The velocity in a large canal or channel measured at a depth of ___________________ gives the mean velocity using the current meter?

A. 0.6m
B. 0.5m
C. 0.6 depth
D. 0.5 depth

The last length of the river before it falls into the sea is known as __________________?

A. Mountainous stage
B. Trough stage
C. Delta stage
D. Sub-mountainous stage

The forces coming over the gravity dam is mainly resisted by ___________________?

A. Water pressure
B. Uplift pressure
C. Self weight of the dam
D. All the above

The precipitation that occurs because of frontal disturbances during the movement of barometric low pressure is called ____________________?

A. Hurricane
B. Cyclonic
C. Orographic
D. Convective

An instrument used for measuring pressure head, generally made up of a small pipe tapped into the side of conduit is called ___________________?

A. Pilot tube
B. Piezometer
C. Manometer
D. All are correct

hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?

A. 5 mm diameter
B. 10 mm diameter
C. 15 mm diameter
D. 20 mm diameter

The depth of root zone for rice crop is about___________________?

A. 70 cm
B. 80 cm
C. 90 cm
D. 100 cm

A flow of water for a certain discharge when total energy of flow i.e. sum of potential, kinetic and pressure energies is minimum is called_______________________?

A. Shooting flow
B. Critical flow
C. Sub-critical flow
D. Normal flow

The angle between a head regulator and entrance of water, for smooth entry of water in a canal is kept as _________________?

A. 90°
B. 100°
C. 110°
D. 120°

A closed conduct or barrel used used for supplying water under high pressure to a turbine to generate electricity is called __________________?

A. A tunnel
B. Penstock
C. Chute
D. Syphon