A. It is not very accurate
B. It is very costly
C. Most of the pressure drop is not recoverable
D. It is not suitable for measuring gas flow
Related Mcqs:
- The co-efficient of discharge of an orificemeter is a function of ________________?
A. Reynolds number at the orifice
B. Ratio of orifice dia to pipe dia
C. Both A. and B.
D. None of the above parameters, and has a constant value of 0.61 - With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss_______________?
A. Decreases
B. Increases
C. Remain constant
D. Increases linearly - 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 - Power loss in an orificemeter is _____________ that in a Venturimeter?
A. Less than
B. Same as
C. More than
D. Data insufficient, cannot be predicted - Vena-contracta formed during flow of a liquid through an orificemeter has__________________?
A. Minimum liquid cross-section
B. More diameter compared to orifice diameter
C. Minimum velocity of fluid stream
D. None of these - Vena-contracta pressure tapping is at a distance _______________ from the position of an orificemeter fitted in a pipe of internal diameter ‘d’ ?
A. d
B. 0.5 d
C. 2d
D. 4d - Location of vena-contracta in an orificemeter does not depend upon the________________?
A. Type of orifice
B. Density, viscosity & compressibility of the fluid
C. Ratio of pipe diameter to orifice diameter
D. Pipe roughness - Venturimeter and orificemeter measures the _____________ of the fluid?
A. Pressure
B. Maximum velocity
C. Average velocity
D. Point velocity - Power required for mixing Newtonian fluids is a function of the _________________?
A. Speed of impeller, diameter of impeller & viscosity
B. Density & viscosity of fluid only
C. Density of fluid, viscosity of fluid & impeller dia only
D. None of these - Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft?
A. 40
B. 34
C. 8
D. 37
