Top 550+ Solved Fluid Mechanics and Hydraulic Machines MCQ Questions Answer
Q. Which of the following is not a dimensionless quantity?
a. Specific gravity
b. Pressure coefficient
c. Darcy weisbach friction factor
d. Kinematic viscosity
e. None of the above
Q. Uniform flow in a channel is characterised by which of the following statements
a. Total energy remains constant along the channel
b. Total energy line either rises or falls depending on Froude number
c. 3
d. Gradient of the total energy is parallel to the channel bed
e. Specific energy varies along the length of the channel
Q. In working out the reltion for the specific speed, the assumption is made that
a. All pumps have similar ratios in all dimensions
b. All pumps of a given type are similar
c. All pumps of a given type are geometrically similar
d. All pumps are similr
e. All pumps are hydraulically similar
Q. The assumptions made in the most familiar form of Bernoulli's equation is that
a. Fluid is non-viscous
b. Fluid is homogeneous
c. All the above
d. Flow is steady
e. Flow is along the streamlines
Q. Eulers dimensionless number relates
a. Buoyant force and inertia force
b. Pressure force and inertia force
c. Inertia force and gravity force
d. Viscous force and inertia force
e. Buoyant force and viscous force
Q. 1 mm Hg pressure is equivalent to
a. 1.333 x 102 N/m2
b. 1.333 x 10-3 bar
c. 1.3158 x 10-3 atm
d. 1.332 x 102 kg/m-sec2
e. Any of the above
Q. In a completely turbulent flow the head loss
a. decreases with wall roughness
b. increases with the velocity squared
c. increases with flow rate
d. increases with the velocity
e. increases with diameter
Q. The equation of continuity of flow is based on the principle of conservation of
a. Momentum
b. Mass
c. Energy
d. All above
e. None of the above
Q. The highest voltage at which power is transmitted in India is
a. 440 kV
b. 400 kV
c. 11 kV
d. 132 kV
e. 33 kV
Q. The line of action of the buoyant force acts through the
a. Centroid of the displaced volume of fluid
b. Centroid of gravity of any floating body
c. Centroid of the volume of fluid vertically above the body
d. Centroid of the horizontal projection of the body
e. Centre of gravity of any submerged body
Q. Select the pressures that are equivalent
a. 4.3 psi, 10 ft H2O, 20.3 in. Hg
b. 10 psi, 23.1 ft H2O, 4.91 in. Hg
c. 4.33 psi, 10 ft H2O, 8.83 in. Hg
d. 10 psi, 4.33 ft H2O, 20.3 in. Hg
e. 10 psi, 20.3 ft H2O, 23.1 in. Hg
Q. Which type of turbine is different from others?
a. Banki turbine
b. Kaplan turbine
c. Girard turbine
d. Pelton wheel
e. Jonval turbine
Q. A barometer is used to measure
a. Very low pressures
b. Very high pressures
c. Pressure of fluid in a pipe line
d. Atmospheric pressure
e. Pressure differeuce between two points
Q. The upper surface of the weir over which water flows is known as
a. Contracta
b. Crest
c. Nappe
d. Sill
e. Vein