a) Starting from the observations made by Boyle and Charles and Gay-Lussac (see gas triples, do you expect the pressure to change? You should also now be able to successfully attempt Q2 on the May 2013 and May 2014 papers for Engineering Thermodynamics. Revision : Electricity. Section 2.3.2 of the notes. be maintained at 21oC at all times. How much work does the water do on the piston, per unit mass? Sketch a T-v or P-v diagram for each state. e) Briefly explain the basic principles of the three modes of heat transfer. Using Table 1, Psat@100°C = 1.0142 bar = 0.10142 MPa Pressure, temperature, mass, volume, (defined as mass of saturated vapour divided by total mass of substance), See Section 1.2.5 of the notes for the proof, u = uf + x(ug – uf) = 49.79 + 0.6(227.06 – 49.79) = 156.15 kJ/kg, (b) P = 7 MPa, saturated liquid Volume – extensive Saturated liquid is at the saturation temperature and any heating of saturated liquid will Thermodynamics 2 Tutorial Questions and Solutions, ) What can you say about the sols, A and B, from the following information concerning the relative molar critical coagulation concentrations (CCCs)? volume. are shaft work, spring work, work associated with stretching of a liquid film and work done to Please sign in or register to post comments. 2013 (b) Qout=500kJ, max η=37.1% Questions 4 and 5 are exam-standard questions. v = average specific volume (of a saturated mixture of liquid and vapour) We know that for an ideal gas, work done w is … e) Briefly explain the basic principles of the three modes of heat transfer. 1294.46 kJ of heat are system are positive; heat transfer from a system and work done on a system are negative. Since P 1 > 2.339 kPa, state 1 is subcooled liquid. Relevant exam questions diagram for the process. School of Engineering, University of Edinburgh Determine the internal energy of refrigerant-134a at a temperature of 0°°°°C and a [Pgauge = 0.133 bar = 0.132 atm, Pabs = 1.146 bar = 1.132 atm], A glass tube is attached to a water pipe at a right angle. kg MPa m kPa According to the classical sign convention, heat transfer to a system and work done by a Engine … independent of the path used to arrive at the system condition. b) What is the difference between saturated vapour and superheated vapour? Unified Quiz 1: Thermodynamics October 3, 2003 One 81/2” x 11” sheet (two sides) of notes Calculators allowed. Once the phase change is complete, further Describe qualitatively what is going to happen and draw the corresponding P-v • … Check the reduced temperature and pressure for nitrogen. See Section 2.1.2 of the notes. ], May 2007, Q1 – (i) 17.6 kJ, (ii) 20.8 kJ, (iii) 30.0 kJ. Using Table 2, u = ug@70bar = 2580.9 kJ/kg. Thermodynamics key facts (4/9) ... • Try questions from the sample exam papers on Blackboard and/or the textbook. Find the ratio of the these conditions, the water is in the liquid phase). (d) P = 7 MPa, T = 100°°°°C Yes, if pressure is lower than at the triple point (0.61 kPa at 0.01°C). Tutorial 2B: Specific Heats and First Law Analysis of Open Systems. cycle produces 50 MW of net work. the boundaries. [Yes – reversible; Wnet=1855.4 kJ; ηth=58.9%], Relevant exam questions Thermodynamics. [W = 310.2 kJ/kg], Air undergoes a constant pressure cooling process in which the temperature You should now be able to successfully attempt the following questions. and a cross-sectional area of 0.04 m 2. Evaluate the maximum possible (Carnot) COP of a refrigerator 60 kg and a cross-sectional area of 0.04 m 2. Water is placed in a piston-cylinder device at 2 0 °°°°C, 0.1 MPa. the bottom of the tube is 135 kPa and the local atmospheric pressure is 92 kPa, [3.3kW], A house loses heat at a rate of 7.2 MJ/h per oC difference between the inside and Is the Clausius inequality satisfied and is the cycle reversible or irreversible? constant pressure but with a further increase in Here you can get Class 11 Important Questions Chemistry based on NCERT Text book for Class XI.Chemistry Class 11 Important Questions are very helpful to score high marks in board exams. Section 2.2. d) What is ‘other’ work? water 1000 kg/m 3 ). Since T > Tsat, the state is superheated. 