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1551.

The device used for measuring discharge of irrigation channel, well or canal outlet is called:

A.	Weir	B.	Notch
C.	Meter gate	D.	All are correct

1552.

A sheet of water, which overflows a weir, is:

A.	Head	B.	Nape
C.	Both (a) and (b)	D.	None of these

1553.

The basic formula to calculate the discharge through weir is:

A.	Q = CLH	B.	Q = CLHm
C.	Q = LHm	D.	None of these

1554.

A contracted trapezoidal weir in which each side of the notch has a slope of horizontal 1 to 4 vertical is:

A.	Trapezoidal weir	B.	Cipoletti weir
C.	Rectangular weir	D.	V-notch

1555.

A cipoletti weir has a breadth of 60 cm at its crest and head of water flowing over the crest is 30 cm, the discharge of weir will be:

A.	180 lit/sec	B.	180 lit/min
C.	186 lit/sec	D.	183 lit/min

1556.

An open channel flow in which flow characteristic at any poi8nt do not change with:

A.	Steady flow	B.	Unsteady flow
C.	Uniform flow	D.	Non-uniform flow

1557.

The common conservation measures for agricultural lands are:

A.	Bunding and broad based terracing	B.	Bench terracing
C.	Contour trenching	D.	All are correct

1558.

The velocity of flow in open channel is determined by:

A.	Darcy's formula	B.	Manning's formula
C.	Both (a) and (b)	D.	None of these

1559.

A brick or stone masonry linings are recommended for lining watercourses from channels where discharge is:

A.	Less than 30 lit/sec	B.	More than 30 lit/min
C.	Only 30 lit/sec	D.	None of these

1560.

A structure used to carry out irrigation water across the stream, canals, gullies and other natural depression is:

A.	Weir	B.	Notch
C.	Flume	D.	Gate