Question

Provide an explanation as well for the following questions.

1 Both energy and entropy can be transferred between a system and surroundings by heat, work, and mass flow

True or False

2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy

		a) causes the turbine’s exit temperature to be lower than if the turbine were reversible.
		b) causes the turbine’s exit temperature to be higher than if the turbine were reversible.
		c) causes the turbine’s exit pressure to be lower than if the turbine were reversible.
		d) causes the turbine’s exit pressure to be higher than if the turbine were reversible.

3. The amount of entropy generation during a process represents the irreversibilities and is process path-dependent.

True or  False

4. An irreversible turbine has a negative change in entropy, which means

		a)The entropy generation across the turbine is negative.
		b) There is heat loss from the turbine to the surrounding.
		c) There is a negative work output from the turbine
		d) All of the above are true

5. Entropy change across a pump used in a certain practical application was found out to have a negative value. Which of the below statement is true?

		a) The entropy generation across the pump is negative.
		b) There is heat loss from the pump to the surrounding.
		c) There is work output from the pump.
		d) All of the above are true.

Answer 1

Answer: 1

False.

Entropy is transferred by heat and mass flow forms while energy is transferred by work also.

i have answered as per HOMEWORKLIB RULES....

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