AUTOMOTIVE TECHNOLOGY TECH MANUAL
7th Edition
ISBN: 9781337794220
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 6, Problem 10MC
Technician A uses a high-impedance testlight on the high-voltage systems in hybrid vehicles. Technician B uses only CAT-III test instruments to check high- voltage systems. Who is correct?
- Technician A
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A buffer solution is made by mixing 0.1 M acetic acid (HA) and 0.05 M sodium acetate (A⁻). The pKa of acetic acid is 4.76. Due to an experimental error, the actual pH was not recorded, and we need to solve for the concentration of the conjugate base (A⁻) given that the desired pH should be 4.90. Use the Bisection Method to find the concentration of A.
Chapter 6 Solutions
AUTOMOTIVE TECHNOLOGY TECH MANUAL
Ch. 6 - Explain why testlights are not recommended for...Ch. 6 - Name the two basic types of compression gauges.Ch. 6 - What tool is used to test engine manifold vacuum.Ch. 6 - Describe two methods of trapping asbestos/brake...Ch. 6 - True or False? A compression gauge will show the...Ch. 6 - True or False? A lab scope is a visual voltmeter...Ch. 6 - True or False? A brake shoe adjusting gauge is an...Ch. 6 - Prob. 1MCCh. 6 - Technician A says that a brake drum micrometer has...Ch. 6 - Technician A says that a pyrometer measures...
Ch. 6 - Prob. 4MCCh. 6 - Technician A uses a digital volt/ohmmeter to test...Ch. 6 - Technician A says that a charging station removes...Ch. 6 - Which of the following statements about manifold...Ch. 6 - When conducting an oil pressure test: Technician A...Ch. 6 - Which of the following conditions can be revealed...Ch. 6 - Technician A uses a high-impedance testlight on...Ch. 6 - Technician A says that a sulfated and plugged fuel...Ch. 6 - The tests conducted by a scan tool can also be...Ch. 6 - When using a fuel injector pulse tester....Ch. 6 - To measure engine cranking current, a DNIM...Ch. 6 - While discussing a clutch alignment tool....Ch. 6 - Technician A says that ball joints may be pressed...Ch. 6 - Which of the following is not a suitable way to...Ch. 6 - Prob. 18MC
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- 1. (15) John had an loan plan shown in the following discrete cash flow diagram: $4,000 $6,000 GI $2,000 5 7 1 2 3 4 $3,000 $4,000 ? Years a. Please describe this diagram in terms of borrowing and payback. b. How much does John need to pay to totally payoff the loan at the end of year 8 if the interest rate is 8%? c. If John pays the sam amount of money at year 8, how much can John borrow at year 0 without paying back in between with the same interest rate?arrow_forwardA buffer solution is made by mixing 0.1 M acetic acid (HA) and 0.05 M sodium acetate (A⁻). The pKa of acetic acid is 4.76. Due to an experimental error, the actual pH was not recorded, and we need to solve for the concentration of the conjugate base (A⁻) given that the desired pH should be 4.90. Use the Bisection Method to find the concentration of A.arrow_forward1. Liquid heptane is stored in a 100,000-L storage vessel that is vented directly to air. The heptane is stored at 25°C and 1 atm pressure. The liquid is drained from the storage vessel and all that remains in the vessel is the air saturated with heptane vapor. a. Is the vapor in the storage vessel flammable? b. What is the TNT equivalent for the vapor remaining in the vessel? c. If the vapor explodes, what is the overpressure 50 m from the vessel? d. What damage can be expected at 50 m?arrow_forward
- 2. You have decided to use a vacuum purging technique to purge oxygen from a reactor vessel to reduce the concentration to 2.0% (mol). The reactor is 18 ft diameter and 40 ft tall. The temperature is 80°F. Assume that the vacuum purge goes from atmospheric pressure to 10.0 psia. How many purge cycles are required and how many total moles of nitrogen must be used? Assume the purge is done with pure nitrogen. 3. If the purging described in problem 2 takes place using nitrogen that has 1% (mol) oxygen in it, how many vacuum purge cycles are required? How many total moles of the inert gas must be used? 4. If the purging described in problem 2 is done by way of a "sweep-through" purge instead of a vacuum purge, for how long (in minutes) must the inert gas flow through the vessel if there is a 20 psig supply of pure nitrogen available at 150 CFM (ft³/min)? How much nitrogen must be used (lbm)?arrow_forward5. Look at Figure 7-14. Determine the voltage developed between the steel nozzle and the grounded vessel, and how much energy is stored in the nozzle. Explain the potential hazards for cases A and B from the following table: Case A Case B Hose length (ft) 75 75 Hose diameter (in) 2.0 2.0 Flow rate (gpm) 30 30 Liquid conductivity (mho/cm) 2x10-8 1x10-14 Dielectric constant 2.3 25 Density (g/cm³) 0.8 0.9 6. In Problem 5, case B, what would be the most effective way to reduce the potential hazards in this situation?arrow_forward2. You have decided to use a vacuum purging technique to purge oxygen from a reactor vessel to reduce the concentration to 2.0% (mol). The reactor is 18 ft diameter and 40 ft tall. The temperature is 80°F. Assume that the vacuum purge goes from atmospheric pressure to 10.0 psia. How many purge cycles are required and how many total moles of nitrogen must be used? Assume the purge is done with pure nitrogen.arrow_forward
- An 8-foot ion exchange bed needs to be backwashed with water to remove impurities. The particles have a density of 1.24 g/cm³ and an average size of 1.1 mm. Calculate: a. The minimum fluidization velocity using water at 30°C? b. The velocity required to expand the bed by 30%? Assumptions: The ion exchange bed particles are spherical (sphericity = 1.1), and the minimum fluidization porosity (ɛM) is 0.3. Notes: At 30°C, the viscosity (μ) of water is 0.797 cP, and the density (ρ) is 0.995 g/cm³.arrow_forwardfluidized bed reactor uses a solid catalyst with a particle diameter of 0.25 mm, a bulk density of 1.50 g/mL, and a sphericity of 0.90. Under packed bed conditions, the porosity is 0.35, and the bed height is 2 m. The gas enters from the bottom of the reactor at a temperature of 600°C, with a viscosity of 0.025 cP and a density of 0.22 lb/ft³. At minimum fluidization, the porosity reaches 0.45. Calculate: a. The minimum superficial velocity (VM) of the gas entering the fluidized column. b. The bed height if V = 2 VM c. The pressure drop under conditions where V =2.5 VMarrow_forwardA fluidized bed reactor uses a solid catalyst with a particle diameter of 0.25 mm, a bulk density of 1.50 g/mL, and a sphericity of 0.90. Under packed bed conditions, the porosity is 0.35, and the bed height is 2 m. The gas enters from the bottom of the reactor at a temperature of 600°C, with a viscosity of 0.025 cP and a density of 0.22 lb/ft³. At minimum fluidization, the porosity reaches 0.45. Calculate: a. The minimum superficial velocity (VM) of the gas entering the fluidized column. b. The bed height if V = 2 VM c. The pressure drop under conditions where V =2.5 VMarrow_forward
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