Select the statement(s) that is (are) belong to the Carnot Principle_________ A.The efficiency of an irreversible heat engine is always greater than the efficient of a reversible one operating between the same two reservoirs. B.The efficiency of an irreversible heat engine is always less than the efficient of a reversible one operating between the same two reservoirs. C.The efficiencies of all reversible heat engines operating between the same two reservoirs are not the same. D.The efficiencies of all reversible heat engines operating between the same two reservoirs are the same. Select the statement(s) that is (are) belong to the Carnot Principle_A. The efficiency of an irreversible heat engine is always greater than the efficient of a reversible one operating between the same two reservoirs.OB. The efficiency of an irreversible heat engine is always less than the efficient of a reversible one operating between the same two reservoirs.OC. The efficiencies of all reversible heat engines operating between the same two reservoirs are not the same.D. The efficiencies of all reversible heat engines operating between the same two reservoirs are the same.

As per carnot theoremthe efficiency of carnot reversible cycle ηcarrnot=1-TLTH

Answered: Select the statement(s) that is (are)…

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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All reversible heat engines operating between the same two reservoirs have the same efficiency (the second Carnot principle).
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle starting at the beginning of the isothermal expansion are, V1 = 10.10 li, V2 = 14.53 li, V3 = 226.54 li, and V4 = 157.73 li. The cycle receives 21.5 kJ of heat. Determine (a) the net work, (b) the mean effective pressure, and (c) the thermal efficiency of the cycle.
Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system located where the local g = 32 ft/s2. For the liquid, p1 = 20 psia, p2 = 80 psia, ρ1= 1.6 lbm/ft3, ρ2 = 0.32 lbm/ft3, v1 = 400 ft/s, v2 = 600 ft/s, u1 = 130 BTU/lbm, u2 = 130 BTU/lbm. During passage through the system, the fluid rejects 50 BTU/s as heat and rises 175 ft in elevation. What is the change in kinetic energy in BTU? Select one: a. 23.56 b. 29.34 c. 34.56 d. 39.95
Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system located where the local g = 32 ft/s2. For the liquid, p1 = 20 psia, p2 = 80 psia, ρ1= 1.6 lbm/ft3, ρ2 = 0.32 lbm/ft3, v1 = 400 ft/s, v2 = 600 ft/s, u1 = 130 BTU/lbm, u2 = 130 BTU/lbm. During passage through the system, the fluid rejects 50 BTU/s as heat and rises 175 ft in elevation. During passage through the system, the fluid rejects 50 Btu/s as heat and rises 175 ft in elevation. Determine the work in the system, in BTU. Select one: a. – 675.2 b. – 781.8 c. 892.6 d. 987.4
3. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion ,are V1 = 10.10, V2 = 14.53, V3 = 226.54 ,and V4 = 157.73L. The cycle receives 21.1 KJ of heat. Determine a) the work and b) the mean effective pressure.
2. A power cycle receives energy QH by heat transfer from a hot reservoir at TH = 1200 R and rejects energy QC by heat transfer to a cold reservoir at TC = 400 R. For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. (a) QH = 900 Btu, Wcycle = 450 Btu (b) QH = 900 Btu, QC = 300 Btu (c) Wcycle = 600 Btu, QC = 400 Btu (d) Eff. = 70%
Show that all reversible engines operating between the same two reservoirs have the same efficiency
The efficiency of an irreversible heat engine is always less than the efficiency of a reversible one operating between the same two reservoirs?
Second-law efficiency is a measure of the performance of a device relative to its performance under reversible conditions.
Think of at least five examples EACH of a REVERSIBLE and IRREVERSIBLE process that is evident in everyday life. Provide a short Explanation of each examples.
How to define reversible process and irreversible processes.
Answer the following true or false. Explain. (a) A process that violates the second law of thermodynamics violates the first law of thermidynamics. (b) When a net amount of work is done on a closed system undergoing an internally reversible process, a net heat transfer of energy from the system also occurs. (c) One corollary of the second law of thermodynamics states that the change in entropy of a closed system must be greater than zero or equal to zero. (d) A closed system can experience an increase in entropy only when irreversibilities are present within the system during the process. (e) Entropy is produced in every internally reversible process of a closed system. (f) In an adiabatic and internally reversible process of a closed system, the entropy remains constant. (g) The energy of an isolated system must remain constant, but the entropy can only decrease.

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	A.	The efficiency of an irreversible heat engine is always greater than the efficient of a reversible one operating between the same two reservoirs.
	B.	The efficiency of an irreversible heat engine is always less than the efficient of a reversible one operating between the same two reservoirs.
	C.	The efficiencies of all reversible heat engines operating between the same two reservoirs are not the same.
	D.	The efficiencies of all reversible heat engines operating between the same two reservoirs are the same.