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 A
machine B
machine C
machine D
To find the input work required for each machine, we can use the formula:
Input work = Output work / (Efficiency / 100)
Calculating the input work required for each machine:
Machine A:
Input work = 750 / (60/100) = 750 / 0.6 = 1250
Machine B:
Input work = 1000 / (40/100) = 1000 / 0.4 = 2500
Machine C:
Input work = 450 / (30/100) = 450 / 0.3 = 1500
Machine D:
Input work = 3000 / (75/100) = 3000 / 0.75 = 4000
Therefore, machine A will require the least input work with 1250 units.