Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
8th Edition
ISBN: 9781305578708
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 3, Problem 5RQ
What is the relationship between pressure and the boiling point of liquids?
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University of Babylon
College of Engineering\Al-Musayab
Automobile Engineering Department
Final Examination/1st Attempt
جامعة بابل
Subject: I. C. Engines I
Maximum Time: 3 Hours
Class: 3rd
Date:
/ / 2023
Answer 07 of the following questions
(First Semester) 2022/2023
(1) Choose the correct answer for eight only from below
1- Indicator diagram shows for one complete revolution of crank
Maximum mark: 50 Deg.
a) variation of kinetic heat in the cylinder. b) variation of pressure head in the cylinder
c) variation of kinetic and pressure heat in the cylinder. d) none of the above.
2- A carburetor is used to supply
(a) petrol, air and lubricating oil (b) air and diesel (e) petrol and lubricating oil (d) petrol and air.
3- In a four stroke cycle petrol engine, the charge is compressed when
a) inlet valve is closed. b) exit valve is closed.
c) both inlet and exit valves are closed. d) both inlet and exit valves are open.
(8 deg.)
4- For an engine operating on air standard Otto cycle, the…
(6) Determine the sizes of fuel orifice to give a 13.5 air fuel ratio, if the venture throat has 3 cm diameter and the
pressure drop in the venture is 6.5 cm Hg. The air temperature and pressure at carburetor entrance are 1 bar and
27 °C respectively. The fuel orifice is at the same level as that of the float chamber. Take density of gasoline as
(7 deg.)
740 kg/m³ and discharge coefficient as unity. Assume atmospheric pressure to be 76 cm of Hg.
(7) A four-cylinder, four-stroke internal combustion engine has a bore of 87 mm. and a stroke of 77 mm. The
clearance volume is 17% of the stroke volume and the engine with speed of 2700 rpm. The processes within
each cylinder are modeled as an Otto cycle with a pressure of 1 atm and a temperature of 17 °C at the beginning
(7 deg.)
of compression. The maximum temperature in the cycle is 2717 °C
(a) Draw the P-v diagram; label Pressures, Temperatures, Qin, and Qual
(b) Calculate the mass of air at the beginning of the cycle
(c) Calculate the…
University of Babylon
College of Engineering\Al-Musayab
Automobile Engineering Department
Final Examination/1st Attempt
جامعة بابل
Subject: I. C. Engines I
Maximum Time: 3 Hours
Class: 3rd
Date:
/ / 2023
Answer 07 of the following questions
(First Semester) 2022/2023
(1) Choose the correct answer for eight only from below
1- Indicator diagram shows for one complete revolution of crank
Maximum mark: 50 Deg.
a) variation of kinetic heat in the cylinder. b) variation of pressure head in the cylinder
c) variation of kinetic and pressure heat in the cylinder. d) none of the above.
2- A carburetor is used to supply
(a) petrol, air and lubricating oil (b) air and diesel (e) petrol and lubricating oil (d) petrol and air.
3- In a four stroke cycle petrol engine, the charge is compressed when
a) inlet valve is closed. b) exit valve is closed.
c) both inlet and exit valves are closed. d) both inlet and exit valves are open.
(8 deg.)
4- For an engine operating on air standard Otto cycle, the…
Chapter 3 Solutions
Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
Ch. 3 - Name three reasons why ice melts in an icebox:...Ch. 3 - What are the approximate temperature ranges tor...Ch. 3 - One ton of refrigeration is A. 1200 Btu. B. 12,000...Ch. 3 - Describe briefly the basic refrigeration cycle.Ch. 3 - What is the relationship between pressure and the...Ch. 3 - What is the function of the evaporator in a...Ch. 3 - What does the compressor do in the refrigeration...Ch. 3 - Define a superheated vapor.Ch. 3 - The evaporating pressure is 76 psig for R-22 and...Ch. 3 - If the evaporating pressure was 76 psig for R-22...
