61
Choose the set of pressure intensities that are equivalent.
A)
4.33 psi, 10 ft. of water, 8.83 inches of Hg
B)
4.33 psi, 10 ft. of water, 20.7 inches of Hg
C)
10 psi, 19.7 ft. of water, 23.3 inches of Hg
D)
10 psi, 19.7 ft. of water, 5.3 inches of Hg
Answer & Solution
Answer: Option
A
62
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss
A)
Decreases
B)
Increases
C)
Remains constant
D)
Increases linearly
Answer & Solution
Answer: Option
C
63
Laminar flow is characterised by the nonexistence of
A)
Pressure fluctuation
B)
Eddies
C)
Deviating velocities
D)
All of the above
Answer & Solution
Answer: Option
D
A)
A constant velocity with no acceleration
B)
A fluctuating velocity
C)
Attained after moving one-half of total distance
D)
None of these
Answer & Solution
Answer: Option
A
65
A piezometer opening measures the __________ fluid pressure.
A)
Static
B)
Undisturbed
C)
Total
D)
Dynamic
Answer & Solution
Answer: Option
B
66
The centre of pressure is
A)
Always below the centroid of the area
B)
Always above the centroid of the area
C)
A point on the line of action of the resultant force
D)
At the centroid of the submerged area
Answer & Solution
Answer: Option
C
67
The continuity equation
A)
Is independent of the compressibility of the fluid
B)
Is dependent upon the viscosity of the fluid
C)
Represents the conservation of mass
D)
None of these
Answer & Solution
Answer: Option
C
68
The friction factor is
A)
Always inversely proportional to the Reynolds number
B)
Not dimensionless
C)
Not dependent on the roughness of the pipe
D)
None of these
Answer & Solution
Answer: Option
D
69
The lift of a ballon is
A)
Increased, as it rises to a higher altitude
B)
Due to the weight of the atmospheric air, that it displaces
C)
Not dependent on the temperature of the atmosphere
D)
None of these
Answer & Solution
Answer: Option
B
70
The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.
A)
Inlet tip of a blade curves in a direction opposite to that
B)
Outlet tip of a blade curves in a direction opposite to that
C)
Inlet tip of a blade is towards the direction
D)
Outlet tip of a blade is towards the direction
Answer & Solution
Answer: Option
D
