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 51, Problem 2RQ
Explain how drum brakes create a self-multiplying brake force.
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1.11 (a) A test piece is cut from a brass
bar and subjected to a tensile test.
With a load of 6.4 kN the test piece, of
diameter 11.28 mm, extends by 0.04
mm over a gauge length of 50 mm.
Determine:
(i) the stress, (ii) the strain, (hi) the
modulus of elasticity.
(b) A spacer is turned from the same
bar. The spacer has a diameter of 28
mm and a length of 250mm. both
measurements being made at 20°C.
The temperature of the spacer is
then increased to 100°C, the natural
expansion
being entirely prevented. Taking the
coefficient of linear expansion to be 18
x 10-6/"C determine:
(i) the stress in the spacer, (ii) the
compressive load on the spacer.
[C.G.] [64MN/m2, 0.0008, 80GN/m2,
115.2 MN/m2, 71 KN.]
10:41
I have attached an image, In that they have mentioned the tolerance of 0.4 for all surfaces. I need to know what's the exact tolerance.
Solve this problem and show all of the work
Chapter 51 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 51 - Name the two methods of attaching brake lining...Ch. 51 - Explain how drum brakes create a self-multiplying...Ch. 51 - List at least five separate types of wear and...Ch. 51 - What is the job of wheel cylinder stops?Ch. 51 - Explain the operation of an integral drum brake...Ch. 51 - In a typical drum brake, which component provides...Ch. 51 - True or False? The name duo-servo drum brake is...Ch. 51 - Prob. 8RQCh. 51 - Which of the following statements about drum brake...Ch. 51 - Brake linings should be replaced when. linings are...
Ch. 51 - In the unapplied position, drum brake shoes arc...Ch. 51 - Duo-servo drum brakes are also known as what type...Ch. 51 - On most vehicles, the automatic adjuster cables or...Ch. 51 - Backing plates, struts, levers, and other metal...Ch. 51 - A buildup of brake dust and dirt between the...Ch. 51 - Technician A says that an out-of-round drum can...Ch. 51 - Technician A says that a grinding noise from a...Ch. 51 - It has been determined that chatter and brake pull...Ch. 51 - Technician A says that the discard dimension of a...Ch. 51 - After resurfacing a brake drum: Technician A...Ch. 51 - Drum linings are badly worn at their heel and toe:...Ch. 51 - When machining brake drums: Technician A tries to...Ch. 51 - While discussing what would happen if too much...Ch. 51 - Technician A checks the surface of the drum for...Ch. 51 - While discussing pull during braking: Technician A...
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