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. |
A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle is
(1) ρoVo
(2) 2ρoVo
(3) ρoVo/2
(4)zero
If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cyclic process, then
(1) W=0
(2) Q=W=0
(3) E=0
(4) Q=0
In a cyclic process, the internal energy of the gas:
1. | Increases | 2. | Decreases |
3. | Remains constant | 4. | Becomes zero |
A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is -
(1) 20 J
(2) – 20 J
(3) 400 J
(4) – 374 J