MEGR 3111 R.VRIKKIS CONCEPTUAL TEST QUESTIONS ANSWERED CORRECTLY LATEST
UPDATE 2025
T/F: The specific volume is the reciprocal of the density. - Answers True
T/F: A closed system always contains the same matter; there is no transfer of matter across its
boundary. - Answers True
T/F: A control volume is a special type of closed system that does not interact in any way with
its surroundings. - Answers False
Y/N: In this class, would it be appropriate to use the ideal gas law with a substance with a
reduced temperature
of 1, a reduced pressure of 0.25? - Answers Yes
A process that involves no heat transfer is referred to as:
a. Isothermal
b. Isobaric
c. Isentropic
d. Adiabatic
e. Isenthalpic - Answers d. Adiabatic
In what ways can energy be transferred to a closed system?
a. Internal energy and velocity
b. Internal energy, kinetic energy, and potential energy
c. Heat, work, and mass flow
d. Heat and work
e. None of the above - Answers d. Heat and work
The specific heat ratio, k, of an ideal gas must be:
a. Greater than one
b. Less than one
c. Whether or not it is greater or lesser than one depends on the gas - Answers a. Greater than
one
, Y/N: If you were given the temperature and specific volume of a two-phase liquid-vapor mixture
of water, could
the quality be determined? - Answers Yes
Which device below handles a liquid and requires a work input, usually with negligible heat
transfer and negligible changes in kinetic and potential
energy?
a. Nozzle
b. Turbine
c. Compressor
d. Pump
e. Heat Exchanger - Answers d. Pump
Which device below increases the pressure of a gas usually with negligible changes in kinetic
and potential energy?
a. Nozzle
b. Turbine
c. Compressor
d. Pump
e. Heat exchanger - Answers c. Compressor
Select the correct statements for the operation of a throttling valve with negligible heat transfer
and negligible changes in kinetic and potential energy.
I. Throttling valves produce a pressure drop without involving any work.
II. For an ideal gas, the temperature decreases during a throttling process.
III. Internal energy values at the inlet and exit of a throttling valve are the same.
a. Only I
b. Only II
c. I and II
d. II and III
UPDATE 2025
T/F: The specific volume is the reciprocal of the density. - Answers True
T/F: A closed system always contains the same matter; there is no transfer of matter across its
boundary. - Answers True
T/F: A control volume is a special type of closed system that does not interact in any way with
its surroundings. - Answers False
Y/N: In this class, would it be appropriate to use the ideal gas law with a substance with a
reduced temperature
of 1, a reduced pressure of 0.25? - Answers Yes
A process that involves no heat transfer is referred to as:
a. Isothermal
b. Isobaric
c. Isentropic
d. Adiabatic
e. Isenthalpic - Answers d. Adiabatic
In what ways can energy be transferred to a closed system?
a. Internal energy and velocity
b. Internal energy, kinetic energy, and potential energy
c. Heat, work, and mass flow
d. Heat and work
e. None of the above - Answers d. Heat and work
The specific heat ratio, k, of an ideal gas must be:
a. Greater than one
b. Less than one
c. Whether or not it is greater or lesser than one depends on the gas - Answers a. Greater than
one
, Y/N: If you were given the temperature and specific volume of a two-phase liquid-vapor mixture
of water, could
the quality be determined? - Answers Yes
Which device below handles a liquid and requires a work input, usually with negligible heat
transfer and negligible changes in kinetic and potential
energy?
a. Nozzle
b. Turbine
c. Compressor
d. Pump
e. Heat Exchanger - Answers d. Pump
Which device below increases the pressure of a gas usually with negligible changes in kinetic
and potential energy?
a. Nozzle
b. Turbine
c. Compressor
d. Pump
e. Heat exchanger - Answers c. Compressor
Select the correct statements for the operation of a throttling valve with negligible heat transfer
and negligible changes in kinetic and potential energy.
I. Throttling valves produce a pressure drop without involving any work.
II. For an ideal gas, the temperature decreases during a throttling process.
III. Internal energy values at the inlet and exit of a throttling valve are the same.
a. Only I
b. Only II
c. I and II
d. II and III
