Related Questions

The discharge co-efficient for an orificemeter does not depend upon the
A Pipe length
B Ratio of pipe diameter to orifice diameter
C Type of orifice & the Reynolds number
D Pipe diameter
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
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 0.5d
C 2d
D 4d
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
The most serious disadvantage of an orificemeter is that
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
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
Venturimeter and orificemeter measures the __________ of the fluid.
A Pressure
B Maximum velocity
C Average velocity
D Point velocity
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 Remains constant
D Increases linearly
If there are no externally induced flow velocities, then the Nusselt Number (Nu) does not depend upon
A Prandtl number
B Reynolds number
C Grashof Number
D none of the
When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon
A Resistance of the coil
B Motion of the magnet
C Number of turns of the coil
D Pole strength of the magnet

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