2. steady-state, steady-flow devices? Total energy – extensive. 15.0 0.0157 400 Superheated vapour heat reservoir at 652oC and rejects heat to a low-temperature heat reservoir at 30oC. Why different types of sound are produced in different bikes, though they run on SI Engines? (b) Saturated vapour decreases by 100 °C. vg@2bar = 0.8857 m 3 /kg. The system may do work on its surroundings because of moving boundaries due to answers. e) Consider a piston cylinder device containing water at 1 MPa and 150 °C (under The piston has a mass of 60 kg 0.8 0. Explain the Stages of Combustion in SI Engines. Answers > Physics > Molecular Physics | Thermodynamics. process? numerical answers. System: The water contained in the piston-cylinder device, Since there is no Wother mentioned in the problem, we can assume that the net work is. diagram. Show that nitrogen can be expected to behave as (c) P = 7 MPa, T = 600°C, Tutorial 2A: First Law Analysis of Closed Systems. outside of the house. Answer to Question #150491 in Molecular Physics | Thermodynamics for Banda 2020-12-11T00:42:59-0500. 0.4 0.4624 143.6 Saturated vapour. The First Law of Thermodynamics Work and heat are two ways of transfering energy between a system and the environment, causing the system’s energy to change. as an ideal gas during this process and determine the minimum work of • Put your name on each page of the exam. 455 °C u=? system? If some heat is transferred to the system and the volume of the 440 °C 2959.4 kJ/kg Hydrogen: R=4.124kJ/(kgK); Cp=14.31kJ/(kgK); k=1. Other approaches can also be correct and could lead to slightly different Since the mass of the water is unknown, we calculate the work per unit mass. At SeeTheSolutions.net, we provide access to the best-quality, best-value private tutoring service possible, tailored to your course of study. 1.00 0.001127 180 Saturated liquid From 2019, the exam format is changed so that you need only answer ALL Section A (1-3 Thermodynamics, 4-6 statistical mechanics), ONE question from section B (Thermodynamics… [(c)V 1 = 1.78m3, N 1 = 0.072kmol, MN2 = 28kg/kmol; (d)P increase = 0.334bar], Determine the internal energy of refrigerant-134a at a temperature of 0°C and a quality 460 °C 2998.1kJ/kg, Then using the above table to the following ratios can be formed, (455 – 440)/(460 – 440) = (u – 2959.4)/(2998.1 – 2959.4) and atmospheric pressure is 1.013 bar. Since P > Psat, the state is subcooled liquid. Black line – saturation line constant pressure), wb P v v boundary. Calculate the lowest outside temperature for which a heat If the water pressure at the Change in enthalpy of a system is the heat supplied for ........ 39. applied to a steady-state, steady-flow device with one inlet and one exit. compressed liquid, saturated mixture, or superheated vapor. where these are properties at 300K, Ru = 8.314 kJ/(kmolK)). If No books allowed. region in space chosen for study. View Advanced Thermodynamics Practice Questions and Answers 4 (1).pdf from ME 3325 at Texas Tech University. The specific volume is between vf and vg, so the water is a saturated mixture of liquid and Now, use linear interpolation of values for 70 bar from Table 3 to find u. T u [Qnet1-4 = 1072 kJ]. (a) A thermodynamic system, or simply system, is defined as a quantity of matter or a Other approaches can also be correct and could lead to slightly The building is estimated to be losing heat at a You can send your comments directly at info@mechanicaltutorial.com. e) Consider a piston cylinder device containing water at 1 MPa and 150 °C (under [COP=11.96; No], A heat pump is to be used to heat a building during the winter. vf@2bar = 0.001061 m 3 /kg [Pabs = 1.1 bar, No pressure change], A manometer reading is 100 mmHg. Thermodynamics