What is defined a region in space chosen for study?  A. Surroundings  B. System  C. Boundary  D. Volume

What is defined a region in space chosen for study?
 A. Surroundings
 B. System
 C. Boundary
 D. Volume
by

1 Answer

Answer :

System
by

Related questions

What is the mass or region outside the system called?  A. Surroundings  B. Boundary  C. Volume  D. Environment

Description : What is the mass or region outside the system called?  A. Surroundings  B. Boundary  C. Volume  D. Environment

Last Answer : Surroundings

The contact surface shared by both the system and the surroundings is called _________.  a. wall  b. boundary  c. interface  d. intersection

Description : The contact surface shared by both the system and the surroundings is called _________.  a. wall  b. boundary  c. interface  d. intersection

Last Answer : boundary

What is the real or imaginary surface that separates the system from its surroundings?  A. Division  B. Wall  C. Boundary  D. Interface

Description : What is the real or imaginary surface that separates the system from its surroundings?  A. Division  B. Wall  C. Boundary  D. Interface

Last Answer : Boundary

A control volume refers to what?  a. A fixed region in space  b. A reversible process  c. an isolated system  d. a specified mass

Description : A control volume refers to what?  a. A fixed region in space  b. A reversible process  c. an isolated system  d. a specified mass

Last Answer : A fixed region in space

What is referred to by control volume?  a. An isolated system  b. Closed system  c. Fixed region in space  d. Reversible process only

Description : What is referred to by control volume?  a. An isolated system  b. Closed system  c. Fixed region in space  d. Reversible process only

Last Answer : Fixed region in space

A Thermodynamic Term That refers to any fixed region in a space  a. Control Volume  b. Volume  c. Density  d. Natural Gas

Description : A Thermodynamic Term That refers to any fixed region in a space  a. Control Volume  b. Volume  c. Density  d. Natural Gas

Last Answer : Control Volume

Gas is enclosed in a cylinder with a weighted piston as the stop boundary. The gas is heated and expands from a volume of 0.04 m^3 to 0.10 m^3 at a constant pressure of 200kPa.Calculate the work done by the system.  A. 8 kJ  B. 10 kJ  C.12 kJ  D.14 kJ Formula: W = p(V2-V1)

Description : Gas is enclosed in a cylinder with a weighted piston as the stop boundary. The gas is heated and expands from a volume of 0.04 m^3 to 0.10 m^3 at a constant pressure of 200kPa.Calculate the work done by the system.  A. 8 kJ  B. 10 kJ  C.12 kJ  D.14 kJ Formula: W = p(V2-V1)

Last Answer : 12 kJ

A gas is enclosed in a cylinder with a weighted piston as the top boundary. The gas is heated and expands from a volume of 0.04 m3 to 0.10 m3 at a constant pressure of 200 kPa. Find the work done on the system.  a. 5 kJ  b. 15 kJ  c. 10 kJ  d. 12 kJ

Description : A gas is enclosed in a cylinder with a weighted piston as the top boundary. The gas is heated and expands from a volume of 0.04 m3 to 0.10 m3 at a constant pressure of 200 kPa. Find the work done on the system.  a. 5 kJ  b. 15 kJ  c. 10 kJ  d. 12 kJ

Last Answer : 12 kJ

The boundaries of a control volume, which may either real or imaginary is called _____.  A. Control boundary  B. Control system  C. Interface  D. Control surface

Description : The boundaries of a control volume, which may either real or imaginary is called _____.  A. Control boundary  B. Control system  C. Interface  D. Control surface

Last Answer : Control surface

What system in which neither mass nor energy cross the boundaries and is not influenced by the surroundings?  a. Closed system  b. Open system  c. Isolated system  d. All of these

Description : What system in which neither mass nor energy cross the boundaries and is not influenced by the surroundings?  a. Closed system  b. Open system  c. Isolated system  d. All of these

Last Answer : Isolated system

For a body cooling in a draft, the rate of heat loss is proportional to the difference in temperature between the body and its surroundings.  a. Nemst Effect  b. Caloric Theory  c. Joule’s Law  d. Newton’s Law of Cooling

Description : For a body cooling in a draft, the rate of heat loss is proportional to the difference in temperature between the body and its surroundings.  a. Nemst Effect  b. Caloric Theory  c. Joule’s Law  d. Newton’s Law of Cooling

Last Answer : Newton’s Law of Cooling

What is defined as a process during which a fluid flows through a control volume steadily?  A. Transient-flow process  B. Steady and uniform process  C. Uniform-flow process  D. Steady-flow process

Description : What is defined as a process during which a fluid flows through a control volume steadily?  A. Transient-flow process  B. Steady and uniform process  C. Uniform-flow process  D. Steady-flow process

Last Answer : Steady-flow process

Universal gas constant is defined as equal to product of the molecular weight of the gas and  (a) specific heat at constant pressure  (b) specific heat at constant volume  (c) ratio of two specific heats  (d) gas constant  (e) unity.

