EBK AUTOMOTIVE TECHNOLOGY: A SYSTEMS AP
6th Edition
ISBN: 8220100474392
Author: ERJAVEC
Publisher: Cengage Learning US
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Textbook Question
Chapter 9, Problem 7ASRQ
While conducting an engine vacuum test; Technician A says that a steady low vacuum reading can be caused by a burned intake valve. Technician B says that an overall low vacuum reading is caused by something that affects all of the engines cylinders. Who is correct?
- Technician A
- Technician B
- Both A and B
- Neither A nor B
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Ex. HW. A vertical glass tube, 2cm ID & 5m long in heated
uniformly over its length. The water enter at (200-204 C) &
68.9 bar calculated the pressure drop if the flowrate 0.15
Kg/s & the power applied as a heat to the fluid is 100KW
using the homogeneous model. Given that enthalpy at inlet
temp.=0.87MJ/Kg, enthalpy saturation temp (285C)=1.26
MJ/Kg and μl=0.972*10-4 Ns/m2, μG=2.89*10-5 Ns/m2,
UG=2.515*10-2m3/Kg and the change in UG over range of
pressure=-4.45*10-4m3/Kg/bar.
4. An experimental test rig is used to examine two-phase flow regimes
in horizontal pipelines. A particular experiment involved uses air
and water at a temperature of 25°C, which flow through a horizontal
glass tube with an internal diameter of 25.4 mm and a length of 40 m.
Water is admitted at a controlled rate of 0.026 kgs at one end and air
at a rate of 5 x 104 kgs in the same direction. The density of water
is 1000 kgm³, and the density of air is 1.2 kgm. Determine the mass
flow rate, the mean density, gas void fraction, and the superficial
velocities of the air and water. Answer: 0.02605 kgs 1, 61.1 kgm³, 0.94,
0.822 ms-1, 0.051 ms-1
Chapter 9 Solutions
EBK AUTOMOTIVE TECHNOLOGY: A SYSTEMS AP
Ch. 9 - Prob. 1RQCh. 9 - Describe what takes place during the four strokes...Ch. 9 - As an engines compression ratio increases, what...Ch. 9 - What test can be performed to check the efficiency...Ch. 9 - Describe tappet noise.Ch. 9 - Which of the following statements about engines is...Ch. 9 - Which stroke in the four-stroke cycle begins as...Ch. 9 - True or False? In an HCCI engine, combustion...Ch. 9 - Which of the following is not a true statement...Ch. 9 - True or False? SAE mandates that engine, when...
Ch. 9 - Technician A says head gasket thickness has an...Ch. 9 - Prob. 12RQCh. 9 - The stroke of an engine is the crank throw half...Ch. 9 - True or False? The camshaft is always located in...Ch. 9 - Which of the following is an expression of how...Ch. 9 - While diagnosing the cause for blue smoke from the...Ch. 9 - Prob. 2ASRQCh. 9 - While determining the cause for air leaking out of...Ch. 9 - While diagnosing the cause for an engine having...Ch. 9 - While looking at the results of an oil pressure...Ch. 9 - A vehicle is producing a sharp, metallic rapping...Ch. 9 - While conducting an engine vacuum test; Technician...Ch. 9 - While determining the most likely problem of an...Ch. 9 - When a customer states that black exhaust smoke is...Ch. 9 - Technician A says that if an engine had good...
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