Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer
Q. Manometer is used to measure
a. Pressure in pipes, channels etc.
b. Atmospheric pressure
c. Very low pressure
d. Difference of pressure between two points
Q. The flow in which conditions do not change with time at any point, is known as
a. One dimensional flow
b. Uniform flow
c. Steady flow
d. Turbulent flow
Q. A nozzle placed at the end of a water pipe line discharges water at a
a. Low pressure
b. High pressure
c. Low velocity
d. High velocity
Q. The pressure of fluid due to hammer blow is
a. Directly proportional to density of fluid
b. Inversely proportional to density of fluid
c. Directly proportional to (density)1/2 of fluid
d. Inversely proportional to (density)1/2 of fluid
Q. In order to measure the flow with a Venturimeter, it is installed in
a. Horizontal line
b. Inclined line with flow upwards
c. Inclined line with flow downwards
d. Any direction and in any location
Q. If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will befollowing cm of water
a. 51 cm
b. 50 cm
c. 52 cm
d. 52.2 cm
Q. According to equation of continuity,
a. w1a1 = w2a2
b. w1v1 = w2v2
c. a1v1 = a2v2
d. a1/v1 = a2/v2
Q. When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressureis the __________ of the two pressures.
a. Sum
b. Difference
c. Arithmetic mean
d. Geometric mean
Q. The mercury does not wet the glass. This is due to the property of the liquid known as
a. Cohesion
b. Adhesion
c. Viscosity
d. Surface tension
Q. When the pressure intensity at a point is more than the local atmospheric pressure, then thedifference of these two pressures is called
a. Gauge pressure
b. Absolute pressure
c. Positive gauge pressure
d. Vacuum pressure
Q. A pipe of length more than double the diameter of orifice fitted externally or internally to theorifice is called a
a. Notch
b. Weir
c. Mouthpiece
d. Nozzle
Q. An open tank containing liquid is moving with an acceleration on an inclined plane. Theinclination of the free surface of the liquid will be __________ to the acceleration of the tank.
a. Equal to
b. Directly proportional
c. Inversely proportional
d. None of these
Q. Falling drops of water become spheres due to the property of
a. Surface tension of water
b. Compressibility of water
c. Capillarity of water
d. Viscosity of water