Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 1
31.
The maximum number of jets, generally, employed in an impulse turbine without jet interference are
two
four
six
eight
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
Q = π.D.Vf
Q = π.b.Vf
Q = π.D.b.Vf
Q = D.b.Vf
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
kinetic head
velocity head
manometric head
static head
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.