deals with the transfer of energy from one place to another and from one form to … quality of 60% (uf@ 0 °°°°C = 49.79 kJ/kg and ug@ 0 °°°°C = 227.06 kJ/kg). Calculate the net work and cycle efficiency for this cycle. b) How is the specific heat ratio (k) defined? Pressure, temperature, °C. Note: These example solutions give one approach to solving the tutorial questions. d) The container is heated so that the temperature of nitrogen increases by 100oC. Explain the symbols and prove the relationship: a) Starting from the definition of enthalpy, show that Cp = Cv + R for an ideal gas. Red line – process path (horizontal at Formula sheet. b) What is the classical sign convention for heat and work? If 3 bar data is available then the expected answer Any characteristic of a system in equilibrium is called a property. and use the ideal gas property relations with constant specific heats and R=0. We decrease the pressure slowly Now we need to determine the state of the water. Different processes involving boundary work are outlined in c) What is boundary work? Temperature and pressure are dependent properties during a phase change process. temperature will increase and vapour will not be formed. The local atmospheric pressure is 0.97 bar, and the [Wnet = -184.5 kJ], Water is placed in a piston-cylinder device at 2 0 °C, 0.1 MPa. pump requiring a power input of 2 kW can maintain the house at 16oC. For nitrogen: R = 0.2968 kJ/(kgK), Tcr = 126.2K, Pcr = 3.39MPa. Draw the path of the process in a P-v Determine the cycle thermal efficiency and the P-v diagram for the process. volume, until saturated liquid conditions are reached. This is the complete list of Multiples Choice Questions Series in Thermodynamics as one of the General Engineering and Applied Sciences (GEAS) topic. Contact us: info@mechanicaltutorial.com, Deals with conversion of mass and energy, Deals with reversibility and irresibility of process, States that if two system are both in equilibrium with a third system,they are in, Production Technology and Manufacturing Process. (d) A closed system consists of a fixed amount of mass and no mass may cross the bar, and the gravitational acceleration is 9.81 m/s 2. raise or accelerate a body. These work forms are called “other” work since they are work not associated with a moving vapour will be smaller. c) What is boundary work? Basic Of Thermodynamics | Interview Question and Answers. successfully attempt Q2 on the May 2013 and May 2014 papers for Engineering Since 600°C > Tsat for this pressure, the state is superheated. Electricity key facts (1/9) • Electric … What is the change in pressure in the container? Give some practical examples. This work is boundary work. [ηth=33.3%; QL=100MW], A Carnot heat engine receives 500 kJ of heat per cycle from a high-temperature Initially, decreasing pressure leads to an increase in different numerical answers. pressure in the pipe Ppipe and the atmospheric pressure Patm: h = (Ppipe - Patm)/ ρg = (135000 Pa – 92000 Pa) / (1000 kg/m 3 x 9.81 m/s 2 ) = 4.4 m. 1. First of thermodynamics … of 60% (uf@ 0 °C = 49.79 kJ/kg and ug@ 0 °C = 227.06 kJ/kg). Thermodynamics/ Thermal Basic Objective Type Question And Answers Thermodynamics Basic objective Question and answers 1.If all the variables of a stream are independent of time it is said to … Thermodynamics is the branch of science concerned with heat and temperature and their relation to energy and work. Find the internal energy of water at the given states for 7 MPa and plot the states on minimum power required to drive the heat pump unit for this outside temperature. cylinder is negligible calculate in SI units absolute pressure inside the cylinder. Assume that air behaves as an ideal gas and that Rair = 0.287 kJ/kg K. vapour and h will be given by: hf@2bar = 504.68 kJ/kg MPa Thermodynamics, science of the relationship between heat, work, temperature, and energy. What is the molar mass of nitrogen? and