40. The flow in the pipe is laminar if :
(ಗಿ) Reynold number is equal to 2,500 (3) Reynold number is equal to 4,000
(0 Reynold number is more than 2,500 (D) None of the above
41. Venturimeter is used to measure :
(4) Discharge ) Pressure at a point
(C) Average velocity യ Velocity at a point
42. When two bodies are in thermal equilibrium with a third body, they are also in thermal
equilibrium with each other. This statement is called :
(4) Zeroth law of thermodynamics (B) 2 ]aw of thermodynamics
(C) 151 of thermodynamics (D) Gaylussac's law
43. The basic law of heat conduction is called :
(5) Newton's law of cooling (B) Kirchoff's law
(C) Fourier's law (D) Stefan's law
44. A boiler was purchased, erected and installed with an amount of Rs. 52,000/-. The scrap
value estimated after 20 years is Rs.15,000/- the rate of depreciation is :
(ಗಿ) Rs. 37,000/~ (B) Rs. 1,850/
(0 Rs. 2,600/ (D) ೫. 750/-
45. The ratio of the specific weight of a liquid to specific weight of a standard fluid is known as :
(ക) Specific volume (2) Weight density
(C) Specific gravity യ Viscosity
ತೌ The centre to centre distance between two consecutive rivets in ೩ row is called :
(4) Margin (B) Pitch
(0 Back pitch (D) Diagonal pitch
47. Kaplan turbine is :
(A) a high head mixed flow turbine (B) an outward flow reaction turbine
(C) an impulse inward flow turbine (D) axial flow reaction turbine
48. The position of centre of gravity of ‏د‎ hemisphere एव radius 'r' lies on the central radius at a
distance :
@A) ௨8௬ (3) 1/2 ८
(0 3⁄4 ८ (0) 8/8 ८
154/2015 8 A