Description : Universal gas constant is defined as equal to product of the molecular weight of the gas and  (a) specific heat at constant pressure  (b) specific heat at constant volume  (c) ratio of two specific heats  (d) gas constant  (e) unity.

Last Answer : Answer : d

What do you call a system in which there is a flow of matter through the boundary?  a. Closed system  b. Open system  c. Isolated system  d. All of these

Description : What do you call a system in which there is a flow of matter through the boundary?  a. Closed system  b. Open system  c. Isolated system  d. All of these

Last Answer : Open system

Anything that is outside the system boundary is called ________.  a. Surrounding  b. Natural Environment  c. Closed System  d. Open System

Description : Anything that is outside the system boundary is called ________.  a. Surrounding  b. Natural Environment  c. Closed System  d. Open System

Last Answer : Surrounding

A system having a rigid boundary that energy, work and mass does not cross its boundaries  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : A system having a rigid boundary that energy, work and mass does not cross its boundaries  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Isolated System

Work done in pushing a fluid across a boundary, Usually into or out of a system  a. Flow Work  b. Flow Energy  c. Both a & b  d. None of the above

Description : Work done in pushing a fluid across a boundary, Usually into or out of a system  a. Flow Work  b. Flow Energy  c. Both a & b  d. None of the above

Last Answer : Both a & b

A system whose boundary does not allow the exchange of either matter or energy with the surrounding  a. open system  b. closed system  c. isolated system  d. none of the above

Description : A system whose boundary does not allow the exchange of either matter or energy with the surrounding  a. open system  b. closed system  c. isolated system  d. none of the above

Last Answer : isolated system

The first law of thermodynamics may be expressed in the following equivalent  a. the net heat transfer id equal to the network  b. the sum of the total energy forms leaving the system boundary is always equal to the energy input  c. energy can neither be created nor destroyed but only converted from one form to another  d. all of the above

Description : The first law of thermodynamics may be expressed in the following equivalent  a. the net heat transfer id equal to the network  b. the sum of the total energy forms leaving the system boundary is ... neither be created nor destroyed but only converted from one form to another  d. all of the above

Last Answer : all of the above

The flow energy of 5 ft3 of a fluid passing a boundary to a system is 80,000 ft-lb. Determine the pressure at this point.  a. 222 psi  b. 333 psi  c. 444 psi  d. 111 psi formula: Ef= pV

Description : The flow energy of 5 ft3 of a fluid passing a boundary to a system is 80,000 ft-lb. Determine the pressure at this point.  a. 222 psi  b. 333 psi  c. 444 psi  d. 111 psi formula: Ef= pV

Last Answer : 111 psi

The flow energy of 150 L of a fluid passing a boundary to a system is 110 kJ. Determine the pressure at this point  a. 733.33 kPa  b. 833.33 kPa  c. 933.33 kPa  d. 633.33 kPa

Description : The flow energy of 150 L of a fluid passing a boundary to a system is 110 kJ. Determine the pressure at this point  a. 733.33 kPa  b. 833.33 kPa  c. 933.33 kPa  d. 633.33 kPa

Last Answer : 733.33 kPa

“The entropy change of a system during a process is equal to the net entropy transfer through the system boundary and the entropy generated within the system”. This statement is known as:  A. Entropy generation  B. Entropy change of a system  C. Entropy balance relation  D. Third law of thermodynamics

Description : The entropy change of a system during a process is equal to the net entropy transfer through the system boundary and the entropy generated within the system . This statement is known as:  A. Entropy ...  B. Entropy change of a system  C. Entropy balance relation  D. Third law of thermodynamics

Last Answer : Entropy balance relation

What is a form of mechanical work which is related with the expansion and compression of substances?  A. Boundary work  B. Thermodynamic work  C. Phase work  D. System work