atm. We've got answers. Thus. e) Complete the table below (for substances that can be assumed to be ideal gases, Using Table 2, u = uf@70bar = 1258.0 kJ/kg. How The net work is negative because work is done on the system during the compression Thermodynamics - 327605 Practice Tests 2019, Thermodynamics technical Practice questions, Thermodynamics tutorials practice questions and explanations. Show that nitrogen can be expected to behave is around 375°C. calculate how high the water will rise in the tube (g = 9.81 m/s 2 and the density of Question #150491. a) What is the difference between saturated liquid and subcooled liquid? Pressure – intensive that energy can be neither created nor destroyed; it can only change forms. Thermodynamics. (This question requires access to thermodynamic tables). The term “thermodynamics” was first used in 1849 in the publication of a. Note: Numerical solutions are based on one approach to solving the tutorial Note: Numerical solutions are based on one approach to solving the tutorial (c) P = 7 MPa, T = 600°°°°C With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. Thermodynamics article. temperature is 25oC. Thermodynamics – Mechanical Engineering Multiple choice Questions : 101. The water does 310.2kJ of work on the piston. interpolation would be time consuming. (3) How do you convert A sol from condition (1) to condition (2)? 0.62 0.42 300 Superheated vapour kg, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Share your documents to get free Premium access, Upgrade to Premium to read the full document, Chemistry and Processes 2 Questions and Solutions, Plant Engineering 2 Tutorial Questions and Solutions: Pipes and Pumps, Plant Engineering 2 Tutorial Questions and Solutions: Compressible Flow, Process Calculations 2 Tutorial Questions and Solutions, Engineering Project Management Tutorial Questions and Solutions. slowly (but steadily) and simultaneously keep the temperature constant at 150 Relevant exam questions Questions 4 and 5 are exam-standard questions. c) Why are temperature and pressure dependent properties in the saturated mixture If the system as a whole is at rest, so … KTU B.TECH S3 THERMODYNAMICS ME205 SOLVED MODEL QUESTIONS KTU B.tech S3 Thermodynamics ME205 Model Questions with Answers (Solved) ktu thermodynamics questions,ktu thermodynamics questions and answers… Confused and have questions? cause some of the liquid to turn to vapour. Here we have covered Important Questions on Thermodynamics for Class 11 Chemistry subject.. Chemistry Important Questions Class 11 are given below.. Determine (a) … points on T-v and P-v diagrams. This is because both temperature and pressure represent the energy of the system. And the quality, x, can be calculated using the Lever Rule What is the definition of a property of a system? process. Oxygen 0.918 1. In the saturated region, u=uf + x (ug-uf), uf@70bar = 1258.0 kJ/kg hfg@2bar = 2201.6 kJ/kg. applied to a general steady-state, steady-flow device. It states that the behavior of these quantities is governed by the four laws of thermodynamics, irrespective of the composition or specific properties of the material or system in question. Get help with your Thermodynamics homework. If the state is saturated the piston to maintain a constant force on the water as it is heated to 400 °°°°C. Practice: Thermodynamics questions. kJ/(kg K). pressure to change? question requires access to thermodynamic tables.) mixture region? Other approaches can also be correct and could lead to slightly different numerical Hydrogen 2.016 10. Mass – extensive 3 MPa in a piston-cylinder device. A piston-cylinder device contains a gas at equilibrium. The University does not Other approaches can also be correct and could lead to slightly different numerical x = dryness fraction Nitrogen: R=0.297kJ/(kgK); Cv=0.743kJ/(kgK); k=1. vfg = difference between specific volume of saturated liquid and saturated vapour 0.75 0.221 167.8 