
Concept explainers
(a)
The value of the diameter.

Answer to Problem 11.33P
The required value of the diameter is
Explanation of Solution
Given Information:
Formula used:
Calculation:
To solve this problem, we are taking the value of specific weight of the water as
Now we will find the efficiency;
Put the values in the above equation;
Now we will use the scaling laws for BEP flow rate and head;
Solve for D2 and n2 simultaneously:
(b)
The speed that will deliver a BEP water flow rate of

Answer to Problem 11.33P
The required value of the speed is
Explanation of Solution
Given information:
Formula used:
Calculation:
Explained in the above part;
Repeat:
Now we will use the scaling laws for BEP flow rate and head;
Solve for D2 and n2 simultaneously:
(c)
The brake horsepower.

Answer to Problem 11.33P
The required value of the brake horsepower is
Explanation of Solution
Given Information:
Formula used:
Calculation:
We know the formula for the required horse power, i.e.:
Put the values in the above equation
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Chapter 11 Solutions
Fluid Mechanics
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