Machine | Output (J) | Efficiency (%) TET

Question

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

Answer 1

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.