Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 19, Problem 1TF
True or False? A faulty voltage regulator can only cause a no-charge condition.
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340 lb
340 lb
Δ
4. In a table of vector differential operators, look up the expressions for V x V in a cylindrical coordinate
system.
(a) Compute the vorticity for the flow in a round tube where the velocity profile is
= vo [1-(³]
V₂ = Vo
(b) Compute the vorticity for an ideal vortex where the velocity is
Ve=
r
where constant.
2πг
(c) Compute the vorticity in the vortex flow given by
Ve=
r
2лг
1- exp
(
r²
4vt
(d) Sketch all the velocity and vorticity profiles.
In the figure, Neglects the heat loss and kinetic and potential energy changes, calculate the work produced by the
turbine in kJ
T = ???
Steam at
P=3 MPa,
T = 280°C
Turbine
Rigid tank
V = 1000 m³
Turbine
Rigid tank
V = 100 m³
V = 1000 m³
V = 100 m³
The valve is
opened.
Initially: evacuated
(empty) tank
O a. 802.8
Initially: Closed valve
O b. 572
O c. 159.93
Od. 415
e. 627.76
equilibrium
Chapter 19 Solutions
Automotive Technology
Ch. 19 - To protect electronic circuits, some voltage...Ch. 19 - What is the purpose of the diodes in the...Ch. 19 - How does a voltage regulator regulate the voltage...Ch. 19 - Describe the differences between an overrunning...Ch. 19 - What would happen to the output of an AC generator...Ch. 19 - Describe the basic difference between a DC motor...Ch. 19 - True or False? A faulty voltage regulator can only...Ch. 19 - True or False? A generator that is not producing...Ch. 19 - Prob. 1MCCh. 19 - What part of the AC generator is the rotating...
Ch. 19 - Which type of stator winding has two windings in...Ch. 19 - Slip rings and brushes. mount on the rotor shaft...Ch. 19 - The alternating current produced by the AC...Ch. 19 - Prob. 6MCCh. 19 - Prob. 7MCCh. 19 - Technician A says that the waveform produced by an...Ch. 19 - While discussing what is indicated by a vehicles...Ch. 19 - When checking the charging system on a late-model...Ch. 19 - Prob. 4ASRQCh. 19 - Technician A says generator output should be...Ch. 19 - Technician A says that many newer charging systems...Ch. 19 - While diagnosing rapid and severe belt wear after...Ch. 19 - Prob. 8ASRQCh. 19 - Prob. 9ASRQCh. 19 - Prob. 10ASRQ
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- A 40-cm-diameter, 127-cm-high cylindrical hot water tank is located in the bathroom of a house maintained at 20°C. The surface temperature of the tank is measured to be 44°C and its emissivity is 0.4. Taking the surrounding surface temperature to be also 20°C, determine the rate of heat loss from all surfaces of the tank by natural convection and radiation. The properties of air at 32°C are k=0.02603 W/m-K, v=1.627 x 10-5 m²/s, Pr = 0.7276, and ẞ = 0.003279 K-1 The rate of heat loss from all surfaces of the tank by natural convection is The rate of heat loss from all surfaces of the tank by radiation is W. W.arrow_forwardA 2.5-m-long thin vertical plate is subjected to uniform heat flux on one side, while the other side is exposed to cool air at 5°C. The plate surface has an emissivity of 0.73, and its midpoint temperature is 55°C. Determine the heat flux subjected on the plate surface. Uniform heat flux -Plate, € = 0.73 Cool air 5°C 7 TSUIT Given: The properties of water at Tf,c= 30°C. k=0.02588 W/m.K, v=1.608 x 10-5 m²/s Pr = 0.7282 The heat flux subjected on the plate surface is W/m²arrow_forwardHot water is flowing at an average velocity of 5.82 ft/s through a cast iron pipe (k=30 Btu/h-ft-°F) whose inner and outer diameters are 1.0 in and 1.2 in, respectively. The pipe passes through a 50-ft-long section of a basement whose temperature is 60°F. The emissivity of the outer surface of the pipe is 0.5, and the walls of the basement are also at about 60°F. If the inlet temperature of the water is 150°F and the heat transfer coefficient on the inner surface of the pipe is 30 Btu/h-ft².°F, determine the temperature drop of water as it passes through the basement. Evaluate air properties at a film temperature of 105°C and 1 atm pressure. The properties of air at 1 atm and the film temperature of (Ts+ T∞)/2 = (150+60)/2 = 105°F are k=0.01541 Btu/h-ft-°F. v=0.1838 × 10-3 ft2/s, Pr = 0.7253, and ẞ = 0.00177R-1arrow_forward
- hand-written solutions only, please. correct answers upvoted!arrow_forwardhand-written solutions only, please. correct answers upvoted!arrow_forward! Required information Consider a flat-plate solar collector placed horizontally on the flat roof of a house. The collector is 1.3 m wide and 2.8 m long, and the average temperature of the exposed surface of the collector is 42°C. The properties of air at 1 atm and the film temperature are k=0.02551 W/m-°C, v = 1.562 × 10-5 m²/s, Pr = 0.7286, and ẞ= 0.003356 K-1 Determine the rate of heat loss from the collector by natural convection during a calm day when the ambient air temperature is 8°C. The rate of heat loss from the collector by natural convection is W.arrow_forward
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