Class notes
7_Hydraulics Practice Quiz with Answer and Solution
- Course
- Institution
This note contains practice quizzes for civil engineering hydraulics. It includes practice problems with answers and solutions for the study guide.
[Show more]
Seller
Follow
DocuPlex
Content preview
Refresher - HYDRAULICS Quiz 7PROBLEM 1:
A rectangular plate is vertically submerged half in oil having a specific gravity of
0.64 and half in water such that its top edge is flushed with the top surface of the
upper liquid and parallel to it. Obtain the ratio of the force exerted to the plate by
the water to that by the oil.
D
Solution:
h/2 0.84
P=γ hA
⎛ h⎞ ⎛ h⎞ h/2 1.0
Poil = 9.81(0.64) ⎜ ⎟ ⎜ ⎟ D
⎝ 4⎠ ⎝ 2⎠
Poil = 0.7848
⎛ h h⎞ ⎛ h⎞
Pwater = 9.81(1.0) ⎜ 0.64 • + ⎟ ⎜ ⎟ (D)
⎝ 2 4⎠ ⎝ 2⎠
Pwater = 2.7959
Pwater 2.7959 h2 D
=
Poil 0.7848 h2 D
Pwater
= 3.56
Poil
, Refresher - HYDRAULICS Quiz 7
PROBLEM 2-4:
Three pipes A, B and C are connected in parallel. If the combined discharged of the 3 pipes
is equal to 0.61 m3/s, and assuming they have equal values of friction factor "f", compute the
following using the tabulated data shown:
A
PIPELINE LENGTH DIAM.
A 600 m. 150 m.
B 480 m. 200 m. Q=0.61 B Q=0.61
C 750 m. 100 m.
➀ Compute the rate of flow of pipeline A in li/sec. C
➁ Compute the rate of flow of pipeline B in li/sec.
➂ Compute the rate of flow of pipeline C in li/sec.
Solution:
➀ Rate of flow of pipeline A:
hfA = hfB = hfC
0.0826 f LA QA2 0.0826 f LB QB2
(DA)5 = (DB)5
600 QA2 480 QB2
(0.15)5 = (0.2)5
QA = 0.436 QB ➁ Rate of flow of pipeline B:
QB = 2.295 QA QB = 2.295 QA
QB = 2.295(0.17)
600 QA2 750 QC2 QB = 0.39 m3/s
(0.15)5 = (0.10)5
QB = 390 liters/sec.
QA = 3.08 QC
QC = 0.325 QA ➂ Rate of flow of pipeline C:
QA + QB + QC = 0.61 QC = 0.325 QA
QA + 2.295 QA + 0.325 QA = 0.61 QC = 0.325 (0.17)
QA = 0.17 m3/s = 170 liters/sec. QC = 0.05 m3/s = 50 liters/sec.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller DocuPlex. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now