AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
7th Edition
ISBN: 9780357096789
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 20, Problem 3ASRQ
Composite headlights are being discussed: Technician A says that they have replaceable bulbs. Technician B says that a cracked or broken lens will prevent the operation of a composite headlamp. Who is correct?
- Technician A
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14.14. A three-stage evaporator is fed with
1.25 kg/s of a liquor which is concentrated
from 10 to 40 per cent solids by mass. The
heat transfer coefficients may be taken
as 3.1, 2.5 and 1.7 kW/m² K, respectively,
in each effect. Calculate the steam
flow at 170 kN/m² and the temperature
distribution in the three effects, if:
(a) the feed is at 294 K, and
(b) the feed is at 355 K.
Forward feed is used in each case and
the values of U are the same for the two
systems. The boiling point in the third
effect is 325 K and the liquor has no
boiling point rise.
O
Form of the second question
3
Question 2: 500
In the figure shown, gear 2 rotates at 1000rpm.
It transmits a power of 5kw to gear 4 via gear
Loose 3 idler all gears spur, angle
Gear pressure =200, and inclusion = 5m. Draw
Analyze the forces on gear 3 and then find the reactions on
Column 6, knowing the number of teeth
N₂ = 12, N3 = 60, N₁ = 40
Example (7):
Determine the heating surface area
required for the production of 2.5kg/s of
50wt% NaOH solution from 15 wt% NaOH
feed solution which entering at 100 oC to
a single effect evaporator. The steam is
available as saturated at 451.5K and the
boiling point rise (boiling point evaluation)
of 50wt% solution is 35K. the overall
heat transfer coefficient is 2000 w/m²K.
The pressure in the vapor space of the
evaporator at atmospheric pressure. The
solution has a specific heat of 4.18kJ/
kg.K. The enthalpy of vaporization under
these condition is 2257kJ/kg
Example (6):
5:48 م
An evaporator is concentrating F kg/h at
311K of a 20wt% solution of NaOH to 50wt
%. The saturated steam used for heating is
at 399.3K. The pressure in the vapor space
of the evaporator is 13.3 KPa abs. The
5:48
O
Chapter 20 Solutions
AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
Ch. 20 - What lighting systems are controlled by the...Ch. 20 - What is a CHMSL?Ch. 20 - How many wires are normally connected to a double...Ch. 20 - What are the most probable causes for one low-beam...Ch. 20 - Why do some manufacturers protect the headlamp...Ch. 20 - What types of headlights do not have a filament?Ch. 20 - What is the primary tool used to diagnose an auto...Ch. 20 - True or False? HID lamps produce more heat and...Ch. 20 - True or False? The headlights on many adaptive...Ch. 20 - True or False? All turn signal flasher units...
Ch. 20 - Which of the following may cause the turn signal...Ch. 20 - Circuits that can energize the high beams even if...Ch. 20 - Which of the following would probably not cause...Ch. 20 - The stoplight switch is normally mounted on the...Ch. 20 - Which of the following is not a true statement...Ch. 20 - While troubleshooting a headlight problem:...Ch. 20 - Technician A says that the condition of the...Ch. 20 - Composite headlights are being discussed:...Ch. 20 - While troubleshooting a brake light problem;...Ch. 20 - Technician A says that a composite headlight...Ch. 20 - While diagnosing an HID lamp that does not turn...Ch. 20 - Technician A says that flickering vehicle lights...Ch. 20 - The turn signals operate in the left direction...Ch. 20 - The right back-up lamp is dim: Technician A says...Ch. 20 - When the headlights are switched from low beam to...
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