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37.

Which of the following is used to measure the discharge ?

A.	current meter	B.	venturimeter
C.	pitot tube	D.	hotwire anemometer

38.

Select the incorrect statement.

A.	The pressure intensity at vena contracta is atmospheric.	B.	Contraction is least at vena contracta.
C.	Stream lines are parallel throughout the jet at vena contracta.	D.	Coefficient of contraction is always less than one.

39.

Select the incorrect statement.

A.	The pressure intensity at vena contracta is atmospheric.	B.	Contraction is least at vena contracta.
C.	Stream lines are parallel throughout the jet at vena contracta.	D.	Coefficient of contraction is always less than one.

40.

Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

A.	5%	B.	10%
C.	15%	D.	20%

41.

The discharge through a V- notch varies as

A.	H1/2	B.	H3'2
C.	H5/2	D.	H5'4 where H is hea

42.

Which of the following is an incorrect statement ?

A.	Coefficient of contraction of a venturimeter is unity.	B.	Flow nozzle is cheaper than venturimeter but has higher energy loss.
C.	Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined.	D.	d) None of the above statement is correct.

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