Mechanical Engineering - Hydraulic Machines - Discussion
Discussion Forum : Hydraulic Machines - Section 1 (Q.No. 6)
6.
Discharge of a centrifugal pump is
Answer: Option
Explanation:
Discharge of a centrifugal pump is directly proportional to (Diameter)^2 of its impeller.
Head of a centrifugal pump is directly proportional to (Diameter)^2 of its impeller.
Power Developed of a centrifugal pump is directly proportional to (Diameter)^4 of its impeller.
Discussion:
50 comments Page 3 of 5.
Engr Aamir said:
6 years ago
If Q=Av then Q is directly or inversely proportional?
Fouziahussain said:
6 years ago
Q=(pi)DbV.
D=Diameter of impeller.
B =Width.
V= Velocity of flow.
D=Diameter of impeller.
B =Width.
V= Velocity of flow.
Hrushi Nikam said:
5 years ago
When we calculate for specific speed we take the assumption of B being proportional to Diameter. So, option C is correct.
Samuel said:
3 years ago
I think, here It should be Discharge Head.
And accordingly, option C would be correct.
And accordingly, option C would be correct.
Prem vilas hatagale said:
7 months ago
It's directly proportional to (diameter)2 of its impeller.
Parameswararao said:
9 years ago
Is directly proportional to the square of the diameter (refer R. K. Rajput textbook pg no. 1219).
RAHUL said:
1 decade ago
Discharge of centrifugal pump is Q = area* velocity of flow.
Q = (pi)(D1)(B1)(VF1) = (PI)(D2)(B2)(VF2).
Where B1 and B2 are width of impeller at inlet and outlet and B1 and B2 are diameter of impeller at inlet and outlet and VF1 and VF2 are velocity of flow at inlet and outlet.
Q = (pi)(D1)(B1)(VF1) = (PI)(D2)(B2)(VF2).
Where B1 and B2 are width of impeller at inlet and outlet and B1 and B2 are diameter of impeller at inlet and outlet and VF1 and VF2 are velocity of flow at inlet and outlet.
Afrasiyab said:
1 decade ago
Directly proportional to square of diameter.
Radhika said:
1 decade ago
Directly proportional to diameter of its impeller. A is the correct answer.
Harry said:
9 years ago
As per Affinity Laws:
Speed is constant,
Q1/Q2 = (D1/D2)^3.
So, the answer is Discharge is inversely proportional to the cube of the diameter.
Speed is constant,
Q1/Q2 = (D1/D2)^3.
So, the answer is Discharge is inversely proportional to the cube of the diameter.
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