Ch. 3 - Define the term subcooled liquid.Ch. 3 - The condensing pressure is 260 psig and the...Ch. 3 - The condensing pressure is 260 psig and the...Ch. 3 - What is meant by a saturated liquid and vapor?Ch. 3 - What is meant by desuperheating a vapor?Ch. 3 - What happens to the refrigerant in the condenser?Ch. 3 - What happens to refrigerant heat in the condenser?Ch. 3 - The metering device A. cycles the compressor. B....Ch. 3 - What is adiabatic expansion?Ch. 3 - Describe flash gas, and tell how it affects...Ch. 3 - Quality means _________ when referring to a...Ch. 3 - Describe the difference between a reciprocating...Ch. 3 - List the cylinder color codes for R-12, R-22,...Ch. 3 - Define enthalpy.Ch. 3 - Define a pure compound refrigerant, and give two...Ch. 3 - Define net refrigeration effect as it applies to...Ch. 3 - Define heat of compression, and explain how it is...Ch. 3 - Define flash gas, and explain how it applies to...Ch. 3 - Define temperature glide as it pertains to a...Ch. 3 - Define a zeotropic refrigerant blend, and give an...Ch. 3 - Define a near-azeotropic refrigerant blend, and...
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- 1,1 51 K/s .. زيد عامر اليوم عند 9:34 م ۱۷۲ من ۱۷۳ University of Babylon College of Engineering Al-Musayab Automobile Engineering Department Final Examination/1" Attempt T19:34 Subject: 1. C. Engines I Maximum Time: 3 Hours Class: 3 Date: 1 / 2023 Answer 07 of the following questions (First Semester) 2022/2023 (1) Choose the correct answer for eight only from below 1- Indicator diagram shows for one complete revolution of crank Maximum mark: 50 Deg. a) variation of kinetic heat in the cylinder. b) variation of pressure head in the cylinder e) variation of kinetic and pressure heat in the cylinder, d) none of the above. 2- A carburetor is used to supply (a) petrol, air and lubricating oil (b) air and diesel (c) petrol and lubricating oil (d) petrol and air. 3- In a four stroke cycle petrol engine, the charge is compressed when a) inlet valve is closed. b) exit valve is closed. e) both inlet and exit valves are closed. d) both inlet and exit valves are open. (8 deg.) 4- For an engine…arrow_forward1- Determine the following: 1- RSHF? 2- C.C.C in tons-ref. 3- Mass of supply air? Fresh Spray chilled water S air 100% RH To 34 C db & 26 wbt S Operation fan room I Exhaust air Ti 22 C db & 50% RHarrow_forwardHow do I solve this task A weight for a lift is suspended using an adapter. The counterweight is held up with 4 screws. The weight F is 3200kg. The screws have a strength class of 8.8. Safety factor 3 Which is the smallest bunch size that can be used?+_Sr/Fm =0,16Gr=0,71ơ=800·0.8=640 MPaAs=?Fmax= As·ơ·GrFs=ơs·AsFFm= Fs· GFSF =SF / FFm · FFm Fpreload =Fload / SF → Fload /3Fpreload per screw =Fload / SF → Fload /4As=Fpreload per screw /ơ·Gr → As= Fpreload per screw / 640· 0.71 The correct answer should be M12 with As=84.3mm²arrow_forward
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- 5. Determine the transfer function of G(s) = 01(s)/T₁(s) and 02(s)/T₁ for the mechanical system shown in Figure Q5. (Hints: assume zero initial condition) T₁(t) 01(t) 102(1) Ол N1 D1 D2 No. 1790220000 N2 Figure Q5 K2arrow_forwardA spring package with two springs and an external force, 200N. The short spring has a loin of 35 mm. Constantly looking for spring for short spring so that total compression is 35 mm (d). Known values: Long spring: Short spring:C=3.98 N/mm Lo=65mmLo=87.4mmF=c·fTotal compression is same for both spring. 200 = (3.98(c1) × 35) + (c₂ × 35) 200 = 139.3 + 35c₂ 200 - 139.3 = 35c₂ 60.7 = 35c₂ c₂ = 60.7/35 Short spring (c₂) = 1.73 N/mm According to my study book, the correct answer is 4.82N/mm What is wrong with the calculating?arrow_forwardWhat is the reason for this composition?arrow_forward
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