An electric motor is tested and found 76% efficient. if the input work is 400 J, what is the motors output work?
what is .76*400J ?
To find the output work of the electric motor, you can use the efficiency formula:
Efficiency = (Output work / Input work) * 100
In this case, the efficiency is given as 76%, or 0.76 in decimal form. The input work is given as 400 J.
Efficiency = (Output work / 400) * 100
0.76 = Output work / 400
To find the output work, we can rearrange the equation:
Output work = Efficiency * Input work
Output work = 0.76 * 400
Calculating this, we get:
Output work = 304 J
Therefore, the output work of the electric motor is 304 J.
To find the motor's output work, we need to use the efficiency formula:
Efficiency = (Output Work / Input Work) × 100%
Given that the efficiency is 76% and the input work is 400 J, we can substitute these values into the formula and solve for the output work.
76% = (Output Work / 400 J) × 100%
To isolate the output work, we can rearrange the equation as follows:
Output Work = (Efficiency / 100%) × Input Work
Now, substitute the given values into the equation:
Output Work = (76 / 100) × 400 J
Output Work = 0.76 × 400 J
To calculate the output work, multiply 0.76 by 400 J:
Output Work = 304 J
Therefore, the motor's output work is 304 J.