Q. 10 For the given statements: I Mating spur gear teeth is an example of higher pair II A revolute joint is an example of lower pair Indicate the correct answer. (A) Both I and II are false (B) I is true and II is false (C) I is false and II is true (D) Both I and II are true Q. 12 Biot number signifies the ratio of (A) convective resistance in the fluid to conductive resistance in the solid (B) conductive resistance in the solid to convective resistance in the fluid (C) inertia force to viscous force in the fluid (D) buoyancy force to viscous force in the fluid Q. 13 (A) Entropy (C) Exergy The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference environment, is called (B) Enthalpy ham (D) Rothalpy Q. 14 Consider a two-dimensional laminar flow over a long cylinder as shown in the figure below. W U 3 T The free stream velocity is U. and the free stream temperature T is lower than the cylinder surface temperature Ts. The local heat transfer coefficient is minimum at point (A) 1 (C) 3 (B) 2 (D) 4