GATE ME 2023 Paper 1 — page 16

Complete GATE ME 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 46–48 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 16 of 22

Cylindrical bars P and Q have identical lengths and radii, but are composed of different linear elastic materials. The Young’s modulus and coefficient of thermal expansion of Q are twice the corresponding values of P. Assume the bars to be perfectly bonded at the interface, and their weights to be negligible.

The bars are held between rigid supports as shown in the figure and the temperature is raised by

. Assume that the stress in each bar is homogeneous and uniaxial. Denote the magnitudes of stress in P and Q by

and

, respectively.

Which of the statement(s) given is/are CORRECT?

Diagram for Mechanical Engineering question 46

Your answerSelect all correct options. You can choose more than one.

The interface between P and Q moves to the left after heating

The interface between P and Q moves to the right after heating

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A very large metal plate of thickness

and thermal conductivity

is cooled by a stream of air at temperature

with a heat transfer coefficient

, as shown in the figure. The centerline temperature of the plate is

Diagram for Mechanical Engineering question 47

In which of the following case(s) can the lumped parameter model be used to study the heat transfer in the metal plate?

Your answerSelect all correct options. You can choose more than one.

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The smallest perimeter that a rectangle with area of 4 square units can have is _____ units.

(Answer in integer)

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2023 · Paper 1

Question 46

Question 47

Question 48