Automotive Technology (Custom)
6th Edition
ISBN: 9781337495356
Author: ERJAVEC
Publisher: Cengage
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Chapter 33, Problem 10ASRQ
While discussing electric exhaust gas recirculation (EEGR) systems: Technician A says that some are air cooled. Technician B says that some are cooled by engine coolant. Who is correct?
a. Technician A only
b. Technician B only
c. Both A and B
d. Neither A nor B
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Students have asked these similar questions
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 33 Solutions
Automotive Technology (Custom)
Ch. 33 - Explain why a small PCV valve opening is adequate...Ch. 33 - At what temperature do nitrogen atoms combine with...Ch. 33 - Describe the operation of a digital EGR valve.Ch. 33 - Name the three types of emissions being controlled...Ch. 33 - The PCV system prevents from escaping to the...Ch. 33 - In a negative backpressure EGR valve, if the...Ch. 33 - Describe how a selective catalytic reduction...Ch. 33 - HC emissions may come from the tailpipe or...Ch. 33 - What types of catalyst are typically used to...Ch. 33 - Why is a PCV system critical to an engines...
Ch. 33 - Which of the following systems is designed to...Ch. 33 - What is a catalyst?Ch. 33 - Rather then rely on the AIR system for extra...Ch. 33 - Which of the following statements about carbon...Ch. 33 - Why do the EGR systems on many late-model diesel...Ch. 33 - While discussing PCV valve operation: Technician A...Ch. 33 - While discussing EGR systems with a differential...Ch. 33 - While discussing evaporative (EVAP) systems:...Ch. 33 - Technician A says that an EGR valve that is stuck...Ch. 33 - While discussing SCR systems: Technician A says...Ch. 33 - While discussing automotive emissions: Technician...Ch. 33 - Technician A says that during oxidation, as NOx...Ch. 33 - While discussing PCV systems without a PCV valve:...Ch. 33 - While diagnosing the cause of high HC and O2...Ch. 33 - While discussing electric exhaust gas...
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