If work done by the heat engine is $600 J$ and heat absorbed by the working substance is $800 J$ , the efficiency of the heat engine is

133 %

No worries! We‘ve got your back. Try BYJU‘S free classes today!

75 %

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

25 %

No worries! We‘ve got your back. Try BYJU‘S free classes today!

33 %

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $75 %$
$W = 600 J$
Heat absorbed by the working substance, $Q_{1} = 800 J$
Efficiency of heat engine is given as,
$η = \frac{Work done}{Heat supplied} \times 100$
$∴ η = \frac{W}{Q_{1}} \times 100 = \frac{600}{800} \times 100 = 75 %$

Suggest Corrections

Similar questions

Q. If work done by the heat engine is

600 J

and heat absorbed by the working substance is

800 J

, the efficiency of the heat engine is

Q. An ideal gas acting as a working substance for a heat engine. The heat interaction involved during the process are

Q_{1} = 9605 J

and

Q_{2} = - 8565 J

respectively. Then efficiency of the heat engine is

A heat engine absorbs heat $Q_{1}$ at temperature $T_{1}$ and heat $Q_{2}$ at temperature $T_{2}$ . Work done by the engine is $(Q_{1} + Q_{2}) J$ . This data:

Q. The efficiency of carnot engine is 0.6. It rejects 20 J of heat to the sink. The work done by the engine is :

Q. A Carnot engine absorbs 1000 J of heat from a reservoir at 127C and rejects 600 J of heat during each cycle.
Calculate
(a) The efficiency of the engine
(b) The temperature of the sink
(c) The amount of the useful work done during each cycle.

Join BYJU'S Learning Program

If work done by the heat engine is 600 J and heat absorbed by the working substance is 800 J, the efficiency of the heat engine is

The correct option is B 75%W=600 J Heat absorbed by the working substance, Q1=800 J Efficiency of heat engine is given as, η=Work doneHeat supplied×100 ∴η=WQ1×100=600800×100=75%

If work done by the heat engine is $600 J$ and heat absorbed by the working substance is $800 J$ , the efficiency of the heat engine is

The correct option is B $75 %$
$W = 600 J$
Heat absorbed by the working substance, $Q_{1} = 800 J$
Efficiency of heat engine is given as,
$η = \frac{Work done}{Heat supplied} \times 100$
$∴ η = \frac{W}{Q_{1}} \times 100 = \frac{600}{800} \times 100 = 75 %$