Description : What is a form of mechanical work which is related with the expansion and compression of substances?  A. Boundary work  B. Thermodynamic work  C. Phase work  D. System work

Last Answer : Boundary work

A system in which even energy is not allowed to cross the boundary is called ____.  A. Closed system  B. Exclusive system  C. Isolated system  D. Special system

Description : A system in which even energy is not allowed to cross the boundary is called ____.  A. Closed system  B. Exclusive system  C. Isolated system  D. Special system

Last Answer : Isolated system

A system which consists of fixed amount of mass and no mass can cross its boundary called _____.  A. Equilibrium system  B. Thermal equilibrium system  C. Open system  D. Closed system

Description : A system which consists of fixed amount of mass and no mass can cross its boundary called _____.  A. Equilibrium system  B. Thermal equilibrium system  C. Open system  D. Closed system

Last Answer : Closed system

A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.  A. Yes  B. No

Description : A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.  A. Yes  B. No

Last Answer : Answer: A

An isolated system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy and mass cross the boundaries of the system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Description : An isolated system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both ... system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Last Answer : Answer : b

An open system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy and mass cross the boundaries of the system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Description : An open system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy ... system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Last Answer : Answer : c

A closed system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) mass crosses the boundary but not the energy (c) neither mass nor energy crosses the boundaries of the system  (d) both energy and mass cross the boundaries of the system  (e) thermodynamic reactions take place.

Description : A closed system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) mass crosses the boundary but not the energy (c) neither mass nor energy ...  (d) both energy and mass cross the boundaries of the system  (e) thermodynamic reactions take place.

Last Answer : Answer : a

The rate at which this is quantity passes through a fixed boundary per unit time  a. Flux  b. Existence  c. Irradiance  d. All of these

Description : The rate at which this is quantity passes through a fixed boundary per unit time  a. Flux  b. Existence  c. Irradiance  d. All of these

Last Answer : All of these

The state of a thermodynamic system is always defined by its:  a. Absolute temperature  b. process  c. properties  d. temperature and pressure

Description : The state of a thermodynamic system is always defined by its:  a. Absolute temperature  b. process  c. properties  d. temperature and pressure

Last Answer : properties

It is a region enclosed by specified boundaries, which may be imaginary, either fixed or moving  a. Isolated system  b. Open system  c. System  d. None of the above

Description : It is a region enclosed by specified boundaries, which may be imaginary, either fixed or moving  a. Isolated system  b. Open system  c. System  d. None of the above

Last Answer : System

What happens to the internal energy of water at reference temperature where enthalpy is zero?  a. Becomes negative  b. Becomes positive  c. Remains constant  d. Cannot be defined

Description : What happens to the internal energy of water at reference temperature where enthalpy is zero?  a. Becomes negative  b. Becomes positive  c. Remains constant  d. Cannot be defined

Last Answer : Becomes negative

What is defined as the quantity of heat needed to raise the temperature of one kilogram of water by one degrees Celsius?  a. Kilojoule  b. Btu  c. Kilocalorie  d. Latent heat

Description : What is defined as the quantity of heat needed to raise the temperature of one kilogram of water by one degrees Celsius?  a. Kilojoule  b. Btu  c. Kilocalorie  d. Latent heat

Last Answer : Kilocalorie

The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript “c”refers to critical value)  A. z = P / Pc  B. z = pV/ RT  C. z = T /Tc  D. z = RT / pV Hint: for an real gases the compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT

Description : The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript c refers to critical value)  A. ... compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT

Last Answer : z = pV/ RT

_________ is defined as that equivalent to the pressure due to a column of mercury 76cm long.  a. surface pressure  b. gage pressure  c. standard atmospheric pressure  d. isobaric pressure

Description : _________ is defined as that equivalent to the pressure due to a column of mercury 76cm long.  a. surface pressure  b. gage pressure  c. standard atmospheric pressure  d. isobaric pressure

Last Answer : standard atmospheric pressure

Defined as the ratio of weight of dry steam to the weight of stuff.  a. dryness fraction  b. Vaporization  c. fusion  d. super heated steam

Description : Defined as the ratio of weight of dry steam to the weight of stuff.  a. dryness fraction  b. Vaporization  c. fusion  d. super heated steam

Last Answer : dryness fraction

What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled?  A. Rankine coefficient  B. Kelvin coefficient  C. Maxwell-Boltzmann coefficient  D. Joule-Thomson coefficient

