Previous Years’ Fluid Mechanics Objective Questions

11. The overall efficiency of a Pelton turbine is 70%. If the mechanical efficiency is 85%, then find the hydraulic efficiency?

A. 59.5%

B. 72.3%

C. 81.5%

D. 82.4%

12. What is the dimension of the Kinematic viscosity of a fluid?

A. L²T^-1

B. LT^-2

C. ML^-1T^-1

D. ML^-2T^-2

13. The head loss in turbulent flow in a pipe varies-

Read More- Thermodynamics: Objective Questions Answers

A. directly as the velocity

B. approximately as the square of the velocity

C. inversely as the square of the diameter

D. inversely as the square of the velocity

14. The vanes of a centrifugal pump are generally-

A. twisted

B. radial

C. Curved forward

D. curved backward

15. Which property of mercury is the main reason for its use in barometers?

A. High density

B. Very low vapor pressure

C. Low compressibility

D. Negligible capillarity effect