Saturated mixture, x = 0. A glass tube is attached to a water pipe at a right angle. (a) P= 7 MPa, saturated vapour density, total energy; are these properties intensive or extensive? [h = 4.4m], Tutorial 1B: Properties of Pure Substances. m kPa kJ This is an unusually non-linear region. either pressure or temperature increases the energy stored in the system increases as maintains the refrigerated space at 2oC while operating in a room where the First law of thermodynamics … u = 2988.4 kJ/kg, (f) P = 7 MPa, dryness fraction = 95% Saturated vapour exists at saturation temperature where it is about to condense. kJ. d) Is it possible to have water vapour at 0 °C? What is (a) a system (b) an open system (c) an isolated system (d) a closed system? region. Determine: Oxygen: M=32.00kg/kmol; R=0.260kJ/(kgK); Cv=0.658kJ/(kgK)], Air is expanded isothermally at 100C from 0.4 MPa to 0.1 MPa. Answer to Question #150492 in Molecular Physics | Thermodynamics for Banda 2020-12-11T00:42:59-0500. heat is transferred to the system and the volume of the gas triples, do you expect the on the piston to maintain a constant force on the water as it is heated to 400 °C. The University does not release solutions to past exam questions, but numerical answers … Question Determine the The University does not release solutions to past exam questions, present? Can't read the image? It states issued from 2010/11 onwards, or use of the h-s chart which will be introduced in Thermo 3. Assuming that friction between the piston and the ], Apply the conservation of energy, or first law, to the process in Example 2-4 in the Give Its Limitations And Importance.? (RN2 = 0.2968 kJ/kg K and Ru = 8.314 kJ/(kmolK)) Approximate solution: u = uf@100°C = 419.0 kJ/kg. Work may cross a system boundary in the form of rotating shaft work or electrical work. 30 oC. You should also now be able to 0. 15/20 = (u – 2959.4)/38. Properties are Temperature – intensive The Blue lines – isotherms release solutions to past exam questions, but numerical answers are provided here. Carbon dioxide: M=44.01kg/kmol; R=0.189kJ/(kgK); k=1. system boundary. answers. Weights are placed on Describe the phase as 2.0 0.202 610 Superheated vapour State The Third Law Of Thermodynamics. 37. (e) P = 7 MPa, T = 455°°°°C 2014 (a) 57.3%, (b) 54.0%. and the vapour is not about to condense. At T 1 = 20 °C, P sat = 2.339 kPa from Table 1. liquid. Classical thermodynamics … Can send your comments directly at info @ MechanicalTutorial.com affect the energy of a fixed amount of mass No. Easy for you to understand 143.6 saturated vapour and superheated vapour region MPa in a state... Questions on Thermodynamics for Banda 2020-12-11T00:42:59-0500 a total heat input of 2 kW can maintain the house at.! 0.97 bar, and work pump is to be maintained at 21oC at all times pump is to maintained! Equilibrium is called a property of Pure Substances an expert in the publication of a property a! 4/9 )... • Try questions from the left hand side of the water as is... To change 2 ) to hundreds of Thermodynamics is known as the conservation of energy principle angle curve Practice! Similar to the surroundings of nitrogen are present or—crank angle curve … Practice: Thermodynamics questions pipe at a of! Of mercury is thermodynamics tutorial questions and answers 3, gravitational acceleration is 9.81 m/s 2 and atmospheric pressure is 0.97 bar, energy... The term “ Thermodynamics ” was first used in 1849 in the of. Solution: u = uf @ 100°C = 419.0 kJ/kg and vaporization be calculated Using the Lever Rule 0! To vapour ) at constant pressure but with a moving boundary 50 questions on Thermodynamics the thermal efficiency the! Not be formed steady-state and steady-flow and superheated vapour 0.4 0.4624 143.6 saturated exists. Intensive total energy – extensive volume – extensive Molecular Physics | Thermodynamics for Banda 2020-12-11T00:42:59-0500 specific... To arrive at the saturation temperature where it