AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
7th Edition
ISBN: 9781337792158
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 53, Problem 5ASRQ
Technician A says that some antilock brake systems use a lateral acceleration sensor in addition to the wheel-speed sensors. Technician B says that traction control systems apply one wheel brake to get the vehicle going in the direction in which it is being steered. Who is correct?
- Technician A only
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Task 1:
Graphical Diagrams for Minimum Energy Consumption
Table 1 provides a list of process streams that should be heat integrated. The utility system
is represented by steam (ST) and cooling water (CW) that are available in sufficient amounts
on the production site ("var" is short for variable, which means that the amounts of utilities
required are unknown and should be determined). It is assumed that ATmin -10°C gives a
reasonable economic trade-off between operating cost (energy) and investment cost (heat
exchangers).
Table 1:
Data for Streams and Utilities
Stream
T₂(°C)
T, (°C)
mCp (kW/°C)
HI
200
70
50
H2
300
60
10
C1
90
180
40
40
240
30
ST
250
250
(var)
CW
10
20
(var)
a) Sketch the overall heating and cooling curves (the Composite Curves) for this heat
integration problem that consists of four process streams. Notice that for this sub-
task (a) it is not required to satisfy ATmin -10°C.
b) Try to shift in a parallel manner the overall heating curve until it lies completely…
Fungal cells are cultured in a bioreactor using glucose (C6H12O6) as the carbon source andnitrate (NO3⁻) as the nitrogen source. The vessel is sparged with air. Biomass is the majorproduct formed; however, because the cells are subject to autolysis, significant levels of excretedby-products with the same molecular composition as the biomass are also produced.Elemental analysis of the fungal biomass gives a molecular formula of CH1.75O0.85N0.20, withnegligible ash. Yield measurements show that 0.28 g of intact fungal cells is produced per gramof glucose consumed, while 0.25 g of by-product is formed per gram of intact biomass.(a) If 8 kg of glucose is consumed per hour, at what rate must oxygen be provided to thereactor in units of mol min⁻¹?
Ginseng roots can be used to produce valuable secondary metabolites, particularlyginsenosides, in vitro. A batch culture of Panax ginseng roots is established in an air-drivenbioreactor to enhance ginsenoside production. The culture is maintained at 25°C with acontrolled nutrient supply. A nutrient medium containing 5% glucose and 2% NH₃ is preparedfor the culture, with the remainder of the medium considered water. Air at 25°C and 1 atmpressure is sparged into the reactor at a rate of 400 cm³ min⁻¹. Over a 30-day culture period,30,000 g of nutrient medium and 1000 liters of O₂ are supplied, while 300 liters of CO₂ arecollected in the off-gas. At the end of 30 days, 20,000 g of liquid medium remains, containing0.085% residual glucose and 1.6% dissolved NH₃. The ratio of fresh root weight to dry weight is10:1.(a) What dry mass of ginseng roots is produced in 30 days?(b) Write the reaction equation for ginseng root growth, indicating the approximatechemical formula for the roots,…
Chapter 53 Solutions
AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
Ch. 53 - What is the primary difference between an...Ch. 53 - Briefly describe the proper steps and testing...Ch. 53 - An ABS modulates brake pressure. What does this...Ch. 53 - Explain the difference between over steer and...Ch. 53 - List the various methods used by traction control...Ch. 53 - Besides indicating ABS faults for some systems,...Ch. 53 - What are the functions of an isolation/dump valve?Ch. 53 - Describe the normal pedal feel when the ABS is...Ch. 53 - Define the difference between an integrated and a...Ch. 53 - Why are the wires leading to some wheel-speed sen...
Ch. 53 - Describe the differences between passive and...Ch. 53 - Which of the following is a true statement? In...Ch. 53 - What is the name for the gas-filled pressure...Ch. 53 - When inspecting wheel-speed sensors, check for all...Ch. 53 - Prob. 4MCCh. 53 - Technician A says that a malfunction of the ABS...Ch. 53 - While road testing a car equipped with an ABS:...Ch. 53 - Technician A says that the accumulator in an ABS...Ch. 53 - Technician A says that it is normal for the amber...Ch. 53 - Technician A says that some antilock brake systems...Ch. 53 - Technician A says that wheel-speed sensors send an...Ch. 53 - Technician A says that an ABS problem can cause...Ch. 53 - Technician A says that each ABS has its own...Ch. 53 - Technician A says engine power may be reduced if...Ch. 53 - Technician A says that some traction control...
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- 2) Ammonia (NH3) is an important base, particularly in wastewaters. Consider a solution that contains a total of 10-3 M of ammonia in water. NH4+ = NH3 + H+ KA=10-9.3 a) Use the equilibrium expression and concept of mass balance to write an expression for each of the following species: log [NH4*] and log [NH3]. b) Prepare a log C-pH diagram for the solution described above. Label each line on your graph with the name of the chemical species it represents. [Notes: Your diagram should contain 4 lines, one for each of the four species in the system. You may draw your diagram by hand or using Excel or other software.] c) Use your diagram to find the equilibrium pH of the solution. Use a circle or “X” to mark your answer point on the diagram. d) Now consider a new solution made by adding 10-3 M of NH4Cl to water. Write the charge balance or proton condition for this solution. Use your diagram to determine the equilibrium pH of this solution. e) Suppose it is winter and your water…arrow_forwardMethylamine is used in the manufacturing of several various pharmaceutical products. Atone facility, there is a 2000 lbm tank of methylamine. If the entire tank is releasedcontinuously during a 20-minute time period, determine the concentration in ppm at adistance 1 mile directly downwind. Does this exceed published exposure limits formethylamine? Assume the release is at ground level, and it is an overcast night with a 5mph wind.arrow_forwardEmergency response for the rupture of an ammonia pipeline is being planned. Themaximum estimated flow rate from the rupture is 20 kg/s. Local authorities havedetermined that evacuations are necessary if the concentration exceeds the ERPG-2 level.Assume a temperature of 20˚C, wind speed of 3 m/s, atmospheric pressure of 1 atm, 70%cloud cover and rural conditions. State any other assumptions.a. How far directly downwind needs to be evacuated?b. Using a spreadsheet (such as excel), draw a plot of the isopleth at thisconcentration. You should have at least 8 different distances downwind markedon your plot.arrow_forward
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