500 Best Hydraulics MCQ
Q153). The pressure less than atmospheric , pressure, is known
a).suction pressure
b).vacuum pressure
c).negative gauge pressure
d).all the above.
Correct Answer:
all the above.
Explanation:
Q154). A rise or fall of liquid in a glass tube of a very small diameter when dipped is
a).directly proportional to the force per unit length of periphery
b).direcly proportional to the sine of the angle of contact
c).directly proportional to the specific weight of liquid
d).inversely proportional to the diameter of the glass tube.
Correct Answer:
directly proportional to the specific weight of liquid
Explanation:
Q155). To measure very low pressure, we use
a).barometers
b).piezometers
c).manometers
d).differential manometers.
Correct Answer:
manometers
Explanation:
Q156). The discharge through an internal mouth piece is more if its length is
a).<1/2 diameter
b).< diameter
c).≥ diameter
d).none of these.
Correct Answer:
≥ diameter
Explanation:
Q157). A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is
a).10° 5′
b).10° 10′
c).10° 15′
d).10° 20′
Correct Answer:
10° 15′
Explanation:
Q158). Pick up the correct statement from the following :
a).In incompressible flow the density of a fluid remains constant
b).In compressible flow, the density of a fluid changes from point to point
c).In uniform flow, the velocity of a fluid does not change with respect to length of flow direction
d).All the above.
Correct Answer:
All the above.
Explanation:
Q159). Pick up the incorrect statement from the following :
a).In radial flow, fluid flows such that pressure and velocity at any point change with respect to its distance from the central axis
b).In radial flow, velocity of flow is in a radial direction
c).In radial flow, flow may take place radially inward to or outward from the centre
d).In radial flow, flow is one dimensional with stream lines parallel.
Correct Answer:
In radial flow, flow is one dimensional with stream lines parallel.
Explanation:
Q160). Chezy’s formula is used to determine
a).head loss due to friction in pipe
b).velocity of flow in pipe
c).velocity of flow in open channels
d).none of these.
Correct Answer:
velocity of flow in open channels
Explanation: