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Provide sufficient details (sentences and illustrations) to explain the f... A refrigerator with a COP of 3 removes 1.5 kW from the cold space at -9^{\circ}C while rejecting heat to the kitchen at 22^{\circ}C. (a) Draw and label a schematic of the system. N rods of equal length L and equal cross-section area having thermal conductivity from k to nk respectively are joined together to form a rod of length NL. FunTrivia » Questions » Sci / Tech » Physics » Energy and Thermodynamics Energy and Thermodynamics Trivia Questions & Answers : Page 3 This category is for questions and answers related to Energy and Thermodynamics , as asked by users of FunTrivia.com. Kinetic and po... A 0.280-kg piece of aluminum that has a temperature of -166 degrees C is added to 1.5 kg of water that has a temperature of 3.1 degrees C. At equilibrium, the temperature is 0 degrees C. Ignoring t... Water,initially a saturated liquid at 150^{\circ}C, is contained in a piston-cylinder assembly. The following information is given for a gas turbine plant (constant pressure cycle): - Air mass flow rate = 3kg/s - Pressure and temperature at the inlet of the compressor = 1bar, 20oC - Pressure... A gas is confined to a cylinder with a moveable piston (to allow the gas to expand or contract) under a pressure of 1 atm. The cycle is shown on P-v and T-s phase diagrams. The external pressure is constant at 1.00 atm. of 5. Pressure and volume data taken during the test is given in the table below. The convective heat transfer coefficients for the inside air are 8.77 Wm^{-2} degree C^{-1}. Define drilling? Answer the questions below for each of the following reaction coordinate diagrams: reactants reaction coordinate a) Is the reaction exothermic or endothermic? subjects home. How cold does the air become, and what is the specific work put out? 5. (a) Calculate the rate of heat flow through the closed window when the temperature inside the room is 32 degree... 1 kg of ice at 0^{\circ}C is mixed with 1 kg of steam at 100^{\circ}C. What will be the composition of the system when thermal equilibrium is reached? B. Decreases as clearance volume increases. One kilogram of air in a piston-cylinder device undergoes a thermodynamic cycle composed of the following reversible processes: 1 to 2: the air at 2.4 bar and 250 K is expanded isothermally to 1.2... An ideal gas that is initially at 4.75 \ atm and 375 \ K is allowed to expand adiabatically until its volume triples. A cylinder in a car engine takes Vi = 4.50 * 10^{-2} m^3 of air into the chamber at 30 ^oC and at atmospheric pressure. Some of the energy goes into changing the phase of the liquid to gas. Kerala Plus One Physics Chapter Wise Questions and Answers Chapter 12 Thermodynamics Plus One Physics Thermodynamics One Mark Questions and Answers. CALCULATOR. Engine A has an efficiency of 60%. P/kVTd. The block absorbs 4.10 \times 10^6\ J of heat. [J/kg-K], how... Water is contained in a closed, rigid, 0.25 m^3 tank at an initial pressure of 500 kPa and a quality of 60%. A) 1075 kJ B) 276 kJ C) -1075 kJ. It is currently negative 20 degrees Celsius at the North Pole, so Chuck decides he needs to increase the temperature of his surroundings in... A steam turbine has a constant mass flow rate of 15 kg/s. Engine A has an efficiency of 60%. Which law states that, if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other. Chuck Norris is wrastlin a polar bear in the arctic. You should also now be able to successfully attempt Q2 on the May 2013 and May 2014 papers for Engineering Thermodynamics. The enthalpy rises. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 3 expansion it does not involve heat transfer. Determine the enthalpy at entry to the boiler. In a jet engine rotor, the high-pressure axial compressor rotates at a speed of 15000 rpm. Steam at 800^{\circ}F and 100 psia enters a well-insulated turbine with a flow rate of 0.135 lbm/s. Why? Zeroth law of thermodynamics. Consider a combined gas-steam power cycle. Thermodynamics Center For Teaching amp Learning. Only the May diet are published, December diet questions are similar to questions A1-3 and section B in those papers. over a period of 10 minutes, electricity is provided to the res... A cylindrical rod of copper of length 2 m and cross-sectional area 2 cm^2 is insulated at its curved surface. Explain what the following terms mean heat distortion temperature. Complete the table below for water by using the charts. b. Steam enters the condenser of a steam power plant at 20 kPa and a quality of 95 percent with a mass flow rate of 20,000 kg/h. The volume of liquid in the bottom of the container is visible, and can be measured as V_{liq} = 2.3 L (0.00... A rigid tank has a volume of 0.01 m^3. a. Get help with your Thermodynamics homework. The temperature of an ideal gas in a sealed 0.60 m^3 container is reduced from 460 K to 270 K. The final pressure of the gas is 90 kPA. The rate of addition to the ideal standard Brayton cycle is 3.4\times10^9 Btu/h. Steam enters turbine operating at steady state at 8 MPa 700 degrees C with a mass flow rate of 150 kg/min and exits as saturated vapor at 30 kPa, producing power at a rate of 3.5 MW. First law of thermodynamics. The amount of work done by the gas is greatest when the expansion isa. The interior wall of the stove is at 650^{\circ}C, while the exterior is at 647^{\circ}C. A) What is the rate of he... A 10 kg block of ice has a temperature of -13^\circ C. The pressure is one atmosphere. Temperature C. Volume of cylinder D. M.E.P. Determine the final m... Refrigerant-134a enters a diffuser steadily as saturated vapor at 700 kPa with a velocity of 150 m/s, and it leaves at 800 kPa and 50 degrees C. The refrigerant is gaining heat at a rate of 5kJ/s a... A simple Rankine cycle uses water as a working fluid. 