Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 40, Problem 11RQ
What is the difference between production quantity and production rate?
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Problem (17): water flowing in an open channel of a rectangular cross-section with width (b) transitions from a
mild slope to a steep slope (i.e., from subcritical to supercritical flow) with normal water depths of (y₁) and
(y2), respectively.
Given the values of y₁ [m], y₂ [m], and b [m], calculate the discharge in the channel (Q) in [Lit/s].
Givens:
y1 = 4.112 m
y2 =
0.387 m
b = 0.942 m
Answers:
( 1 ) 1880.186 lit/s
( 2 ) 4042.945 lit/s
( 3 ) 2553.11 lit/s
( 4 ) 3130.448 lit/s
Problem (14): A pump is being used to lift water from an underground
tank through a pipe of diameter (d) at discharge (Q). The total head
loss until the pump entrance can be calculated as (h₁ = K[V²/2g]), h
where (V) is the flow velocity in the pipe. The elevation difference
between the pump and tank surface is (h).
Given the values of h [cm], d [cm], and K [-], calculate the maximum
discharge Q [Lit/s] beyond which cavitation would take place at the
pump entrance. Assume Turbulent flow conditions.
Givens:
h = 120.31 cm
d = 14.455 cm
K = 8.976
Q
Answers:
(1) 94.917 lit/s
(2) 49.048 lit/s
( 3 ) 80.722 lit/s
68.588 lit/s
4
Problem (13): A pump is being used to lift water from the bottom
tank to the top tank in a galvanized iron pipe at a discharge (Q).
The length and diameter of the pipe section from the bottom tank
to the pump are (L₁) and (d₁), respectively. The length and
diameter of the pipe section from the pump to the top tank are
(L2) and (d2), respectively.
Given the values of Q [L/s], L₁ [m], d₁ [m], L₂ [m], d₂ [m],
calculate total head loss due to friction (i.e., major loss) in the
pipe (hmajor-loss) in [cm].
Givens:
L₁,d₁
Pump
L₂,d2
오
0.533 lit/s
L1 =
6920.729 m
d1 =
1.065 m
L2 =
70.946 m
d2
0.072 m
Answers:
(1)
3.069 cm
(2) 3.914 cm
( 3 ) 2.519 cm
( 4 ) 1.855 cm
TABLE 8.1
Equivalent Roughness for New Pipes
Pipe
Riveted steel
Concrete
Wood stave
Cast iron
Galvanized iron
Equivalent Roughness, &
Feet
Millimeters
0.003-0.03 0.9-9.0
0.001-0.01 0.3-3.0
0.0006-0.003 0.18-0.9
0.00085
0.26
0.0005
0.15
0.045
0.000005
0.0015
0.0 (smooth) 0.0 (smooth)
Commercial steel or wrought iron 0.00015
Drawn…
Chapter 40 Solutions
Manufacturing Engineering & Technology
Ch. 40 - Explain what is meant by manufacturing properties...Ch. 40 - Why is material substitution an important aspect...Ch. 40 - What factors are involved in the selection of...Ch. 40 - How is production quantity significant in...Ch. 40 - List and describe the major costs involved in...Ch. 40 - Why does material selection influence energy...Ch. 40 - Describe life-cycle assessment and life-cycle...Ch. 40 - Define what is meant by economic order quantity.Ch. 40 - Explain the difference between direct-labor cost...Ch. 40 - Describe your understanding of the following...
