An imaginary engine receives heat and does work on a slowly moving piston at such rates that the cycle of operation of 1 kg of working fluid can be represented as a circle 10 cm in diameter on a p-v diagram on which 1 cm = 300 kPa and 1 cm = 0.l m³/kg. (a) How much work is done by each kg of working fluid for each cycle of operation? (b) The thermal efficiency of an engine is defined as the ratio of work done and heat input in a cycle. If the heat rejected by the engine in a cycle is 1000 kJ per kg of working fluid, what would be its thermal

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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An imaginary engine receives heat and does work on a slowly moving
piston at such rates that the cycle of operation of 1 kg of working fluid
can be represented as a circle 10 cm in diameter on a p-v diagram on
which 1 cm = 300 kPa and 1 cm = 0.1 m³/kg.
(a) How much work is done by each kg of working fluid for each cycle of
operation?
(b) The thermal efficiency of an engine is defined as the ratio of work
done and heat input in a cycle. If the heat rejected by the engine in
cycle is 1000 kJ per kg of working fluid, what would be its thermal
efficiency?
Transcribed Image Text:An imaginary engine receives heat and does work on a slowly moving piston at such rates that the cycle of operation of 1 kg of working fluid can be represented as a circle 10 cm in diameter on a p-v diagram on which 1 cm = 300 kPa and 1 cm = 0.1 m³/kg. (a) How much work is done by each kg of working fluid for each cycle of operation? (b) The thermal efficiency of an engine is defined as the ratio of work done and heat input in a cycle. If the heat rejected by the engine in cycle is 1000 kJ per kg of working fluid, what would be its thermal efficiency?
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