Explore topic-wise MCQs in Mechanical Engineering (MCQ) questions and answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering (MCQ) questions and answers knowledge and support exam preparation. Choose a topic below to get started.

1.

For the same heat transfer Q and same overall heat transfer coefficient U, surface area required for cross flow operation is always

A. less than LMTD for parallel flow
B. more than LMTD for parallel flow
C. same as LMTD for parallel flow
D. unpredictable
Answer» B. more than LMTD for parallel flow
Discussion
2.

For the same heat transfer Q and same overall heat transfer coefficient U, surface area required for parallel flow operation is always

A. less than LMTD for counter flow
B. more than LMTD for counter flow
C. same as LMTD for counter flow
D. unpredictable
Answer» C. same as LMTD for counter flow
Discussion
3.

Which of the following temperature difference is safer than other to consider in designing of heat exchangers?

A. Arithmetic Mean Temperature Difference ( T
B. Logarithmic Mean Temperature Difference (LMTD)
C. Both have nothing to do with safety
D. Other
Answer» C. Both have nothing to do with safety
Discussion