Question:
Calculate the efficiency of a Carnot engine operating between temperatures of 500K and 300K.
Calculate the efficiency of a Carnot engine operating between temperatures of 500K and 300K.
Show Hint
For a Carnot engine, efficiency is calculated using the temperatures of the hot and cold reservoirs.
Updated On: Jun 17, 2025
- 40%
- 60%
- 70%
- 50%
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The efficiency of a Carnot engine is given by: \[ \eta = 1 - \frac{T_C}{T_H} \] Substituting the values: \[ \eta = 1 - \frac{300}{500} = 0.4 = 40% \]
Was this answer helpful?
0
0
Top TS PGECET Mechanical Engineering Questions
- A mass 'M' is attached at the end of a string whose length is 'L' and whirled at a constant speed in vertical circle. Generally, the tension in the string is minimum when the mass is
- For a triple threaded screw, the lead is 30 mm and the mean diameter of the screw is 80 mm, then the pitch of the screw is
- If the coefficient of friction between tyres and the road is 0.6, what is the angle of banking for a highway curve of 500 m radius designed to accommodate cars travelling at 180 km/h?
- The loss of potential energy of an elevator coming down from the top of the building to a stop at the ground floor is
- The loss of potential energy of an elevator coming down from the top of the building to a stop at the ground floor is:
View More Questions
Top TS PGECET Thermodynamics Questions
- Radiation heat transfer in the system is characterized by
- The slope of curve on p-V diagram for different processes
- The COP of heat pump in comparison with COP of refrigeration cycle for the specified temperature limits is given by
- In a polytropic process, heat rejected is given by
- “Heat cannot flow by itself from a body at lower temperature to a body at higher temperature” and can be done by the supply of external work is
View More Questions
Top TS PGECET Questions
- If \( P = \begin{pmatrix} 1 & 1 & 1 \\ 0 & 1 & 2 \\ 0 & 0 & 1 \end{pmatrix} \) is the modal matrix of \( A = \begin{pmatrix} 1 & 1 & 0 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{pmatrix} \) then the sum of all the elements of \( P^{-1}AP \) is
- If the system of equations \( kx + y + z = k - 1 \), \( x + ky + z = k - 1 \), and \( x + y + kz = k - 1 \) has infinite solutions, then \( k \) is
- The value of the integral \( \int_C (2xy - x^2) \, dx + (x^2 + y^2) \, dy \) where \( C \) is the boundary of the region enclosed by \( y = x^2 \) and \( y^2 = x \), described in the positive sense, is
- Let \( f(x) = \log x \). The number \( C \) strictly between \( e^2 \) and \( e^3 \) such that its reciprocal is equal to \( \frac{f(e^3) - f(e^2)}{e^3 - e^2} \) is
- The solution of the differential equation \( (D^2 + 2)y = x^2 \) is
View More Questions