Engineering :: Hydraulics and Fluid Mechanics
71.
The centre of gravity of the volume of the liquid displaced is called
A. centre of pressure
B. centre of buoyancy
C. metacentre
D. none of these
Answer: B
Explanation:
72.
The centre of buoyancy is the centre of area of the immersed body.
Answer: A
Explanation:
73.
The buoyancy depends upon the
A. weight of the liquid displaced
B. pressure with which the liquid is displaced
C. viscosity of the liquid
D. compressibility of the liquid
Answer: A
Explanation:
74.
A nirform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is
A. 3.53 kN
B. 33.5 kN
C. 35.3 kN
D. none of these
Answer: C
Explanation:
75.
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
A. centre of pressure
B. centre of gravity
C. centre of buoyancy
D. metacentre
Answer: D
Explanation:
76.
The metacentric height is the distance between the
A. centre of gravity of the floating body and the centre of buoyancy
B. centre of gravity of the floating body and the metacentre
C. metacentre and centre of buoyancy
D. original centre of buoyancy and new centre of buoyancy
Answer: B
Explanation:
77.
The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced.
Answer: A
Explanation:
78.
The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
A. The bodies A and B have equal stability
B. The body A is more stable than body B
C. The body B is more stable than body A
D. The bodies A and B are unstable
Answer: C
Explanation:
79.
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
A. neutral equilibrium
B. stable equilibrium
C. unstable equilibrium
D. none of these
Answer: B
Explanation:
80.
If a body floating in a liquid does not return back to its original position, and heels farther away when given a small angular displacement, the body is said to be in neutral equilibrium.
Answer: B
Explanation:
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