TS EAMCET · Physics · Thermodynamics
An engine performs \(2000 \mathrm{~J}\) of mechanical work and discards \(4000 \mathrm{~J}\) of heat each cycle. What is the thermal efficiency of the engine?
- A \(45.5 \%\)
- B \(31.4 \%\)
- C \(25 \%\)
- D \(33.3 \%\)
Answer & Solution
Correct Answer
(D) \(33.3 \%\)
Step-by-step Solution
Detailed explanation
Work done, \(W=2000 \mathrm{~J}\) Heat transferred to surrounding, \(Q_2=4000 \mathrm{~J}\) Let heat supplied to the engine \(=Q_1\) Since, \(Q_1=Q_2+W=2000+4000=6000 \mathrm{~J}\) Thermal efficiency,…
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