Top 250+ Solved Fluid Mechanics and Machinery MCQ Questions Answer
Q. Discharge capacity of the reciprocating pump is that of the centrifugal pump.
a. higher than
b. lower than
c. same as
d. unpredictable
Q. Which pump is more suitable for an application where very high pressure is required to be developed at moderate discharge?
a. reciprocating pump
b. centrifugal pump
c. turbine
d. none of the mentioned
Q. The process of filling the liquid into the suction pipe and pump casing up to the level of delivery valve is called as
a. filling
b. pumping
c. priming
d. leveling
Q. Most widely used sanitary pumps in the dairy industry are?
a. centrifugal pump
b. liquid ring pump
c. positive displacement pump
d. suction pump
Q. Main application of centrifugal pump is in which of the following?
a. low viscosity products
b. heavily aerated liquids
c. gentle treatment with high viscosity
d. water treatment
Q. Main application of liquid ring pump is in which of the following?
a. low viscosity products
b. heavily aerated liquids
c. gentle treatment with high viscosity
d. water treatment
Q. Main application of positive displacement pump is in which of the following?
a. low viscosity products
b. heavily aerated liquids
c. gentle treatment with high viscosity
d. water treatment
Q. Which of the following pump suitable for handling AMF in the dairy industry?
a. centrifugal pump
b. liquid ring pump
c. diaphragm pump
d. peristaltic pumps
Q. What is the water flow direction in the runner in a Francis turbine?
a. axial and then tangential
b. tangential and then axial
c. radial and then axial
d. axial and then radial
Q. Which of the following is true in case of flow of water before it enters the runner of a Francis Turbine?
a. available head is entirely converted to velocity head
b. available head is entire converted to pressure head
c. available head is neither converted to pressure head nor velocity head
d. available head is partly converted to pressure head and partly to velocity head
Q. Which of the following profiles are used for guide vanes to ensure smooth flow without separation?
a. rectangular
b. bent rectangular
c. elliptical
d. aerofoil
Q. In which of the following type of runners the velocity of whirl at inlet is greater than the blade velocity?
a. such a case is practically impossible
b. slow runner
c. medium runner
d. fast runner
Q. 2 AXIAL, RADIAL AND MIXED FLOW TURBINES.
a. guide vane angle at inlet
b. blade angle at inlet
c. vane angle at inlet
d. blade angle at outlet
Q. In the figure shown below, which of the following type of runners has the blade curvature as shown in the above figure (The arrow denotes direction of blade motion)?
a. information insufficient to determine
b. slow runner
c. medium runner
d. fast runner