divide by .94 to get the input and it is 25531.92 then you multiply that by the inneficiency(.06) and get 1531.92 so C is the answer. I'm not an engineet but good in math.

nonnieselman

iTrader: (10)

Dude you suck......
I was tryin to figure out what i could do with the (.06)
It never dawned on me...


Not a Speller either huh?




















OH and Thanks big time!!!!

tarinitup

iTrader: (11)

I typed it fast cause I thought you were in a bind. I noticed after but too LAZY to fix it. I'm lazy not dumb.

nonnieselman

iTrader: (10)

Haha i appreciate it man...
And just messin with ya..
Never take anything like that as a insult from me... i like to joke around.

nonnieselman

iTrader: (10)

Passed with a 96 on that test..... man i hate this stuff..
The company is payin for it so im taking it..

Thanks Tarinitup!

nonnieselman

iTrader: (10)

Check this out.......


What is the real power if Ems=100 V, Ims=2 A, and the circuit has a power factor of 0.8?