Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
7th Edition
ISBN: 9781337794381
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 52, Problem 9SA
Give two main advantages of an on-vehicle lathe versus a bench lathe.
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1. Steam leaves the boiler of a power plant at 5 MPa, 500°C as shown in the following figure. As
the steam passes to the turbine, the temperature drops to 496°C before it enters the turbine due to
a heat loss through the pipe's insulation. The pressure drop in the pipe connecting the boiler to
the turbine is negligible. The steam then passes through an adiabatic turbine and exits at 10 kPa.
The turbine has an isentropic efficiency of 85% and is delivering 1000 MW of power. Determine
the following.
P = 5 MPa
T₁ = 500°C
Boiler
P₁₂ =5 MPa
Τ =496°C
7 = 85%
W = 1,000 MW
P=1 atm
To=25°C
Turbine
3+ P = 10 kPa
a. The heat transfer rate from the pipe connecting the boiler to the turbine (in MW)
b. The change in flow exergy rate as the steam flows through the pipe (MW). This represents
exergy that is lost to the environment and unavailable for power delivery. Comment on the
magnitude of this exergy loss compared to the power delivered by the turbine. What factor(s)
would warrant better…
An aluminum rod of length L
=
1m has mass density p = 2700 kg and
Young's modulus E = 70 GPa. The rod is fixed at both ends. The exact
natural eigenfrequencies of the rod are wexact
E
=
√
ρ
for n=1,2,3,. . . .
1. What is the minimum number of linear elements necessary to
determine the fundamental frequency w₁ of the system? Discretize
the rod in that many elements of equal length, assemble the global
system of equations KU = w² MU, and find the fundamental
frequency w₁. Compute the relative error e₁ = (w1 - wexact) /w exact
Sketch the fundamental mode of vibration.
2. Use COMSOL to solve the same problem. Show the steps necessary
to find the fundamental frequency and mode of the rod. What is the
relative error using linear elements and a normal mesh?
A ball with a mass of 5.0 kg is hanging from a string and is initially at rest.
A bullet with a mass of 10.0 g and a velocity of 200.0 m/s is fired at the ball.
The bullet embeds itself inside the ball.
How high (h) do the ball and the bullet rise?
Gravitational acceleration: g=9.81g = 9.81g=9.81 m/s².
Chapter 52 Solutions
Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
Ch. 52 - Name the three major assemblies that make up a...Ch. 52 - Name the three types of calipers used on disc...Ch. 52 - Describe the differences between floating and...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 - What type of brake uses the inside of each rear...Ch. 52 - True or False? Disc brakes are not as likely to...Ch. 52 - True or False? All calipers have at least one...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 - When reassembling an overhauled brake caliper:...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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