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Recall Quiz - Efficiency Calculations 290121

Last updated about 5 years ago

3 questions

1

1

1

Question 1

1.

Which of the following is not a correct method to calculate efficiency?

divide useful energy by total energy input

divide useful power output by total power output

divide wasted energy by total energy input

Question 2

2.

If an energy transfer is very efficient that means that a …… amount of energy is being transferred usefully & a …….. amount is dissipated.

large / large

large / small

small / small

small / large

Question 3

3.

If a transfer has an efficiency of 0.75, we can also write this as being __% efficient.

25 %

75 %

0.75%

7.%%