Machine | Output (J) | Efficiency (%) TET
A. | 750 | 60
B | 1,000 | 40
C | 450 | 30
D | 3,000 | 75
A manufacturer is given the output work and efficiencies of four different machines. Which machine will require the least input work?
machine D
machine A
machine B
machine C
To find the input work required for each machine, we can use the formula:
Input Work = Output Work / (Efficiency/100)
For machine D:
Input Work = 3000 / (75/100) = 4000
For machine A:
Input Work = 750 / (60/100) = 1250
For machine B:
Input Work = 1000 / (40/100) = 2500
For machine C:
Input Work = 450 / (30/100) = 1500
Therefore, machine D requires the least input work at 4000.