Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer
Q. For very great pressures, viscosity of moss gases and liquids
a. Remain same
b. Increases
c. Decreases
d. Shows erratic behavior
Q. The angle of contact in case of a liquid depends upon
a. The nature of the liquid and the solid
b. The material which exists above the free surface of the liquid
c. Both of die above
d. Any one of the above
Q. Water is _________ liquid.
a. A compressible
b. An incompressible
c. Both A and B
d. None of these
Q. Bernoulli's equation is applied to
a. Venturimeter
b. Orifice meter
c. Pitot tube
d. All of these
Q. Rain drops are spherical because of
a. Viscosity
b. Air resistance
c. Surface tension forces
d. Atmospheric pressure
Q. Cavitation can take place in case of
a. pelton wheel
b. francis turbine
c. reciprocating pump
d. centrifugal pump
Q. Air vessel in reciprocating pump is used
a. to obtain continuous supply of water at uniform rate
b. to reduce suction head
c. to increase the delivery head
d. none of the above
Q. During suction stroke of a reciprocating pump, the separation may take place
a. at the end of the suction stroke
b. in the middle of the suction stroke
c. in the beginning of the suction stroke
d. non off the above
Q. During delivery stroke of a reciprocating pump, the separation may take placeP
a. ge 5 of 7a) at the end of the suction stroke
b. in the middle of the suction stroke
c. in the beginning of the suction stroke
d. non off the above
Q. 14 Discharge of centrifugal pump is
a. directly proportional to diameter of its impeller
b. inversely proportional to diameter of its impeller
c. directly proportional to (diameter)2 of its impeller
d. inversely proportional to (diameter)2 of its impeller
Q. The ratio of quantity off liquid discharged per second from the pump to the quantity of liquidpassing per second through the impeller is known as
a. manometric efficiency
b. mechanical efficiency
c. overall efficiency
d. volumetric efficiency
Q. Multi-stage centrifugal pump are used to
a. give high discharge
b. produce high heads
c. pump viscous fluids
d. all of these
Q. The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of15 meters at 725r.p.m., is
a. 24.8r.p.m.
b. 48.2r.p.m.
c. 82.4r.p.m.
d. 248r.p.m.
Q. The specific speed from a centrifugal pump indicates that the pump is
a. slow speed at radial flow at outlet
b. medium speed with radial flow at outlet
c. high speed with radial flow at outlet
d. high speed with axial flow at outlet