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.Management Sciences
Category: Fluid Mechanics for Chemical
When the water is warm, the height to which it can be lifted by a pump_________________?
A. Decreases due to reduced viscosity
B. Decreases due to reduced vapour pressure
C. Increases due to increased vapour pressure
D. Decreases due to increased frictional resistance
Differential manometer measures the____________________?
A. Atmospheric pressure
B. Sub-atmospheric pressure
C. Pressure difference between two points
D. None of these
Laminar flow is characterised by the nonexistence of_________________?
A. Pressure fluctuation
B. Eddies
C. Deviating velocities
D. All A., B. & C.
A Rotameter works on the principle of _______________ pressure drop?
A. Constant
B. Variable
C. Both A. & B.
D. Neither A. nor B.
Air vessel provided in a reciprocating pump__________________?
A. Smoothens the flow by avoiding pulsations
B. Increases the volumetric efficiency of the pump
C. Saves the pump from the danger of cavitation
D. None of these
Which of the following is the most common pump for pumping either raw sewage or sludge ?
A. Electromagnetic pump
B. Centrifugal pump
C. Reciprocating pump
D. Gear pump
Toothpaste is a__________________?
A. Bingham plastic
B. Pseudo-plastic
C. Newtonian liquid
D. Dilatent
Critical velocity in a pipe flow_________________?
A. Increases as fluid viscosity increases
B. Increases as pipe diameter increases
C. Independent of fluid density
D. None of these
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