Explore topic-wise MCQs in Heat Transfer.

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

1.

Leiden-frost expansion is related to

A. Condensation of vapor on a cold surface
B. Exchange of heat between two solids
C. Evaporation of a solution
D. Boiling of liquid on a hot surface
Answer» E.
Discussion
2.

Heat flux increases with temperature excess beyond the Leiden-frost point due to

A. Radiation effect becomes predominant
B. Occurrence of subcooled boiling
C. Vapor space become large
D. Promotion of nucleate boiling
Answer» B. Occurrence of subcooled boiling
Discussion
3.

The excess temperature range 50 degree Celsius < d t < 200 degree Celsius is indicative of the region of

A. Interface evaporation
B. Nuclear boiling
C. Partial film boiling
D. Stable film boiling
Answer» D. Stable film boiling
Discussion
4.

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by Fritz and is given by

A. C <sub>d </sub> [2 /g (p <sub>t </sub> p <sub>v</sub>)].
B. C <sub>d </sub> [2 /g (p <sub>t </sub> p <sub>v</sub>)] <sup>3/2</sup>
C. C <sub>d </sub> [2 /g (p <sub>t </sub> p <sub>v</sub>)] <sup>1/2<strong></strong></sup>
D. C <sub>d </sub> [2 /g (p <sub>t </sub> p <sub>v</sub>)] <sup>5/2</sup>
Answer» D. C <sub>d </sub> [2 /g (p <sub>t </sub> p <sub>v</sub>)] <sup>5/2</sup>
Discussion