A. Small differential
B. Atmospheric
C. Absolute
D. Gage
Related Mcqs:
- A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be _______________ cms?
A. 17
B. 42
C. 84
D. 1.8 - Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water column in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm)?
A. H
B. 12.6 H
C. 13.6 H
D. 14.6 H - Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is _____________ mm?
A. 4
C. > 12.5
D. < 10 - The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which “sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis”. The centre of pressure of a rectangular surface (of width ‘w’) immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid) ?
A. 1/(y/3)
B. 2y/3
C. 1/(y/4)
D. 3y/4 - Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an _____________ manometer?
A. U-tube water
B. U-tube mercury
C. Inclined tube mercury
D. Inclined tube water - The ______________ pressure is measured by a static tube?
A. Dynamic
B. Static
C. Total
D. None of these - A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is___________________?
A. 5
B. 14.1
C. 56.22
D. 28.2 - Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is________________?
A. 90
B. 60
C. 45
D. 30 - Two liquids manometer is used for measuring small pressure differences in___________________?
A. Liquids
B. Gases
C. Mixture of hydrocarbons
D. None of these - For the manometer set up shown in the figure, the pressure difference PA – PB is given by_________________?
A. (ρH – ρair)gH
B. (ρH – ρL)gH
C. (ρH – ρL) gH + (ρL – ρair) . g(L – H)
D. (ρH – ρL) gL + (ρL – ρair)gH
Mcq Added by: admin