Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 19, Problem 12ICA
Assume that a simple menu has been created by the following line of code:
Write a short section of code that will handle the situation if the user closes the menu instead of making a selection. If the menu is closed without a proper selection, the user should be told to try again, then the menu should be redisplayed. This should continue until the user makes a proper selection.
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Q.5: (10 Marks) Select the correct answer (choose 10 only)
1. The forward whirling speed is ......... the static structure tilting speed.
(a) Less than
(b) Higher than
(c) equal to
2. The divergence between the forward and backward whirling speeds increases as:
(a) The rotating speed increase (b) the polar moment of inertia increases
(c) Both (a) and (b)
(d) do not change
3. Increasing the system natural frequency can be done by:
(a) add masses (b) adding braces and supports (c) increase damping
4. The amplitude of vibration due to external force can be reduced by:
(a) Increasing damping (b) Decreasing damping (c) Increasing mass
5. Tuned absorbers are used to:
(a) Shift the natural frequency (b) increase damping (c) Increase stiffness
6. Accelerometers sensors contains:
г
(a) Piezoelectric materials (b) Magnet and coil (c) coil only
7. Increasing the stiffness of the system causes:
(a) Less transmitted force (b) more transmitted force (c) Transmitted force does not
change
8. The…
Q.1: (15 Marks)
Find the first three natural frequencies and mode shapes of the axial and torsional
vibration for a steel shaft free at both ends, having a length of 3 m. Find the subsequent
axil motion if the shaft is subjected to the following initial conditions, given that E = 210
GPa, G=80 GPa, p = 7800 kg/m³:
f(x)=0
v(x) = {1
2.8
Q.4: (15 Marks)
A uniform rotor of mass 500 kg and diametral moment of inertia of 20 kg.m², is supported
by identical short bearings of stiffness 1 MN/m in the horizontal and vertical directions. If
the distance between the bearings is 0.6 m:
(a) What is the corresponding polar moment of inertia if the backward whirling speed is
80% of the static structure tilting natural frequency?
(b) Determine the forward whirling speed.
45.27
Chapter 19 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Ch. 19.1 - Create a written algorithm to multiply all integer...Ch. 19.1 - Create a graphical algorithm to multiply all...Ch. 19.1 - Prob. 3CCCh. 19.2 - Assume a vector v2 has already been defined and...Ch. 19.2 - Prob. 5CCCh. 19.2 - Write a while loop that requires the user to input...Ch. 19.2 - Write a program that asks the user to enter a...Ch. 19.2 - Prob. 8CCCh. 19.2 - Prob. 9CCCh. 19.2 - Write a section of code that will ask the user to...
Ch. 19.3 - Write a for loop to display every even number from...Ch. 19.3 - Write a for loop to display every multiple of 5...Ch. 19.3 - Write a for loop to display every odd number from...Ch. 19.3 - Assume a vector Vals has already been defined....Ch. 19.3 - Consider the following table of values. Determine...Ch. 19.3 - Write two nested for loops to determine how many...Ch. 19.3 - Assume a matrix MZ has already been defined. Write...Ch. 19.3 - Prob. 18CCCh. 19.3 - Determine the output of the following code:Ch. 19 - Prob. 1ICACh. 