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WorksheetsIntroduction to Thermodynamics
Total questions: 20
Worksheet time: 2mins
Which of the following systems are applications of thermodynamics?
Car engine
A solar hot water system
An MP4 player
A refrigerator
A TV remote control
The second law of thermodynamics implies that heat flows automatically in the direction of?
decreasing temperature
increasing temperature
decreasing pressure
increasing pressure
Any characteristic of a system is called ___________________.
surroundings
property
mass
path
From the following properties, select one that is not classified as an intensive property?
Momentum
Pressure
Temperature
Density
Specific volume
The weight of a system is an intensive property
True
False
Extensive property per ________ are called specific properties
unit degree
unit time
unit mass
unit volume
A system is a simple compressible in the absence of ___________________ and surface tension effects.
Magnetic
Mechanical
Electrical
Gravitational
Heat transfer
Which of the following device is not suitable for using a control volume (open system) in the thermodynamic analysis of the system?
A refrigerator
Compressed nitrogen in a sealed tank
A section of water pipe with flowing water
A diesel engine
Human body
From the following list, select those that characterize a system, also known as the system's properties.
Pressure
Thermodynamic state
Viscosity
Process
Thermal conductivity
If a substance is assumed incompressible, which of its properties can be considered as constant?
Temperature
Density
Pressure
Energy
Force
Which of the following statement(s) is(are) true?
For a system in a given state, if one property changes value, the state will remain unchanged.
At a given state, all of the properties of a system has fixed values except pressure and temperature.
At a given state, all the properties of a system have fixed values.
A system is able to maintain a given state even if values of multiple properties have changed.
In an equilibrium state, there are no unbalanced potentials.
For the following devices in normal operation, which one can be approximated as steady flow devices?
Turbine
A rigid tank
A centrifugal pump
A heat exchanger
A gas charging device
The specific gravity or relative density is dimensionless.
True
False
Which of the following statement(s) is(are) true?
Properties are considered to be intensive or extensive.
All specific properties are also intensive properties.
Extensive properties per unit mass are called specific properties.
Some specific properties can be extensive properties.
Intensive properties are dependent on mass.
The term uniform flow implies flows with no change with a specific ______________.
location
mass
density
pressure
temperature
Which of the following statement is true?
An isolated system must be a closed system.
A closed system must be an isolated system.
A system cannot be both isolated and closed.
System A is in thermal equilibrium with system B. System B is in thermal equilibrium with system C. We can derive that system A, B, and C are all in thermal equilibrium based on the __________ law of thermodynamics.
third
second
first
zeroth
In steady-flow process, the mass within the control volume _________________.
sometimes increased and sometimes decreased.
increased.
remains the same.
decreased.
For the following systems, which one(s) can be categorized as closed?
A jet engine
A pressure cooker with a pressure vent
A soda can (not opened) in a car trunk
Hot water enclosed in a rigid tank
Besides length and time, which of the following is the primary dimension of the SI metric system?
Velocity
Energy
Mass
Power
Second
