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Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion

Discussion Forum : Hydraulics and Fluid Mechanics - Section 5 (Q.No. 2)
Hydraulics and Fluid Mechanics
2.
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
less than twice
more than twice
less than three times
more than three times
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.
Sai rock said:   3 years ago
I agree with you @Rajkotha.
Rajkotha said:   4 years ago
Free = equal to the diameter or less than three times.

Full = equal to three times or more than three times.

(RS Khurmi).
(1)
Sourav said:   5 years ago
It should be equal to.
Abhishek said:   5 years ago
Please explain this.
Abhishek Verma said:   5 years ago
If the length of the mouthpiece extending into the fluid is less than 3 times the diameter of the orifice, it will run free.
Pallab dey said:   5 years ago
The length of the mouthpiece is equal to the diameter, if it is running free.
Deepak Rathva said:   7 years ago
Answer should be equal to Option A is the nearest to Diameter D.

So, I prefer A.
Muhammad Waqas said:   9 years ago
If the jet, after contraction, does not touch the sides of the mouthpiece, it is said to be running free. It has been experimentally found that if the length of the mouthpiece extending into the fluid is less than 3 times the diameter of the orifice, it will run free.

If the jet, after contraction, expands and fills up the whole mouthpiece, it is said to be running full. If the length of the mouthpiece is more than 3 times the diameter of the orifice, it will run full.
Ajay gupta said:   9 years ago
Yes, you are right @Vasukeee.
Vasukeee said:   9 years ago
I think the answer is equal diameter of the orifice. Am I right?
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