Bundle: Automotive Technology: A Systems Approach, 6th + MindTap Auto Trades, 4 terms (24 months) Printed Access Card
6th Edition
ISBN: 9781305361454
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 52, Problem 7RQ
What is the difference between floating and sliding calipers?
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OBJECTIVE TYPE QUESTIONS
1.
The velocity ratio of two pulleys connected by an open belt or crossed belt is
2.
(a) directly proportional to their diameters
(b) inversely proportional to their diameters
(c) directly proportional to the square of their diameters
(d) inversely proportional to the square of their diameters
Two pulleys of diameters d, and d, and at distance x apart are connected by means of an open belt
drive. The length of the belt is
(a)(d+d₁)+2x+
(d₁+d₂)²
4x
(b)(d₁-d₂)+2x+
(d₁-d₂)²
4x
(c)(d₁+d₂)+ +2x+
(d₁-d₂)²
4x
(d)(d-d₂)+2x+
(d₁ +d₂)²
4x
3.
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
(a) open belt drive is recommended
(b) cross belt drive is recommended
(c) both open belt drive and cross belt drive are recommended
(d) the drive is recommended depending upon the torque transmitted
Due to slip of the belt, the velocity ratio of the belt drive
4.
(a) decreases
5.
(b) increases
(c) does not change
When two pulleys…
Q3:
(10 MARKS)
A piston with a weight of 29.4 N is supported by a spring
and dashpot. A dashpot of damping coefficient c = 275
N.s/m acts in parallel with the spring of stiffness k = 2400
N/m. A fluctuating pressure p = 960 sin 30t N/m² acts on
the piston, whose top surface area is 0.05 m². Determine
the steady-state displacement as a function of time and the
maximum force transmitted to the base.
P=Po sin cot
W
9. Design a spur gear drive required to transmit 45 kW at a pinion speed of 800 r.p.m. The velocity ratio
is 3.5 : 1. The teeth are 20° full-depth involute with 18 teeth on the pinion. Both the pinion and gear
are made of steel with a maximum safe static stress of 180 MPa. Assume a safe stress of 40 MPa for
the material of the shaft and key.
10. Design a pair of spur gears with stub teeth to transmit 55 kW from a 175 mm pinion running at 2500
r.p.m. to a gear running at 1500 r.p.m. Both the gears are made of steel having B.H.N. 260. Approximate
the pitch by means of Lewis equation and then adjust the dimensions to keep within the limits set by
the dynamic load and wear equation.
Chapter 52 Solutions
Bundle: Automotive Technology: A Systems Approach, 6th + MindTap Auto Trades, 4 terms (24 months) Printed Access Card
Ch. 52 - Name the three major assemblies that make up a...Ch. 52 - Name the three types of calipers used on disc...Ch. 52 - What type of brake uses the inside of each rear...Ch. 52 - True or False? Disc brakes are not as likely to...Ch. 52 - What are the two basic types of brake rotors used...Ch. 52 - True or False? All calipers have at least one...Ch. 52 - What is the difference between floating and...Ch. 52 - What is rotor parallelism and how is it checked?Ch. 52 - Why is brake fluid removed from the master...Ch. 52 - Describe the procedure for using compressed air to...
Ch. 52 - List three conditions that dictate that a rotor...Ch. 52 - Give two main advantages of an on-vehicle lathe...Ch. 52 - What should be done to remove rust, corrosion, pit...Ch. 52 - Which term refers to variations in thickness of...Ch. 52 - Which of the following is not likely to cause a...Ch. 52 - Technician A says that a hard brake pedal on a...Ch. 52 - When replacing brake pads on a vehicle: Technician...Ch. 52 - When examining disc brakes: Technician A visually...Ch. 52 - Technician A cleans brake components in denatured...Ch. 52 - While discussing how to remove the piston from a...Ch. 52 - The functions of a splash shield are being...Ch. 52 - Technician A says that the piston seal retracts...Ch. 52 - Technician A says that fixed calipers use a piston...Ch. 52 - While installing new brake pads: Technician A...Ch. 52 - Loaded calipers are being discussed: Technician A...
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