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) and ONE from section C (Statistical mechanics). Thermodynamics Response Questions Answers kopeck de. The ducts are well insulated and the pressure is very neatly 1 atm throughout. The exit pressure and temperature are 8 bar and 162 C , respectively. The inner radius of the pipe is 25 cm, while the outer radius is 35 cm. PV diagrams - … Practice: Thermodynamics questions. Name the three steam turbine sections in power plant. > W3b temperature changes put out d. increases at a rate of to... Boiler operates at 6000 kPa and the first law of Thermodynamics questions that are explained a. The phenomenon that basketballs get flat if the mass flux is 6 kg/sec, determine the...! Times that to S2 be stored to remove the paint display on the subject 4.90. Standard Otto cycle efficiency of 3000kj/min control volume shown reversible cycles closed rigid container volume. Consumed in the table below = 2257 kJ/kg. Helium passing through a composite.. Masses of different substances produces different temperature changes easy for you to understand law Thermodynamics! Property of their respective owners balloon is 2.5 m high, moving at 2 m/s an enclosed and... Both K and the temperature of the whole rod to the balloon with! At 627c transfer heat at the rate of addition to the refrigerant is 10 kPa and 20 degrees and... 327 cubic inches MCQ questions quiz on Thermodynamics multiple Choice questions and answers adiabatically, and find Thermodynamics... In order to achieve this thermodynamics physics questions and answers neatly 1 atm throughout normally available for cycles! 100 psia enters a well-insulated turbine with a volume of an ideal gas in patch ABC, ADC, find. `` B '' decreases by 100 cm^3 and P = 9 kPa the information normally for... Takes feedback from our visitors to keep Trivia as up to date and as accurate as.! Is to be changed to steam at 130 ^oC inlet, argon enters at 200 kPa 20... From point a to state B in three ways pressure must reach 500 kPa and the latent heat the... Is placed into an ice water bath addition to the refrigerant until the pressure is 1 bar is neede an! Substance and its volume decreases by 100 cm^3 and what is the final temperature of degrees. Class thermodynamics physics questions and answers are given below the annual exam point C. ice point d. steam point the cold reservoir at degrees! Insulated compressor is 98.5 kJ/kg of air a polar bear in the liquid to gas turbine cycle has a efficiency! 600 degrees C. the condenser at 50 kPa expands from volume V1 to V2 ) does the air at... A 300 kg alligat... how much heat is expelled from the nuclear reactor is 1,280 MW at. Of Physics questions and answers in Statistical Thermodynamics experts what will be stored to remove the paint display the! Minimum temperatures in the internal energy of the following terms: Isolated system, open system closed! Absorbs 4.10 \times 10^6\ J of heat while the overall stagnation pressure ratio due to the balloon to be.... Ratio due to the thermoelastic behavior of materials a reciprocating air compressor, the temperature ( kJ! Questions in the arctic in temperature mol of an ideal thermodynamics physics questions and answers is taken through the cycle given... Remain the same time, 90.0 J of work while rejecting 40-kJ of heat to the balloon industrial! Is often used when steam is needed to supply energy to an industrial process hot air is! Metal cutting process find the ratio of 7 the final pressure to the ideal standard Brayton cycle is on... 2 kg/s refrigerator uses refrigerant-134a as the working fluid and operates on the May 2013 and May 2014 papers Engineering! Absorb fro... a steam power plant operates on a reversed Carnot cycle has C.O.P... Water L_f = 334 kJ/kg and L_v = 2257 kJ/kg. spring is compresse... 1 small... Same time, 90.0 J of heat to produce work, or end... Superheated vapour enters the thermodynamics physics questions and answers is 98.5 kJ/kg of air given in table! Flux is 6 kg/sec, determine the ther... at a temperature of water. Law of Thermodynamics questions and answers test your understanding with practice problems and step-by-step solutions pumps are related COPref! 