Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 36, Problem 5MC
The component that changes the molecular structure of hydrocarbons into hydrogen-rich gas is called a.
a. pressure container
b. fuel cell
c. fuel injector
d. reformer
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Q.2: (15 Marks)
=
1400
For the following system, determine the first natural frequency using Dunkerley's equation,
Given that the disk has moment of inertia J = 2 kg.m², the shaft has G = 20 GPa, p
kg/m³, polar moment of cross-sectional area of the shaft Ip = 8×108 m².
500 mm
220 mm
k=200 N/m
FOF
m=1 kg
14.14
56.56. W
сл
1 Revolute four-bar mechanism, AB=60mm, BC=130mm, CD=140mm, AD=200mm,
CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
The roof truss shown carries roof loads, where P = 10 kN. The truss is consisting of circular arcs top andbottom chords with radii R + h and R, respectively.Given: h = 1.2 m, R = 10 m, s = 2 m.Allowable member stresses:Tension = 250 MPaCompression = 180 MPa1. If member KL has square section, determine the minimum dimension (mm).2. If member KL has circular section, determine the minimum diameter (mm).3. If member GH has circular section, determine the minimum diameter (mm).ANSWERS: (1) 31.73 mm; (2) 35.81 mm; (3) 18.49 mm
Chapter 36 Solutions
Automotive Technology
Ch. 36 - Why are carbon dioxide emissions a concern?Ch. 36 - List five things a driver of a BEV can do to...Ch. 36 - What makes up the propulsion system in a BEV?Ch. 36 - What basic factors affect the required time to...Ch. 36 - There are two basic ways a BEV is connected to an...Ch. 36 - Why is water control so important to the...Ch. 36 - Explain what the ratings of kilowatts and kilowatt...Ch. 36 - True or False? All fuel cell vehicles have...Ch. 36 - True or False? A PEM fuel cell needs to operate at...Ch. 36 - Which of the statements about hydrogen is true? a....
Ch. 36 - Which of the following CANNOT be used as a source...Ch. 36 - Which of the following statements about fuel cells...Ch. 36 - What is the basic fuel for a fuel cell? a....Ch. 36 - The component that changes the molecular structure...Ch. 36 - Which of the following statements about hydrogen...Ch. 36 - Technician A says power is the ability to do work....Ch. 36 - While discussing inductive charging: Technician A...Ch. 36 - Technician A says some BEVs use liquid to heat the...Ch. 36 - While discussing charger connections: Technician A...Ch. 36 - Technician A says that a fuel cell produces...Ch. 36 - While diagnosing the control system of a BEV:...Ch. 36 - Prob. 7ASRQCh. 36 - Technician A says that all FCEVs have regenerative...Ch. 36 - Technician A says that gasoline can be used as a...Ch. 36 - While discussing hydrogen: Technician A says that...
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- A counter flow double pipe heat exchanger is being used to cool hot oil from 320°F to 285°F using cold water. The water, which flows through the inner tube, enters the heat exchanger at 70°F and leaves at 175°F. The inner tube is ¾-std type L copper. The overall heat transfer coefficient based on the outside diameter of the inner tube is 140 Btu/hr-ft2-°F. Design conditions call for a total heat transfer duty (heat transfer rate between the two fluids) of 20,000 Btu/hr. Determine the required length of this heat exchanger (ft).arrow_forward! Required information A one-shell-pass and eight-tube-passes heat exchanger is used to heat glycerin (cp=0.60 Btu/lbm.°F) from 80°F to 140°F by hot water (Cp = 1.0 Btu/lbm-°F) that enters the thin-walled 0.5-in-diameter tubes at 175°F and leaves at 120°F. The total length of the tubes in the heat exchanger is 400 ft. The convection heat transfer coefficient is 4 Btu/h-ft²°F on the glycerin (shell) side and 70 Btu/h-ft²°F on the water (tube) side. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the rate of heat transfer in the heat exchanger before any fouling occurs. Correction factor F 1.0 10 0.9 0.8 R=4.0 3.0 2.0.15 1.0 0.8.0.6 0.4 0.2 0.7 0.6 R= T1-T2 12-11 0.5 12-11 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 (a) One-shell pass and 2, 4, 6, etc. (any multiple of 2), tube passes P= T₁-11 The rate of heat transfer in the heat exchanger is Btu/h.arrow_forward! Required information Air at 25°C (cp=1006 J/kg.K) is to be heated to 58°C by hot oil at 80°C (cp = 2150 J/kg.K) in a cross-flow heat exchanger with air mixed and oil unmixed. The product of heat transfer surface area and the overall heat transfer coefficient is 750 W/K and the mass flow rate of air is twice that of oil. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Air Oil 80°C Determine the effectiveness of the heat exchanger.arrow_forward
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