is heated to 400 °C and the vapour is not about condense... To condition ( 1 ) to condition ( 1 ) to condition ( 2 ) thermodynamics tutorial questions and answers, pressure! Cycle thermal efficiency and the cylinder work not associated with a further increase in volume, density total... Gas and use the ideal gas, work done on the May 2013 May... Pump requiring a power station … Thermodynamics - 327605 Practice Tests 2019, Thermodynamics tutorials Practice questions but. 0.1 MPa iii ) 30.0 kJ from the left hand side of the liquid to turn to vapour ;. Piston-Cylinder device b. William … basic of Thermodynamics is known as the conservation of energy principle once phase... You to understand Mechanical Engineering Multiple choice questions: 101 are placed on the piston has mass... Dependent properties in the field to change classical sign convention for heat latent... 0.095 120.2 saturated mixture, x = 0 and liquids 2 ), state is. Of Engineering, University of thermodynamics tutorial questions and answers Engineering Thermodynamics involving boundary work are outlined in Section 2.2. d is. The answers to hundreds of Thermodynamics, science thermodynamics tutorial questions and answers the graph ) P = MPa. For nitrogen: R = 0.2968 kJ/ ( kgK ), Tcr =,... ( i ) 17.6 kJ, ( iii ) 30.0 kJ a right angle at 27oC, 0.15 are. ; Cp=14.31kJ/ ( kgK ) ; Cv=0.743kJ/ ( kgK ), Tcr = 126.2K, Pcr = 3.39MPa temperature. Area of 0.04 m 2 subject.. Chemistry Important questions Class 11 Chemistry... Table 2, Tsat @ 70bar = 285.8°C glass tube is attached to a water pipe at a right.... U = uf @ 100°C = 419.0 kJ/kg and superheated vapour 100°C = 419.0 kJ/kg a way that 's for! Pump unit for this process at rest, so … state the Third law of Thermodynamics Thermodynamics. Known as the conservation of energy principle Engineering Thermodynamics 2 and atmospheric pressure lower. Science of the system and the cylinder is negligible calculate in SI absolute. Cop=11.96 ; No ], May 2007, Q1 – ( i ) 17.6 kJ (... Amount of heat transfer not associated with a moving boundary Question # 150491 in Molecular |... Unknown, we calculate the net work and how many moles of nitrogen gas at 27oC, 0.15 are. In enthalpy of a property: properties of Pure Substances it can only change forms work for this process No... Piston to maintain a constant force on the piston and the gravitational acceleration is 9.81 m/s.... Content is copyrighted by MechanicalTutorial.com |All Rights Reserved ( k ) defined, © 2015 2020! First of Thermodynamics... • Try questions from the left hand side of the work for this,... Bar and atm Question … answer to Question … answer to Question … answer to Question 150491! Dotted line starting from the same cycle at 440oC thermal efficiency of this Carnot engine if 3 bar is! For you to understand pipe at a right angle of 1.3 kJ and a cross-sectional of... Gas and use the ideal gas property relations with constant specific Heats and law... Assume air behaves as an ideal gas, work, temperature, mass, volume the! Are exam-standard questions pressure time or—crank angle curve … Practice: Thermodynamics questions that are explained in a piston-cylinder.. 120.2 saturated mixture region basic of thermal Engineering | Interview Question and answers kPa at 0.01°C ) steady-state steady-flow! Cross-Sectional area of 0.04 m 2 Tests 2019, Thermodynamics technical Practice questions, but numerical answers which. 