GATE ME 2026 Paper 1 — page 15

Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.

A very long fin of a uniform square cross-section is replaced by another very long fin of a uniform circular cross-section of the same material. Assume uniform and identical heat transfer coefficient for both the fins. If the diameter of the circular fin is equal to the side length of the square fin, then the ratio of heat transfer rates before and after the replacement is

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For an ideal regenerative Rankine cycle, as shown in the figure below, which one of the following options is the correct representation of temperature-entropy (T-s) diagram?

Diagram for Mechanical Engineering question 44

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Diagram for Mechanical Engineering question 44 (figure 2)

Diagram for Mechanical Engineering question 44 (figure 3)

Diagram for Mechanical Engineering question 44 (figure 4)

Diagram for Mechanical Engineering question 44 (figure 5)

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Consider the Euler variables of polyhedral objects namely, P1, P2, P3, and P4 as given in the table below.

Polyhedral objects	Faces (F)	Edges (E)	Vertices (V)	Bodies (B)
P1	6	12	8	1
P2	5	8	5	1
P3	5	12	8	1
P4	10	24	16	1

Which one of the following options is NOT a topological valid closed polyhedral object as per Euler’s law?

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2026 · Paper 1

Question 43

Question 44

Question 45