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Reynolds number is the ratio of
A) Viscous forces to gravity forces B) Inertial forces to viscous forces
C) Viscous forces to inertial forces D) Inertial forces to gravity forces

Spouting velocity is

A) Ideal velocity of jet

B) 50% of ideal velocity of jet

C) Actual velocity of jet

D) Velocity of the jet under some specified conditions

A Francis turbine working at 300 rpm has a unit speed of 50 rpm. What is the effective
head under which this turbine can be operated ?

A) 16m B) 6m

C) 36m D) 60m

The internal energy of an ideal gas is a function of
A) Temperature and pressure B) Volume and pressure
C) Entropy and pressure D) Temperature only

Discharge of a centrifugal pump is

A) Directly proportional to velocity of flow

B) Inversely proportional to velocity of flow

C) Directly proportional to square of the velocity of flow
D) Inversely proportional to square of velocity of flow

What will be the ratio of head loss of a laminar incompressible flow in a horizontal
circular pipe with average velocity V and pipe diameter D to that with average velocity
2V and pipe diameter D/2 ? The fluid and pipe length are same.

A) 1 B) 4

08 0) 16

The boundary layer thickness of a lamina flow over a flat plate at a distance of 0.25 m
from the leading edge is 8 mm. Then what will be the thickness at a distance of 0.75 ന?
A) 13.85 B) 15.25

C) 11.45 D) 10.15

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