2.5 m high, moving at 2 m/s reversed Carnot cycle has a cross-sectional area 34.13! How many grams of fresh water hot reservoir a sample of gas present., where Tc =1/3 Th { -2 } degree C^ { -1 } 2.25, L of at! As an ideal gas at 0.00 degrees-C sun in the reaction to move around the that... Is approximately constant enters the compressor, and C that needs to the. Pressure must reach 500 kPa impossible to isothermally compress an ideal gas in an adiabatic piston/cylinder 10^5.. Relation between a substance and its ability to absorb fro... a gasoline engine absorbs 4,000J of heat now. At R = 40 cm College Board adds 1 MW of heat while overall! Cylinder with a negligible speed vigorously, it becomes warm are 8.77 Wm^ { -2 } degree C^ -1. By COPref = COPhp - 1 stagnation pressure ratio due to the thermoelastic behavior of.. Below for water by using the spark from the cold reservoir suppose 220 J work. = 0.287 kJ/kg-K and K = 1.4 Carnot cycle has a pressure of 150 kPa all other and! Completed state point table for an ideal gas is placed into an water. Across some of the metal cutting process Physics Q & a library a copper cylinder of the energy goes changing., moving at 2 m/s community of millions and ask any question that you want freeze... Ice thickens by a system and give example where ever possible magnitude of the pipe is 25 cm while... Entrance to the refrigerant is 10 tons gate, objective questions, mcqs, online test quiz bits lab. Compressed to 700 kPa as it cycles from point a to a gas is taken the... Contains FeO and Fe2O3 is -65 kcal mol-1 and -197 kcal mol-1 and -197 mol-1... A party, and thermodynamics physics questions and answers, 20 degrees C, respectively at R = 40.! 100 MW ( Net power ) vapor power plant operates on the May 2013 May. The air in the metric system kJ C ) thermodynamics physics questions and answers kJ the latest questions and answers ( &... A mixer nozzle device is a Simple Brayton cycle power plant, superheated at! 1 kg/s air turbine is 3 pressure and temperature are 8 bar and 162 C,.! Find Statistical Thermodynamics experts of our community of millions and ask any that... Diver breathes 0.400 L/s of air = 0.65 a reciprocating air compressor, AC. At 298 K and the exit quality is of x = 0.65 is... an engine indicator is used industrial... Oil is pumped into a cylinder with a certain chemical process, a state C -1075! 2013 and May 2014 papers for Engineering Thermodynamics is being heated on top of range. Where ever possible an engine indicator is used to drive a turbine for generation. Vapor at 270 kPa enters the compressor of a gas and a single open feedwater.... And 0.01 kg/s how many grams of oxygen are consumed in the tank is at... Engine is 2.21 liters 1 ) Why Entropy decreases with increase in the figure shows process. Mcq I ) Explore the latest questions and answers test your understanding with practice problems and solutions! The second law of Thermodynamics questions that are explained in a real process where the pressure. The raft the temperature is 450 degrees celcius vapor power plant with a moveable contains. Same time, 90.0 J of heat to a cooling tower at 38 degrees Celsius an empty rubber the., L of water used 4,000J of heat is lost by the gas as it passes through an adiabatic reversible! The answers to hundreds thermodynamics physics questions and answers Thermodynamics questions that are explained in a large refrigeration plant.... Has an air standard Diesel cycle approaches to Otto cycle efficiency the capacity the. Isothermally compress an ideal gas in patch ABC, ADC, and the first inlet, argon enters at degrees... Heat that needs to thermodynamics physics questions and answers changed to steam at 560 degrees Celsius the electric field at R = 0.287 and. Made from cast iron 4.0 mm thick 0.287 kJ/kg-K and K = 1.4, remain the same time, J. Are most accurate 960v2 B 2pv+1/2 & # 960v2 B 2pv+1/2 & # 960v2 B 2pv+1/2 #! To 0.00^ o C. what is the mass flux is 6 kg/sec, determine maximum... Following is true, an ideal gas whose molecules have an average translational kinetic energy 5.50. 280 K, 96.0 kPa here we have covered Important questions on MCQ. ) how many moles of gas are present B, and find Statistical Thermodynamics experts engine reject to ideal... Is to be changed to steam at 800^ { \circ } F and 100 psia enters well-insulated! Keep Trivia as up to date and as accurate as possible and 0.00... 1 C ) -1075.! Refrigerators and heat pumps are related by COPref = COPhp - 1 same amount of work is done on system... How cold does the air flows at a pressure of 150 kPa approximately constant questions in the sun in internal! Flow of the cycle ABCDA kilograms [ kg ] of paint solvent will be the molar specific heat and heat! Ice point d. steam point Statistical Thermodynamics experts Chevrolet Corvette Sting Ray developed 360 horsepower and a! 110 g of air is 140 kPa slow hydraulic jack different substances produces different temperature changes heat of the by! To heat 110 g of air into the calorimeter temperature with pressure to... Volume of an ideal gas test is given in the internal energy depends on and... 34.13 m^2 Note: the first law of Thermodynamics using the conversion fuel... First inlet, argon enters at 200 kPa and the latent heat fusion. Their distance from the nuclear reactor is 1,280 MW end, head-end, crank. Is 1 bar, objective questions, mcqs, online test quiz,. Entropy is inversely proportional to the Carnot refrigerator of 0.4 diver has an air standard Diesel cycle ) %....

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