8 Energy – forces doing work

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Question 89

H

A motor receives 600 W. The motor has an efficiency of 0.80 and drives a gearbox. The gearbox transfers 75% of the energy it receives to a load. What is the useful power transferred to the load?

[1]

$W480\ \mathrm{W}$

$W450\ \mathrm{W}$

$W360\ \mathrm{W}$

$W120\ \mathrm{W}$

8 Energy – forces doing work

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Question 89

H

A motor receives 600 W. The motor has an efficiency of 0.80 and drives a gearbox. The gearbox transfers 75% of the energy it receives to a load. What is the useful power transferred to the load?

[1]

$W480\ \mathrm{W}$

$W450\ \mathrm{W}$

$W360\ \mathrm{W}$

$W120\ \mathrm{W}$

8 Energy – forces doing work

Question 89

Markscheme

8 Energy – forces doing work

Question 89

Markscheme

8 Energy – forces doing work

Question 89

8 Energy – forces doing work Questions

8 Energy – forces doing work

Question 89

8 Energy – forces doing work Questions