Member Since: May 18, 2013
Answers: 2
Last Update: May 22, 2013
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Explain the Change of Phase - Constant Pressure Heat Addition (link)
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The point C is the saturated vapor state, and line BC is a constant-temperature procedure in which the change of phase from liquid to vapor takes place. The line CD symbolizes the procedure in which the steam is super-heated at constant pressure. The temperature and volume both rise during the procedure.
Now assume the process occur at a constant pressure of 100 psia, starting from a preliminary temperature of 60°F. The point E symbolizes the first state, the specific volume become slightly less than 14.7 psia and 60°F. The vaporization now starts at point F, where the temperature is 327.8°F. The point G is a saturated-vapor state, and line GH is the stable pressure procedure in which the steam is superheated.
Refer given link to know more about this topic:-
http://www.expertsmind.com/topic/change-of-phase/constant-pressure-heat-addition-96377.aspx
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What are wait-for-graphs?? (link)
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The wait-for-graph is a directed graph and consists of nodes and directed arcs; the nodes of the graph are active transactions. An arc of the graph is inserted among two nodes if there is a data-item is needed by the node at the tail of the arc that is being held by the node at the head of the arc.
Algorithm to construct wait-for-graph is as follows:
1. For every transaction Ti active at the time of deadlock detection, make a node labeled Ti in the wait-for-graph.
2. For every case, if there is a transaction Ti, waiting for a data-item that is at present allocated and held by transaction Tj, then there is a directed arc from the node for transaction Ti, to the node for transaction Tj.
This answer is imcomplete if you want to read more about this answer than go thorugh this link:-
http://www.expertsmind.com/questions/what-are-wait-for-graphs-30161788.aspx
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