Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 35, Problem 12RQ
What is the purpose of a typical inverter?
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Q1. A curved beam of a circular cross section of diameter "d" is fixed at one end and
subjected to a concentrated load P at the free end (Fig. 1). Calculate stresses at points
A and C. Given: P = 800 N, d = 30 mm, a 25 mm, and b = 15 mm.
Fig.1
P
b
B
(10 Marks)
You are working as an engineer in a bearing systems design company. The flow of
lubricant inside a hydrodynamic bearing (p = 0.001 kg m-1 s-1) can be approximated
as a parallel, steady, two-dimensional, incompressible flow between two parallel plates.
The top plate, representing the moving part of the bearing, travels at a constant speed,
U, while the bottom plate remains stationary (Figure Q1). The plates are separated by
a distance of 2h = 1 cm and are W = 20 cm wide. Their length is L = 10 cm. By
applying the above approximations to the Navier-Stokes equations and assuming that
end effects can be neglected, the horizontal velocity profile can be shown to be
y = +h
I
2h = 1 cm
x1
y = -h
u(y)
1 dP
2μ dx
-y² + Ay + B
moving plate
stationary plate
U
2
I2
L = 10 cm
Figure Q1: Flow in a hydrodynamic bearing. The plates extend a width, W = 20 cm,
into the page.
Question 1
You are working as an engineer in a bearing systems design company. The flow of
lubricant inside a hydrodynamic bearing (µ = 0.001 kg m¯¹ s¯¹) can be approximated
as a parallel, steady, two-dimensional, incompressible flow between two parallel plates.
The top plate, representing the moving part of the bearing, travels at a constant speed,
U, while the bottom plate remains stationary (Figure Q1). The plates are separated by
a distance of 2h = 1 cm and are W = 20 cm wide. Their length is L = 10 cm. By
applying the above approximations to the Navier-Stokes equations and assuming that
end effects can be neglected, the horizontal velocity profile can be shown to be
1 dP
u(y)
=
2μ dx
-y² + Ay + B
y= +h
Ꮖ
2h=1 cm
1
x1
y = −h
moving plate
stationary plate
2
X2
L = 10 cm
Figure Q1: Flow in a hydrodynamic bearing. The plates extend a width, W = 20 cm,
into the page.
(a) By considering the appropriate boundary conditions, show that the constants take
the following forms:
U
U
1 dP
A =…
Chapter 35 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 35 - What are the basic components of a belt alternator...Ch. 35 - What are the main reasons that a mild hybrid...Ch. 35 - Which of the following statements about the...Ch. 35 - The Prius PHEV offers many advantages over the...Ch. 35 - In a Toyota Prius, what members of the planetary...Ch. 35 - Prob. 6RQCh. 35 - Prob. 7RQCh. 35 - Prob. 8RQCh. 35 - After isolating the high-voltage system, what is...Ch. 35 - How often must insulated linemans gloves be tested...
Ch. 35 - Nearly all hybrids have less powerful engines than...Ch. 35 - What is the purpose of a typical inverter?Ch. 35 - On hybrids with a separate cooling system for the...Ch. 35 - During diagnostics, the DTC P3009 is displayed,...Ch. 35 - Which of the following is the least likely to...Ch. 35 - Prob. 1ASRQCh. 35 - When working on a high-voltage system, it is best...Ch. 35 - Prob. 3ASRQCh. 35 - Technician A says diesel engines can be used in a...Ch. 35 - While discussing working on hybrid vehicles:...Ch. 35 - Prob. 6ASRQCh. 35 - Prob. 7ASRQCh. 35 - Technician A says PVE refrigerant oil is commonly...Ch. 35 - Prob. 9ASRQCh. 35 - Prob. 10ASRQ
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