Bundle: Electricity For Refrigeration, Heating, And Air Conditioning, 10th + Refrigeration And Air Conditioning Technology, 8th + Mindtap Hvac, 4 ... Whitman/johnson's Refrigeration And Air Condi
8th Edition
ISBN: 9780357261385
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 31, Problem 22RQ
What are dual-in-line-pair (DIP) switches?
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Q3-B (7 Marks): A mass (m) is suspended from a spring of stiffness 4000 N/m and is
subjected to a harmonic force having an amplitude of 100 N and a frequency of 5 Hz. The
amplitude of the forced motion of the mass is observed to be 20 mm. Find the value of mass
(m).
Fig. (2)
Q3-A (8 Marks): An automobile is modeled as a single-degree-of-freedom system vibrating in
the vertical direction. It is driven along a road whose elevation varies sinusoidally. The
distance from peak to trough is 0.2 m and the distance along the road between the peaks is 35
m. If the natural frequency of the automobile is 2 Hz and the damping ratio of the shock
absorbers is 0.15, determine the amplitude of vibration of the automobile at a speed of 60
km/hour
6.18
2.
Q4(15 Marks): The motor-pump system shown in Fig. 4. is modeled as a rigid bar of mass
m=50 kg and mass moment of inertia Jo=100 kg-m. The foundation of the system can be
replaced by two springs of stiffness k=500 N/m and k₂-200 N/m and L=1 m. Determine
the natural frequencies of the system.
Motor,
Fig. (4)
1
6(1)
Pump
C.G.
x(1)
x₁(1)
Base
(a)
Foundation
(b)
C.G. m, Jo
x2(1)
Chapter 31 Solutions
Bundle: Electricity For Refrigeration, Heating, And Air Conditioning, 10th + Refrigeration And Air Conditioning Technology, 8th + Mindtap Hvac, 4 ... Whitman/johnson's Refrigeration And Air Condi
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