Ch. 40 - What is the difference between production...Ch. 40 - Is there a significant difference between...Ch. 40 - How would you define value? Explain.Ch. 40 - Define sustainable manufacturing.Ch. 40 - What is the meaning and significance of the term...Ch. 40 - Describe the major considerations involved in...Ch. 40 - What is meant by manufacturing process...Ch. 40 - Prob. 18QLPCh. 40 - Explain why the value of the scrap produced in...Ch. 40 - Prob. 20QLPCh. 40 - Prob. 21QLPCh. 40 - Explain why it takes different amounts of energy...Ch. 40 - Refer to Table 40.2 and explain why it is...Ch. 40 - Explain how the high cost of some of the...Ch. 40 - On the basis of the topics covered in this book,...Ch. 40 - What factors are involved in the shape of the...Ch. 40 - Describe the problems that may have to be faced...Ch. 40 - Prob. 28QLPCh. 40 - Prob. 29QLPCh. 40 - Prob. 30QLPCh. 40 - Prob. 31QLPCh. 40 - Review Table 40.2 and estimate the carbon...Ch. 40 - Explain why the larger the quantity per package...Ch. 40 - Prob. 34QLPCh. 40 - As you can see, Table 40.5 lists only metals and...Ch. 40 - Is it always desirable to purchase stock that is...Ch. 40 - Prob. 37SDPCh. 40 - Prob. 38SDPCh. 40 - Prob. 39SDPCh. 40 - Over the years, numerous consumer products (such...Ch. 40 - List and discuss the different manufacturing...Ch. 40 - Prob. 42SDPCh. 40 - Prob. 43SDPCh. 40 - Select three different products commonly found in...Ch. 40 - Prob. 45SDPCh. 40 - The cross-section of a jet engine is shown in Fig....Ch. 40 - Inspect some products around your home, and...Ch. 40 - Prob. 48SDPCh. 40 - Discuss the trade-offs involved in selecting...Ch. 40 - Discuss the factors that influence the choice...Ch. 40 - Prob. 52SDPCh. 40 - Figure P40.53 shows a sheet-metal part made of...Ch. 40 - The part shown in Fig. P40.54 is a carbon-steel...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The flow rate is 12.275 Liters/s and the diameter is 6.266 cm.arrow_forwardAn experimental setup is being built to study the flow in a large water main (i.e., a large pipe). The water main is expected to convey a discharge (Qp). The experimental tube will be built at a length scale of 1/20 of the actual water main. After building the experimental setup, the pressure drop per unit length in the model tube (APm/Lm) is measured. Problem (20): Given the value of APm/Lm [kPa/m], and assuming pressure coefficient similitude, calculate the drop in the pressure per unit length of the water main (APP/Lp) in [Pa/m]. Givens: AP M/L m = 590.637 kPa/m meen Answers: ( 1 ) 59.369 Pa/m ( 2 ) 73.83 Pa/m (3) 95.443 Pa/m ( 4 ) 44.444 Pa/m *******arrow_forwardFind the reaction force in y if Ain = 0.169 m^2, Aout = 0.143 m^2, p_in = 0.552 atm, Q = 0.367 m^3/s, α = 31.72 degrees. The pipe is flat on the ground so do not factor in weight of the pipe and fluid.arrow_forward
- Find the reaction force in x if Ain = 0.301 m^2, Aout = 0.177 m^2, p_in = 1.338 atm, Q = 0.669 m^3/s, and α = 37.183 degreesarrow_forwardProblem 5: Three-Force Equilibrium A structural connection at point O is in equilibrium under the action of three forces. • • . Member A applies a force of 9 kN vertically upward along the y-axis. Member B applies an unknown force F at the angle shown. Member C applies an unknown force T along its length at an angle shown. Determine the magnitudes of forces F and T required for equilibrium, assuming 0 = 90° y 9 kN Aarrow_forwardProblem 19: Determine the force in members HG, HE, and DE of the truss, and state if the members are in tension or compression. 4 ft K J I H G B C D E F -3 ft -3 ft 3 ft 3 ft 3 ft- 1500 lb 1500 lb 1500 lb 1500 lb 1500 lbarrow_forward
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- An experimental setup is being built to study the flow in a large water main (i.e., a large pipe). The water main is expected to convey a discharge (Qp). The experimental tube will be built at a length scale of 1/20 of the actual water main. After building the experimental setup, the pressure drop per unit length in the model tube (APm/Lm) is measured. Problem (19): Given the value of Qp [m³/s], and assuming Reynolds number similitude between the water main and experimental tube, calculate the flow rate in the model tube (Qm) in [lit/s]. = 30.015 m^3/sarrow_forwardProblem 11: The lamp has a weight of 15 lb and is supported by the six cords connected together as shown. Determine the tension in each cord and the angle 0 for equilibrium. Cord BC is horizontal. E 30° B 60° Aarrow_forwardProblem 10: If the bucket weighs 50 lb, determine the tension developed in each of the wires. B $30° 5 E D 130°arrow_forward
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