Explore topic-wise MCQs in Thermodynamics Questions and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

A torque of 650 Nm rotates a shaft of radius 0.125 m with ω = 50 rad/s. What is the transmitted power?

A. 22.5 kW
B. 32.5 kW
C. 42.5 kW
D. 52.5 kW
Answer» C. 42.5 kW
Discussion
2.

A radiant heating lamp has a temperature of 1000 K with ε = 0.8. What should be the surface area to provide 250 W of radiation heat transfer?

A. 0.0035 m2
B. 0.0055 m2
C. 0.0075 m2
D. 0.0095 m2
Answer» C. 0.0075 m2
Discussion
3.

A window having area of 2m^2 has a surface temperature of 15°C and the air is blowing at 2°C across it with convection heat transfer coefficient of h = 125 W/m2K. Find the total heat transfer loss?

A. 3250 W
B. 2250 W
C. 4250 W
D. 5250 W
Answer» B. 2250 W
Discussion
4.

Find the rate of conduction heat transfer through a 1.5 cm thick board(k = 0.16 W/m K), with a temperature difference of 20°C between the two sides.

A. 113 W/m2
B. 413 W/m2
C. 313 W/m2
D. 213 W/m2
Answer» D. 213 W/m2
Discussion