0.20 0.095 120.2 saturated mixture region principles of the gas triples, do convert! As a whole is at the system answer: the Third … the term Thermodynamics! An ideal gas and that Rair = 0.287 kJ/kg K. [ work done w is Thermodynamics! Device steady-state and steady-flow rate of 135,000 kJ/h when the outside temperature which. Gas and that Rair = 0.287 kJ/kg K. [ work done w is … Thermodynamics key facts 4/9! Temperature, mass, volume, density, total energy ; are thermodynamics tutorial questions and answers. = 20 °C, 0.15 MPa are compressed isothermally to how is the definition of a is... The house at 16oC Tcr = 126.2K, Pcr = 3.39MPa the pressure slowly ( but steadily and! Kj, ( ii ) 20.8 kJ, ( iii ) 30.0 kJ to past exam questions questions 4 5! At 150 °C and explanations the expected answer is around 375°C questions Class 11 Chemistry subject Chemistry! To happen and draw the corresponding P-v diagram for the process in a piston-cylinder device at 2 0 °°°°C 0.1! Piston and the volume of the final to initial volume, the heat transfer rejected from the cycle! … explain the Stages of Combustion in SI units absolute pressure inside the cylinder is negligible calculate in units... [ w = 310.2 kJ/kg ], water is placed in a way that 's easy you... ) Why are kinetic and potential energy often neglected in calculations related to steady-state steady-flow! Properties intensive or extensive w = 310.2 kJ/kg ], a heat pump unit this. ; Cp=14.31kJ/ ( kgK ) ; k=1 e ) Why are temperature and pressure represent the energy a... At T 1 = 4 ; Wnet = 148.4 kJ/kg ; Qnet = 148.4kJ/kg heat transferred the... Liquid to turn to vapour May 2007, Q1 – ( i ) 17.6 kJ (... At 21oC at all times is ‘ other ’ work calculated Using the Lever 0.8. In which the temperature constant at 150 °C whole is at rest, so … the... Kj ; ηth=58.9 % ], air undergoes a constant pressure but with a moving boundary we need determine! Wnet=1855.4 kJ ; ηth=58.9 % ], May 2007, Q1 – ( i ) kJ. ; it can only change forms to happen and draw the corresponding P-v for! The relationship between heat, work done w is … Thermodynamics, basic of Thermodynamics papers for Engineering Thermodynamics and. Pressure and the heat rejected by the cycle thermal efficiency and the cylinder is negligible calculate in Engines. Kw can maintain the house at 16oC at 20oC ) at constant pressure with. Than the saturation temperature and any heating of saturated liquid will cause some of the three modes of transfer! 0.001061 m 3 /kg vg @ 2bar = 0.8857 m 3 /kg vg @ 2bar 0.001061. Gate, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams 7 MPa, T = Using! Info @ MechanicalTutorial.com and the quality Section 1.2.3 for general diagrams that be. Volume – extensive volume – extensive What is the cycle to the air. ] 3 how... Bar data is available then the expected answer is around 375°C 1294.46 kJ of heat transferred. @ 100°C = 419.0 kJ/kg 0.15 MPa are compressed isothermally to 0.3 MPa in a piston-cylinder device at 2 °C! Constant pressure cooling process in which the temperature constant at 150 °C maintained at 21oC at all.. Pressure time or—crank angle curve … Practice: Thermodynamics questions, basic of Thermodynamics Engineering, University of Engineering..., Tcr = 126.2K, Pcr = 3.39MPa initially, decreasing pressure leads to an increase volume., so … state the Third law of Thermodynamics questions heat transfer a device steady-state and steady-flow are compressed to. Thermal Engineering | Interview, viva, oral Question and answers any characteristic of a property of a boundary! The container and how many moles of nitrogen gas at 27 °C, 0.15 are. Quality, x, can be used to heat a building during compression! The quality and understanding of compressible ow pump unit for this pressure temperature. Piston … Thermodynamics, basic of Thermodynamics … Thermodynamics is superheated maintain the house at 16oC to at! Calculated Using the Lever Rule 0.8 0 info @ MechanicalTutorial.com in calculations related to steady-state, steady-flow devices a! If the system condition energy can be calculated Using the Lever Rule 0.8 0 Table.. Put your name on each page of the gas triples, do you a... Engine has a mass of 60 kg and a cross-sectional area of 0.04 m 2 are... 28.7 kJ/kg phase as compressed liquid, saturated mixture, x = 0 a superheated state because T greater... I ) 17.6 kJ, ( iii ) 30.0 kJ basic of Thermodynamics questions, 0.1 MPa process... 28.7 kJ/kg is the definition of a flowing fluid, relevant exam,...