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

1 Answer

Answer :

System

Related questions

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

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

Description : What refers to a system in which there is a flow of mass across its boundaries?  a. Open system  b. Closed system  c. Isolated system  d. Non-flow system

Last Answer : Open system

Description : What system in which there is no exchange of matter with the surrounding or mass does not cross its boundaries?  a. Open system  b. Closed system  c. Isolated system  d. Non-flow system

Last Answer : Closed system

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

Description : A classification of a system in which mass crosses its boundaries.  a. Closed System  b. Open System  c. Isolated System  d. None of the above

Last Answer : Open System

Description : Only energy can cross the boundaries.  a. Closed system  b. Open system  c. Isolated system  d. Isoenergetic system

Last Answer : Closed system

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

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

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

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

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

Description : A classification of system in which mass does not cross its boundaries.  a. Nonflow System  b. Open System  c. Closed System  d. None of the above

Last Answer : Closed System

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

Description : Types of system except one  a. closed  b. open  c. isolated  d. solid

Last Answer : solid

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

Last Answer : control volume

Description : A system in which there is a flow of mass is known as _____.  A. Equilibrium system  B. Isolated system  C. Open system  D. Closed system

Last Answer : Open system

Description : Mixture of ice and water form a  (a) closed system  (b) open system  (c) isolated system  (d) heterogeneous system  (e) thermodynamic system.

Last Answer : Answer : d

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

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

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

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

Description : Is a thermodynamic system that operates continuously with only energy (heat and work) crossing its boundaries?  a. Heat Engine  b. Heat Reservoir  c. Heat Source  d. Heat Sink

Last Answer : Heat Engine

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

Description : How are thermodynamic properties classified?  A. Physical and chemical  B. Intensive and extensive  C. Real and imaginary  D. Homogeneous and heterogeneous

Last Answer : Intensive and extensive

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

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

Last Answer : control mass

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

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

Description : “The state of a simple compressible system is completely specified by two independent, intensive properties”. This is known as ______.  A. Equilibrium postulate  B. State postulate  C. Environment postulate  D. Compressible system postulate

Last Answer : State postulate

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

Last Answer : Control volume

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

Last Answer : Surroundings

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

Last Answer : System

Description : A device that violates either the first law of thermodynamics or the second law of thermodynamics is known as _____.  A. Ambiguous machine  B. Universal machine  C. Perpetual-motion machine  D. Unique machine

Last Answer : Perpetual-motion machine

Description : At same temperatures, the radiation emitted by all real surfaces is ______ the radiation emitted by a black body.  A. Less than  B. Greater than  C. Equal to  D. Either less than or greater than

Last Answer : Less than

Description : What is a process with identical end states called?  A. Cycle  B. Path  C. Phase  D. Either path or phase

Last Answer : Cycle

Description : The area under the temperatureentropy curve (T – s curve) of any thermodynamic process represents  A. heat absorbed  B. heat rejected  C. either (a) or (b)  D. none of these

Last Answer :  C. either (a) or (b)

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

Description : Occurring at fixed temperature  a. isentropic  b. Adiabatic  c. Isothermal  d. polytropic

Last Answer : Isothermal

Description : “If the temperature o f a fixed quantity of a gas is held constant during a change of state, the volume varies inversely with the absolute pressure.  a. Charle’s Law  b. Boyle’s Law  c. Dalton’s Law  d. Amagat’s Law

Last Answer : Boyle’s Law

Description : A substance that has a fixed chemical composition is known as ______ substance.  A. Monoatomic  B. Heterogeneous  C. Homogeneous  D. Pure

Last Answer : Pure

Description : The molecules of a gas moving through space with some velocity possesses what kind of energy?  A. Translational energy  B. Spin energy  C. Rotational kinetic energy  D. Sensible energy

Last Answer : Translational energy

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

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

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

Last Answer : Surrounding

Description : The flow through an open system is _________ if all properties at each point within the system remain constant with respect to time.  a. streamline flow  b. steady flow  c. constant flow  d. algebraic flow

Last Answer : steady flow

Description : The thermodynamic properties that are dependent on the size or extent of the system is called _____.  A. Extensive property  B. Intensive property  C. Open property  D. Closed property

Last Answer : Extensive property

Description : The thermodynamic properties that are independent on the size of the system is called _____.  A. Extensive property  B. Intensive property  C. Open property  D. Closed property

Last Answer : Intensive property

Description : Open system usually encloses which of the following devices?  A. Compressor  B. Turbine  C. Nozzle  D. All of the above

Last Answer : All of the above

Description : The processes occuring in open system which permit the transfer of mass to and from the system, are known as  A.flow processes  B.non-flow processes  C.adiabatic processes  D.none of these

Last Answer : Answer: A