GATE AE 2026 Paper 1 — page 18

Complete GATE AE 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 18 of 22

Isobutane (C₄H₁₀) is burnt completely in pure oxygen as per the reaction given below. Given that the standard heats of formation (in kcal/mole) of isobutane, carbon dioxide, and water vapour are −31.49, −94.052, and −60.150, respectively, the heat of reaction is ________ kcal (rounded off to 2 decimal places).

C₄H₁₀ + 6.5 O₂ → 4 CO₂ + 5 H₂O

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A furnace of 250 MW rating is used to melt and raise the temperature of aluminum from 25 °C to 900 °C. Aluminum has a solid-state specific heat, latent heat, and liquid-state specific heat of 0.9 kJ/kg-K, 390 kJ/kg, and 1.08 kJ/kg-K, respectively, and the furnace has 70% efficiency. The melting point of aluminum is 660 °C. The amount of aluminum that can be processed per hour is ________ kg (rounded off to 1 decimal place).

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For an airfoil section the pitch moment coefficient is determined about a reference point that is 0.3 times the chord behind the leading edge. It varies with the lift coefficient as shown in the table below. The distance of the aerodynamic center from the leading edge of the airfoil as a fraction of the chord is ________ (rounded off to one decimal place).

	0.2	0.4	0.6	0.8
	−0.02	0	0.02	0.04

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2026 · Paper 1

Question 52

Question 53

Question 54