Q: In flowing liquids pitot tubes are used measure

(a) :  discharge
(b) :  pressure
(c) :  velocity
(d) :  depth.
(e) :  None of these
Answer:  velocity

Q: The acceleration f required to accelerate a rectangular tank containing water horizontally so that the slope of its free surface is 45°, is

(a) :  g/2
(b) :  g
(c) :  2 g
(d) :  2.5 g
(e) :  None of these
Answer:  3 g.

Q: Barometres are used to measure

(a) :  pressure in water channels, pipes etc.
(b) :  difference in pressure at two points
(c) :  atmospheric pressure
(d) :  very low pressure
(e) :  very high pressure.
Answer:  atmospheric pressure

Q: The flow in open channel is said to be critical if the Froude number is :

(a) :  less than 1.0
(b) :  equal to 1.0
(c) :  greater than 1.0
(d) :  greater than 1.2
(e) :  None of these
Answer:  equal to 1.0

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