For the indicator diagram given below, which of the following is not correct?

                    

1. Cycle II is a heat engine cycle.
2. Net work is done on the gas in cycle I.
3. Work done is positive for cycle I.
4. Work done is positive for cycle II.

Subtopic:  Cyclic Process |
 60%
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An ideal gas with adiabatic exponent y is heated at constant pressure and it absorbs Q heat. What fraction of this heat is used to perform external work?

1.  γ

2.  1γ

3.  1 - 1γ

4.  γ - 1

Subtopic:  First Law of Thermodynamics |
 55%
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Temperature is defined by

1.  First Law of thermodynamics

2.  Second Law of thermodynamics

3.  Third Law of  thermodynamics

4.  Zeroth Law of  thermodynamics

 

Subtopic:  Basic Terms |
 58%
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The P-V diagram for a thermodynamic system is shown in the figure. The work done by the system during the cyclic process ABCA is

 

1.  Zero

2.  90 J

3.  30 J

4.  60 J

Subtopic:  Work Done by a Gas |
 76%
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If W1 is the work done in compressing an ideal gas from a given initial state through a certain volume isothermally and W2 is the work done in compressing the same gas from the same initial state through the same volume adiabatically, then:

1. W1=W2

2. W1<W2

3. W1>W2

4. W1=2W2

Subtopic:  Work Done by a Gas |
 62%
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An ideal gas changes from state 'a' to state 'b' as shown in figure. What is the work done by the gas in the process?

 

1. zero

2. positive

3. negative

4. infinite

Subtopic:  Work Done by a Gas |
 63%
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P-V graph of two gases during adiabatic processes are shown in figure. Plots 1 and 2 should correspond, respectively to :

1. He, O2

2. O2 and He

3. He and Ar

4. O2 and N2

Subtopic:  Types of Processes |
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For an ideal gas V-T curves at constant pressure P1 and P2 are shown in figure. From the figure

1. P1>P2

2. P1<P2

3. P1=P2

4. P1P2

Subtopic:  Ideal Gas Equation |
 78%
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During an experiment and ideal gas is found to obey an additional law \(VP^2 = \text{constant}\). The gas is initially at a temperature \(T\) and volume \(V\). When it expand to a volume \(2V\), the temperature becomes:
1. \(T\)
2. \(2T\)
3. \(\sqrt{2}T\)
4. \(\frac{T}{2}\)
Subtopic:  Types of Processes |
 65%
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A sink, that is, the system where heat is rejected, is essential for the conversion of heat into work. From which law does the above inference follow?
1. Zeroth
2. First
3. Second
4. Third

Subtopic:  Second Law of Thermodynamics |
 58%
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