Engineering :: Hydraulics and Fluid Mechanics

@ : Home > Civil Engineering > Hydraulics and Fluid Mechanics

81.

If a body floating in a liqid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in

A.	neutral	B.	stable
C.	unstable

82.

A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

A.	coincides with its centre of gravity	B.	lies above its centre of gravity
C.	lies below its centre of gravity	D.	lies between the centre of buoyancy and centre of gravity

83.

A body floating in a liquid is said to be in a stable equilibrium, if its metacentre coincides with its centre of gravity.

Agree

Disagree

84.

A submerged body is said to be in a stable equilibrium, if its centre of gravity

A.	coincides with	B.	lies below
C.	lies above

85.

The metacentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

A.	4.1s	B.	5.2s
C.	10.4s	D.	14.1s

86.

The quantity of a liquid flowing per second through a section of a pipe or a channel is called discharge and is measured in cumecs (m3/s).

True

False

87.

One cubic metre of water weighs

A.	100 litres	B.	250 litres
C.	500 litres	D.	1000 litres

88.

One litre of water occupies a volume of

A.	100 cm3	B.	250 cm3
C.	500 cm3	D.	1000 cm3

89.

When a liquid is flowing through a pipe, the velocity of the liquid is

A.	maximum at the centre and minimum near the walls	B.	minimum at the centre and maximum near the walls
C.	zero at the centre and maximum near the walls	D.	maximum at the centre and zero near the walls

90.

If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections.

True

False