Question

In: Mechanical Engineering

1. True or false. The mass of a closed system cannot change. 2. True or false....

1. True or false. The mass of a closed system cannot change.
2. True or false. Fahrenheit scale cannot be used in thermodynamics relations.
3. True or false. An extensive property can be a function of time and location.
4. True or false. If a system is at steady state, then the density is uniform throughout the system.
5. True or false. All modes of heat transfer between two bodies must occur when the two bodies are in contact.
6. True or false. The volume of a closed system cannot change.
7. True or false. Fahrenheit scale is an absolute temperature scale in English units.
8. True or false. A system is at steady state if no more than one of its properties changes with time.

Solutions

Expert Solution

1.TRUE

The system in which mass cannot transfer from system to surrounding is called closed system.

2. TRUE

All the thermodynamic relation is based on absolute zero temperature and all relation is based on the Kelvin scale

3. FALSE

The extensive property is a function of mass.

4.FALSE

In the steady state, the system state is constant with respect to time.

5.FALSE

In radiation heat transfer, there is no need to contact between two bodies.

6.FALSE

The volume of the closed system can change but mass cannot change.

7.FALSE

Kelvin scale is an absolute temperature scale.

8.FALSE

A system is at steady state if "no any" of its properties change with time.


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