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43.

Coefficient of velocity of venturimeter

A.	is independent of Reynolds number	B.	decreases with higher Reynolds number
C.	is equal to the coefficient of discharge of venturimeter	D.	none of the above

44.

The pressure at the summit of a syphon is

A.	equal to atmospheric	B.	less than atmospheric
C.	more than atmospheric	D.	none of the above

45.

Ay between two stream lines represents

A.	velocity	B.	discharge
C.	head	D.	pressure

46.

Coefficient of velocity for Borda's mouth piece running full is

A.	0.611	B.	0.707
C.	0.855	D.	1

47.

Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is

A.	slightly less	B.	slightly more
C.	nearly half	D.	equal

48.

The major loss of energy in long pipes is due to

A.	sudden enlargement	B.	sudden contraction
C.	gradual contraction or enlargement	D.	friction

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