2. The pV-diagram on the right shows a cycle of a heat engine that uses 0.250 mol of an ideal gas with = 1.49. Process ab is adiabatic. (1 atm = 101.3 kPa) a) What is the thermal efficiency of the engine? b) Compare your answer to part a) to the thermal efficiency of a Carnot engine operating between the same two temperature extremes. p (atm) 1.5 0 0.0020 0.0090 V (m

2. The pV-diagram on the right shows a cycle of a heat engine that uses 0.250 mol of an ideal gas with = 1.49. Process ab is adiabatic. (1 atm = 101.3 kPa) a) What is the thermal efficiency of the engine? b) Compare your answer to part a) to the thermal efficiency of a Carnot engine operating between the same two temperature extremes. p (atm) 1.5 0 0.0020 0.0090 V (m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2. The pV-diagram on the right shows a cycle of a heat engine that uses 0.250 mol of an ideal gas with = 1.49. Process ab is adiabatic. (1 atm = 101.3 kPa) a) What is the thermal efficiency of the engine? b) Compare your answer to part a) to the thermal efficiency of a Carnot engine operating between the same two temperature extremes. p (atm) 1.5 0 0.0020 rail 2022 0.0090 V (m
An ideal gas contained in a piston-and-cylinder device undergoes a thermodynamic cycle made up of three quasi-equilibrium processes. Step 1-2: Adiabatic compression from 330 K and 9.35 atm to 12.58 atm Step 2-3: Isobaric cooling Step 3-1: Isothermal expansion a.) Carefully draw this process in a traditional piston-and-cylinder schematic b.) Sketch the process path for this cycle on a PV Diagram. Put a point on the diagram for each state and label it. Be sure to include and label all the important features for a complete PV diagram for this system.
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SU-1 A heat engine with &=0.400 operates between two heat reservoirs at 250K and 450K. The energy amounts and heat flow diagram for one cycle of operation of the engine is shown to the right. a) What is the change in entropy for the engine for one cycle of operation of the engine? b) Find the change in entropy for the engine surroundings for one cycle of operation of the engine. c) Find the change in entropy for the universe for one cycle of operation of the engine. d) Is this engine real, reversible, or impossible? Explain why using your results from the previous parts. Th-450K 500 200J Engne 300J T-250K
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DEVICE is REFRIGERATION & 12 23 3 4 4 → 1 At 1. AT 2: AT 3 AT 4 : : ADIABATIC COMPRESSION COOL AT CONSTANT PRESSURE P1 = ADIABATIC EXPANSION HEATING AT CONSTANT PRESSURE P2 = P1 = A BAR P2 P3 3.2 BAR ASK: A) B) T2 c) HEAT 74 T1 HEAT CAPACITIE C 4 тн E SPECIFIC HEAT RATIO OF WORKING Y = 1.5 T3 = EXCHANGE S UNDERGOES REVERSE BRAYTON CYCLE -5.15e MABS OF WORKI G SUBSTANCE M = 116g 17.85°C SUBSTANCE cu & Cp iN CELCIUS Q23 IN s/g & Q41 is IDEA
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A diesel electric plant supplies energy by Meralco. During a 24 hour period, the plant consumed 200 gallons of fuel at 28 deg. C and produced 3930 kw-hr. Industrial fuel used is 28 degree API and was purchased at 5.50 per liter at 15.6 deg. C. What should be the cost of fuel to produce 1 kw-hr?