Civil Engineering - Hydraulics - Discussion

Discussion Forum : Hydraulics - Section 4 (Q.No. 28)
28.
If the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over the pipe line is 10 kg/cm2, the efficiency of transmission, is
66.6%
77.7%
55.5%
88.8%.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
9 comments Page 1 of 1.

Jagadeesh said:   3 years ago
In this question, max power transmission is not mentioned they ask efficiency of transmission.

(Output/input) *100 = 88.8%.
(2)

Debabrata Naik said:   3 years ago
Input 90kg/cm2.
Drop-in pressure 10kg/cm3.
Output 90-10 = 80 kg/cm2.

Efficiency= (output/input)*100=88.88%.
But Max efficiency of transmission is 66.66%.
So the answer is 66.66%.
(2)

Vivek said:   4 years ago
Yes, right @Pavi.

Karpi basar said:   6 years ago
90-10/90 = 0.8888.
0.8888*100 = 88.8%.
(2)

Pavi said:   6 years ago
@Navneet.

H-hf/H * 100.
(1)

Kshv said:   7 years ago
But how is it possible because maximum power transmission is limited to 66.67%.

Fikie said:   8 years ago
Efficiency = (Net pressure / initial pressure )*100%.

Navneet said:   8 years ago
What's the formula?

Anand singh said:   1 decade ago
P1 = 90 kg/cm2.
P2 = 10 kg/cm2.

Efficiency = 90-10/90*100 = 88.8.

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