For an adiabatic process, the factor which remains constant is: (all the notations have their usual meaning)
1. \(P^{\gamma-1} {~T}^\gamma \)
2. \(T V^{1-\gamma} \)
3. \(V^{\gamma-1} {~T}^ \gamma \)
4. \(P^{1-\gamma} ~{T}^\gamma\)
Subtopic:  Cyclic Process |
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A thermodynamic system undergoes a cyclic process \(ABCDA\) as shown in Fig. The work done by the system in the cycle is: 
             
1. \( P_0 V_0 \)
2. \( 2 P_0 V_0 \)
3. \( \frac{P_0 V_0}{2} \)
4. zero

Subtopic:  Cyclic Process |
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A thermodynamic system is taken through the cycle \(\mathrm{ABCD}\) as shown in the figure. Heat rejected by the gas during the cycle is: 
     

1. \(2 {PV}\)
2. \(4{PV}\)
3. \(\frac{1}{2}{PV}\)
4. \(PV\)

Subtopic:  Cyclic Process |
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If \(Q\), \(E\), and \(W\) denote respectively the heat added, the change in internal energy, and the work done in a closed cycle process, then:

1. \(W=0\) 2. \(Q=W=0\)
3. \(E=0\) 4. \(Q=0\)
Subtopic:  Cyclic Process |
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