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 4 of 5.
Anurag Adhikary said:
9 years ago
Correct the answers, it should be option A.
Kartheek said:
9 years ago
Discharge in centrifugal pump (Q) = pi * D * b * v.
where D = dia of the impeller at the inlet,
b = width of the impeller at the inlet
v = velocity of flow at the inlet.
So, according to the formula, discharge is directly proportional to Diameter of the impeller.
where D = dia of the impeller at the inlet,
b = width of the impeller at the inlet
v = velocity of flow at the inlet.
So, according to the formula, discharge is directly proportional to Diameter of the impeller.
Faisal mumtaz said:
9 years ago
Directly proportional to diameter so, option A is correct.
Honey said:
9 years ago
I think, All the options are not satisfied. The correct answer will be directly proportional to the cube of the diameter of vanes.
Smith said:
9 years ago
The discharge flow rate of a centrifugal pump is directly proportional to diameter. Discharge head is directly proportional to the square of the diameter. And power is directly proportional to the cube of the diameter. You can understand all this with the help of affinity laws.
Jwala said:
9 years ago
The correct answer should be A.
HEMANT said:
9 years ago
We know that Q = pi * d * b * vf.
So that is directly proportional to d.
So that is directly proportional to d.
Sarat said:
9 years ago
Option A is the correct answer.
Sushil said:
1 decade ago
Discharge of centrifugal pump is given by Q = (pi)(D2)(B2)(Vf2).
As per above equation option (A) is correct.
As per above equation option (A) is correct.
Ashutosh said:
8 years ago
According to affinity law.
Flow or discharge is directly proportional to impeller diameter if the speed of the shaft is constant.
Flow or discharge is directly proportional to impeller diameter if the speed of the shaft is constant.
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