Description : What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled?  A. Rankine coefficient  B. Kelvin coefficient  C. Maxwell-Boltzmann coefficient  D. Joule-Thomson coefficient

Last Answer : Joule-Thomson coefficient

What is defined as the ratio of the net electrical power output to the rate of fuel energy input?  A. Combustion efficiency  B. Thermal efficiency  C. Overall efficiency  D. Furnace efficiency

Description : What is defined as the ratio of the net electrical power output to the rate of fuel energy input?  A. Combustion efficiency  B. Thermal efficiency  C. Overall efficiency  D. Furnace efficiency

Last Answer : Overall efficiency

What is defined as the energy required to raise the temperature of a unit mass of a substance by one degree?  A. Latent heat of fusion  B. Molar heat  C. Specific heat capacity  D. Specific heat

Description : What is defined as the energy required to raise the temperature of a unit mass of a substance by one degree?  A. Latent heat of fusion  B. Molar heat  C. Specific heat capacity  D. Specific heat

Last Answer : Specific heat

What is defined as the direct conversion of a substance from the solid to the vapor state or vice versa without passing the liquid state?  A. Condensation  B. Vaporization  C. Sublimation  D. Cryogenation

Description : What is defined as the direct conversion of a substance from the solid to the vapor state or vice versa without passing the liquid state?  A. Condensation  B. Vaporization  C. Sublimation  D. Cryogenation

Last Answer : Sublimation

What is defined as the force per unit area?  A. Pressure  B. Energy  C. Work  D. Power

Description : What is defined as the force per unit area?  A. Pressure  B. Energy  C. Work  D. Power

Last Answer : Pressure

Two masses, one of the 10kg and the other unknown, are placed on a scale in a region where g = 9.67 m/sec2 . The combined weight of these two masses is 174.06 N. Find the unknown mass in kg.  a. 20 kg  b. 19 kg  c. 18 kg  d. 17 kg formula: m=Fg k / g

Description : Two masses, one of the 10kg and the other unknown, are placed on a scale in a region where g = 9.67 m/sec2 . The combined weight of these two masses is 174.06 N. Find the unknown mass in kg.  a. 20 kg  b. 19 kg  c. 18 kg  d. 17 kg formula: m=Fg k / g

Last Answer : 18 kg

A pressure gage registers 50 psig in a region where the barometer is 14.25 psia. Find absolute pressure in psia, Pa. (Formula; p = patm+ pg)  a. 433 kPa  b. 443 kPa  c. 343 kPa  d. None of the above

Description : A pressure gage registers 50 psig in a region where the barometer is 14.25 psia. Find absolute pressure in psia, Pa. (Formula; p = patm+ pg)  a. 433 kPa  b. 443 kPa  c. 343 kPa  d. None of the above

Last Answer : 443 kPa

Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Enthalpy

Twenty grams of oxygen gas are compressed at a constant temperature of 30 ˚C to 5%of their original volume. What work is done on the system.  A.824 cal  B.924 cal  C.944 cal  D.1124 cal Formula: W = -mRTln (V2/V1) Where R = (1.98 cal/gmole·K) (32 g/gmole)

Description : Twenty grams of oxygen gas are compressed at a constant temperature of 30 ˚C to 5%of their original volume. What work is done on the system.  A.824 cal  B.924 cal  C.944 cal  D.1124 cal Formula: W = -mRTln (V2/V1) Where R = (1.98 cal/gmole·K) (32 g/gmole)

Last Answer : 1124 cal

Open system is also known as _________.  a. isolated system  b. closed container  c. control mass  d. control volume

Description : Open system is also known as _________.  a. isolated system  b. closed container  c. control mass  d. control volume

Last Answer : control volume

A closed system is also known as _________.  a. isolated system  b. closed container  c. control mass  d. control volume

Description : A closed system is also known as _________.  a. isolated system  b. closed container  c. control mass  d. control volume

Last Answer : control mass

An open system may refer to ______.  A. Control mass  B. Control volume  C. Control energy  D. Control temperature

Description : An open system may refer to ______.  A. Control mass  B. Control volume  C. Control energy  D. Control temperature

Last Answer : Control volume

A closed system may refer to ______.  A. Control mass  B. Control volume  C. Control energy  D. Control temperature

Description : A closed system may refer to ______.  A. Control mass  B. Control volume  C. Control energy  D. Control temperature

Last Answer : Control mass