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1611.

Which is the recording type of rain gauge?

A.	Tipping bucket type	B.	Weighing bucket
C.	Natural siphon type	D.	All are correct

1612.

Control of gully erosion can be achieved by sue of:

A.	Spurs	B.	Wooden plank dams
C.	Retaining wall	D.	None of these

1613.

Double mass curve technique is used for checking the:

A.	Consistency of a record	B.	Inconsistency of a record
C.	Both (a) and (b)	D.	None of these

1614.

Mass curve of a rainfall of a storm is plotted between:

A.	Accumulated precipitation and time in chronological order	B.	Accumulated rainfall intensity and time
C.	Rainfall intensity and time in chronological order	D.	None of these

1615.

A hyetograph is plot of:

A.	Rainfall intensity versus time	B.	Rainfall depth versus duration
C.	Cumulative rainfall versus time	D.	Discharge versus time

1616.

To convert the point of rainfall value at various stations into an average value over a catchment area is possible by:

A.	Arithmetical-mean method	B.	Thiessen-polygon methon
C.	Isohyetal method	D.	All are correct

1617.

A isohyetal is a line joining point having:

A.	Equal barometric pressure	B.	Equal evaporation value
C.	Equal rainfall depth in given duration	D.	All are correct

1618.

Evaporation from water bodies and soil masses together with the transpiration from vegetation is termed as:

A.	Evapotranspiration	B.	Water loss
C.	Total loss or total evaporation	D.	All are correct

1619.

The rate of evaporation is dependent on:

A.	Vapour pressure at the water surface and air above	B.	Air and water temperature and wind speed
C.	Atmospheric pressure and quality of water	D.	All are correct

1620.

The ISI standard pan evaporimeter is the:

A.	Same as US class A an	B.	Has average pan coefficient 0.7
C.	Both (a) and (b)	D.	None of these