Applied Fluid Mechanics
7th Edition
ISBN: 9780133414622
Author: UNTENER
Publisher: YUZU
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Textbook Question
Chapter 13, Problem 13.46PP
Describe why it is important to consider NPSH when designing and operating a pumping system.
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Students have asked these similar questions
The beam is supported by a pin at B and a roller at C and is
subjected to the loading shown with w =110 lb/ft, and F
205 lb.
a.) If M
=
2,590 ft-lb, determine the support reactions at B
and C. Report your answers in both Cartesian components.
b.) Determine the largest magnitude of the applied couple M
for which the beam is still properly supported in equilibrium
with the pin and roller as shown.
2013 Michael Swanbom
CC
BY NC SA
M
ру
W
B⚫
C
F
ka
b
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
3.2 ft
b
6.4 ft
C
3 ft
a.) The reaction at B is B =
The reaction at C is C =
ĵ lb.
i+
Ĵ lb.
b.) The largest couple that can be applied is M
ft-lb.
==
i+
The beam ABC has a mass of 79.0 kg and is supported by
the rope BDC that runs through the frictionless pulley at D
. The winch at C has a mass of 36.5 kg. The tension in the
rope acts on the beam at points B and C and counteracts
the moments due to the beam's weight (acting vertically at
the midpoint of its length) and the weight of the winch
(acting vertically at point C) such that the resultant moment
about point A is equal to zero. Assume that rope segment
CD is vertical and note that rope segment BD is NOT
necessarily perpendicular to the beam.
a.) Compute the tension in the rope.
b.) Model the two forces the rope exerts on the beam as a
single equivalent force and couple moment acting at point B.
Enter your answer in Cartesian components.
c.) Model the two forces the rope exerts on the beam as a
single equivalent force (no couple) and determine the
distance from A to the point along the beam where the
equivalent force acts (measured parallel to the beam from A
). Enter your answer…
w1
Three distributed loads act on a beam as shown. The load
between A and B increases linearly from 0 to a maximum
intensity of w₁ = 12.8 lb/ft at point B. The load then varies
linearly with a different slope to an intensity of w₂ = 17.1
lb/ft at C. The load intensity in section CD of the beam is
constant at w3 10.2 lb/ft. For each load region, determine
the resultant force and the location of its line of action
(distance to the right of A for all cases).
cc 10
BY NC SA
2016 Eric Davishahl
=
WI
W2
W3
-b-
C
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
4.50 ft
b
5.85 ft
с
4.28 ft
The resultant load in region AB is FR₁ =
lb and acts
ft to the right of A.
The resultant load in region BC is FR2
lb and acts
=
ft to the right of A.
The resultant load in region CD is FR3 =
lb and acts
ft to the right of A.
Chapter 13 Solutions
Applied Fluid Mechanics
Ch. 13 - List 12 Factors that should be considered when...Ch. 13 - List items that must be specified for pumpsCh. 13 - Describe a positive-displacement pump.Ch. 13 - Name four examples of rotary positive-displacement...Ch. 13 - Name three types of reciprocating...Ch. 13 - Describe a kinetic pumpCh. 13 - Name three classifications of kinetic pumps.Ch. 13 - Describe the action of the impellers and the...Ch. 13 - Describe a jet pumpCh. 13 - Distinguish between a shallow-well jet pump and a...
Ch. 13 - Describe the difference between a simplex...Ch. 13 - Describe the general shape of the plot of pump...Ch. 13 - Describe the general shape of the plot of total...Ch. 13 - To the head-versus-capacity plot of Problem 13.13...Ch. 13 - To what do the affinity laws refer in regard to...Ch. 13 - Fora given centrifugal pump, if the speed of...Ch. 13 - For a given centrifugal pump, if the speed of...Ch. 13 - For a given centrifugal pump, if the speed of...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - Describe each part of this centrifugal pump...Ch. 13 - For the line of pumps shown in Fig.13.22 specify a...Ch. 13 - For the line of pumps shown in Fig. 13.22 ,...Ch. 13 - For the 2x310 centrifugal pump performance curve...Ch. 13 - For the 2310 centrifugal pump performance curve...Ch. 13 - Using the result from Problem 13.26 describe how...Ch. 13 - For the centrifugal pump performance curve shown...Ch. 13 - Prob. 13.29PPCh. 13 - State some advantages of using a variable-speed...Ch. 13 - Describe how the capacity, efficiency, and power...Ch. 13 - If two identical centrifugal pumps are connected...Ch. 13 - Describe the effect of operating two pumps in...Ch. 13 - For each of the following sets of operating...Ch. 13 - For the 112313 centrifugal pump performance curve...Ch. 13 - For the 6817 centrifugal pump performance curve...Ch. 13 - Figure 13.52 shows that a mixed-flow pump is...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - It is desired to operate a pump at 1750 rpm by...Ch. 13 - Define net positive suction head (NPSH).Ch. 13 - Distinguish between NPSH available and NPSH...Ch. 13 - Describe what happens to the vapor pressure of...Ch. 13 - Describe why it is important to consider NPSH when...Ch. 13 - For what point in a pumping system is the NPSH...Ch. 13 - Discuss why it is desirable to elevate the...Ch. 13 - Discuss why it is desirable to use relatively...Ch. 13 - Prob. 13.50PPCh. 13 - If we assume that a given pump requires 7.50 ft of...Ch. 13 - Determine the available NPSH for the pump in...Ch. 13 - Find the available NPSH when a pump draws water at...Ch. 13 - A pump draws benzene at 25 C from a tank whose...Ch. 13 - Determine the available NPSH for the system shown...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Repeat Problem 13.56 if the pump is 44 in below...Ch. 13 - Repeat Problem 13.59 if the pump is 27 in above...Ch. 13 - Repeat Problem 13.57 if the pump is 1.2 m below...Ch. 13 - Repeat Problem 13.58 if the pump is installed...Ch. 13 - A pump draws propane at F (sgfrom a tank whose...Ch. 13 - A pump draws propane at 45 C (sg =0.48 ) from a...
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