19 - Create a written algorithm or flowchart as...Ch. 19 - Create a written algorithm or flowchart as...Ch. 19 - Create a written algorithm or flowchart as...Ch. 19 - Create a written algorithm or flowchart as...Ch. 19 - Create a written algorithm or flowchart as...Ch. 19 - Create a written algorithm or flowchart as...Ch. 19 - For each of the following code segments, determine...Ch. 19 - a. Assume CA1 and CA2 are cell arrays that both...Ch. 19 - Fill in the table with the values of k, b, x, and...Ch. 19 - Assume that a simple menu has been created by the...Ch. 19 - Write a MATLAB program to implement the algorithm...Ch. 19 - Write a program that will ask the user to input a...Ch. 19 - Write a MATLAB program to implement the algorithm...Ch. 19 - Write a function named CountDown that accepts a...Ch. 19 - While experimenting with coding sequences, you...Ch. 19 - Answer the question with each of the following...Ch. 19 - For each of the following code segments, determine...Ch. 19 - a.Explain what the following function does,...Ch. 19 - For each of the following code segments, determine...Ch. 19 - Prob. 23ICACh. 19 - Prob. 24ICACh. 19 - Write a MATLAB program to implement the algorithm...Ch. 19 - Prob. 26ICACh. 19 - Write a function named GetArray that will accept...Ch. 19 - Assume the vector AM contains an even number of...Ch. 19 - Write a function named EvenSum that will accept a...Ch. 19 - Prob. 30ICACh. 19 - Write a function named CLASS that will accept a...Ch. 19 - You are assessing the price of various components...Ch. 19 - You are studying the number of defective parts...Ch. 19 - The pascal triangle an amazing number of uses,...Ch. 19 - Write a function named Prodstate that will accept...Ch. 19 - Design a flowchart for a program to help students...Ch. 19 - Create an algorithm to allow the user to enter a...Ch. 19 - Write a program to implement the algorithm...Ch. 19 - A zombie picks up a calculator and starts adding...Ch. 19 - Write a function called Balloon that will accept a...Ch. 19 - Prob. 7RQCh. 19 - Prob. 8RQCh. 19 - You are to program part of the interface for a...Ch. 19 - Prob. 13RQCh. 19 - A matrix names mach contains three columns of data...Ch. 19 - Prob. 15RQCh. 19 - You are programming the control system for a robot...Ch. 19 - Write a program to implement the GPA calculator...Ch. 19 - The Fibonacci sequence is an integer sequence...Ch. 19 - As early as 650 BC, mathematicians have been...Ch. 19 - Write a program to analyze the cooling of a cup of...Ch. 19 - After numerous experiments with a circuit...
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- University of Babylon Collage of Engineering/ Al-Musayab Department of Automobiles Mid Examination/ Stage: 3rd Subject: Theory of Vehicles Date: 14 \ 4 \2025 Time: 1.5 Hours 2025-2024 Q1: The arms of a Porter governor are 250 mm long. The upper arms are pivoted on the axis of revolution, but the lower arms are attached to a sleeve at a distance of 50 mm from the axis of rotation. The weight on the sleeve is 600 N and the weight of each ball is 80 N. Determine the equilibrium speed when the radius of rotation of the balls is 150 mm. If the friction is equivalent to a load of 25 N at the sleeve, determine the range of speed for this position. Q2: In a loaded Proell governor shown in Figure below each ball weighs 3 kg and the central sleeve weighs 25 kg. The arms are of 200 mm length and pivoted about axis displaced from the central axis of rotation by 38.5 mm, y=238 mm, x=303.5 mm, CE 85 mm, MD 142.5 mm. Determine the equilibrium speed. Fe mg E M 2 Q3: In a spring loaded Hartnell type…arrow_forwardQ.2: (15 Marks) = 1400 For the following system, determine the first natural frequency using Dunkerley's equation, Given that the disk has moment of inertia J = 2 kg.m², the shaft has G = 20 GPa, p kg/m³, polar moment of cross-sectional area of the shaft Ip = 8×108 m². 500 mm 220 mm k=200 N/m FOF m=1 kg 14.14 56.56. W слarrow_forwardQ.2: (15 Marks) = 1400 For the following system, determine the first natural frequency using Dunkerley's equation, Given that the disk has moment of inertia J = 2 kg.m², the shaft has G = 20 GPa, p kg/m³, polar moment of cross-sectional area of the shaft Ip = 8×108 m². 500 mm 220 mm k=200 N/m FOF m=1 kg 14.14 56.56. W слarrow_forward
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