A power cycle operating between two reservoirs receives energy \( Q_H \) by heat transfer from a hot reservoir at \( T_H = 2000 \, \text{K} \) and rejects energy \( Q_C \) by heat transfer to a cold reservoir at \( T_C = 400 \, \text{K} \). For the cases below you will be asked to determine the cycle \( n \) and whether the cycle operates Reversibly, Irreversibly, or is Impossible.**Assume:**\( n = n_{Carnot} \) Cycle _________ \( n < n_{Carnot} \) Cycle _________ \( n > n_{Carnot} \) Cycle _________ **1.** The maximum thermal efficiency \( n_{Carnot} \) for the cycle is equal to a. 0.2 b. 0.8 c. 1.0 d. none of the above.**2.** If \( Q_H = 1100 \, \text{kJ} \) and the \( W_{cycle} = 900 \, \text{kJ} \) then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above.**3.** If \( Q_H = 1000 \, \text{kJ} \) and \( Q_C = 200 \, \text{kJ} \) then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above.**4.** If \( W_{cycle} = 1400 \, \text{kJ} \) and \( Q_C = 600 \, \text{kJ} \) then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above.**5.** If \( n = 50\% \) then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above.

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A power cycle operating between two reservoirs receives energy QH by heat transfer from a hot reservoir at TH = 2000 K and rejects energy Qc by heat transfer to a cold reservoir at Tc = 400 K. For the cases below you will be asked to determine the cycle n and whether the cycle operates Reversibly, Irreversibility, or is Impossible. Assume: Сycle Сycle Сycle n = nCarnot п< псarnot п > nCarnot 1. The maximum thermal efficiency nCarnot for the cycle is equal to а. 0.2 b. 0.8 с. 1.0 d. none of the above. 2. If QH = 1100 kJ and the Weycle = 900 kJ then the cycle is Reversible b. Irreversible c. Impossible d. none of the above. а. 3. If QH = 1000 kJ and Qc = 200 kJ then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above. 4. If Wcycle 1400 kJ and Qc= 600 kJ then the cycle is

A power cycle operating between two reservoirs receives energy QH by heat transfer from a hot reservoir at TH = 2000 K and rejects energy Qc by heat transfer to a cold reservoir at Tc = 400 K. For the cases below you will be asked to determine the cycle n and whether the cycle operates Reversibly, Irreversibility, or is Impossible. Assume: Сycle Сycle Сycle n = nCarnot п< псarnot п > nCarnot 1. The maximum thermal efficiency nCarnot for the cycle is equal to а. 0.2 b. 0.8 с. 1.0 d. none of the above. 2. If QH = 1100 kJ and the Weycle = 900 kJ then the cycle is Reversible b. Irreversible c. Impossible d. none of the above. а. 3. If QH = 1000 kJ and Qc = 200 kJ then the cycle is a. Reversible b. Irreversible c. Impossible d. none of the above. 4. If Wcycle 1400 kJ and Qc= 600 kJ then the cycle is

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

A power cycle operating between two reservoirs receives energy \( Q_H \) by heat transfer from a hot reservoir at \( T_H = 2000 \, \text{K} \) and rejects energy \( Q_C \) by heat transfer to a cold reservoir at \( T_C = 400 \, \text{K} \). For the cases below you will be asked to determine the cycle \( n \) and whether the cycle operates Reversibly, Irreversibly, or is Impossible.

**Assume:**

\( n = n_{Carnot} \) Cycle _________
\( n < n_{Carnot} \) Cycle _________
\( n > n_{Carnot} \) Cycle _________

**1.** The maximum thermal efficiency \( n_{Carnot} \) for the cycle is equal to
a. 0.2
b. 0.8
c. 1.0
d. none of the above.

**2.** If \( Q_H = 1100 \, \text{kJ} \) and the \( W_{cycle} = 900 \, \text{kJ} \) then the cycle is
a. Reversible
b. Irreversible
c. Impossible
d. none of the above.

**3.** If \( Q_H = 1000 \, \text{kJ} \) and \( Q_C = 200 \, \text{kJ} \) then the cycle is
a. Reversible
b. Irreversible
c. Impossible
d. none of the above.

**4.** If \( W_{cycle} = 1400 \, \text{kJ} \) and \( Q_C = 600 \, \text{kJ} \) then the cycle is
a. Reversible
b. Irreversible
c. Impossible
d. none of the above.

**5.** If \( n = 50\% \) then the cycle is
a. Reversible
b. Irreversible
c. Impossible
d. none of the above.

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