EBK AUTOMOTIVE TECHNOLOGY
6th Edition
ISBN: 9780135257470
Author: Halderman
Publisher: VST
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Textbook Question
Chapter 21, Problem 1RQ
What is normal operating coolant temperature?
Expert Solution & Answer
To determine
State the normal operating temperature of a coolant.
Explanation of Solution
A thermostat is referred as a temperature-controlled valve located at the engine coolant exit on most engines to control the minimum normal operating temperature. It is used to control the normal operating coolant temperature between high-temperature and low-temperature extremes.
The coolant temperature usually depends on the thermostat rating. The engines equipped with a
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4. An impeller rotating at 1150 rpm has the following data: b, = 1 ¼ in., b2 = ¾ in., d, = 7 in., d2 =
15 in., B1 = 18", B2 = 20°, cross-sectional area A = Db if vane thickness is neglected. Assuming radial inlet flow, determine the theoretical
capacity in gpm
head in ft
horsepower
5. If the impeller in Problem (4) develops an actual head of 82 ft and delivers 850 gpm at the point of maximum efficiency and requires 22 BHP. Determine
overall pump efficiency
virtual velocities V2 and W2
(30 pts) Problem 1
A thin uniform rod of mass m and length 2r rests in a smooth hemispherical bowl of radius r. A
moment M
mgr
4
is applied to the rod. Assume that the bowl is fixed and its rim is in the
horizontal plane.
HINT: It will help you to find the length l of that portion of the rod that remains outside the
bowl.
M
2r
a) How many degrees of freedom does this system have?
b) Write an equation for the virtual work in terms of the angle 0 and the motion of the
center of mass (TF)
c) Derive an equation for the variation in the position of the center of mass (i.e., Sŕƒ)
a. HINT: Use the center of the bowl as the coordinate system origin for the problem.
d) In the case of no applied moment (i.e., M 0), derive an equation that can be used to
solve for the equilibrium angle of the rod. DO NOT solve the equation
e) In the case of an applied moment (i.e., M
=
mgr
= -) derive an equation that can be used to
4
solve for the equilibrium angle of the rod. DO NOT solve the equation.
f) Can…
Please show all work step by step
Chapter 21 Solutions
EBK AUTOMOTIVE TECHNOLOGY
Ch. 21 - What is normal operating coolant temperature?Ch. 21 - Explain the flow of coolant through the engine and...Ch. 21 - Why is a cooling system pressurized?Ch. 21 - Describe how to diagnose a heater problem.Ch. 21 - What are 10 common causes of overheating?Ch. 21 - What diagnostic trouble code (DTC) could be set if...Ch. 21 - Prob. 2CQCh. 21 - What type of pump is a water pump? a. Positive...Ch. 21 - Water pumps __________. a. only work at idle and...Ch. 21 - Which statement is true about thermostats? a. The...
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