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Find the amount of work done to increase...

Find the amount of work done to increase the engines ever developed operates between `2100 K and 700 K`. Its actual efficiency is `40%`. What percentage of its maximum possible efficiency is this?

A

`40%`

B

`60%`

C

`66.67%`

D

`33.37%`

Text Solution

Verified by Experts

The correct Answer is:
B
`eta=1-(T_L)/(T_H) = 1-700/2100=2/3`
`^ eta = 2/3xx100=66%`
Actual efficiency is `40%` which is `60%` of the theoretical effienency`.
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