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 : 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 : 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 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 : 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 : Only energy can cross the boundaries. a. Closed system b. Open system c. Isolated system d. Isoenergetic system
Last Answer : Closed system
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 : 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
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
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
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 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 : 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 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 there is a flow of mass is known as _____. A. Equilibrium system B. Isolated system C. Open system D. Closed 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 : 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 : Anything that is outside the system boundary is called ________. a. Surrounding b. Natural Environment c. Closed System d. Open System
Last Answer : Surrounding
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
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 : 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 : 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
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
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
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
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 : 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
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
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 : What is the mass or region outside the system called? A. Surroundings B. Boundary C. Volume D. Environment
Last Answer : Surroundings
Description : What are the only two forms of energy interactions associated with a closed system? A. Kinetic energy and heat B. Heat transfer and work C. Thermal energy and chemical energy D. Latent energy and thermal energy
Last Answer : Heat transfer and work
Description : A closed system may refer to ______. A. Control mass B. Control volume C. Control energy D. Control temperature
Last Answer : Control mass
Description : Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant (a) pressure (b) temperature (c) volume (d) internal energy (e) entropy.
Description : Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant (a) pressure (b) temperature (c) volume (d) internal energy (e) entropy.
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
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
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
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 : What is defined a region in space chosen for study? A. Surroundings B. System C. Boundary D. Volume
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 : 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 : Which of the following is the work done for a closed reversible isometric system? a. negative b. positive c. zero d. undefined
Last Answer : zero
Description : What is the value of the work done for a closed, reversible isometric system? a. zero b. positive c. negative d. positive or negative
Description : A state occurs when a system is in equilibrium a. Natural Environment b. Closed System c. Surrounding d. Isentropic
Last Answer : Natural Environment
Description : Let a closed system execute a state change for which the heat is Q = 100 J and work is W = -25 J. Find E. ∆ (Formula: E = Q- W) ∆ a. 125 J b. 123 J c. 126 J d. None of the above
Last Answer : 125 J
Description : What is the value of the work done for a closed, reversible isometric system? A. Zero B. Positive C. Negative D. Positive or negative
Last Answer : Zero
Description : What is a process in which the system remains infinitesimally closed to an equilibrium state at all times? A. Path equilibrium process B. Cycle equilibrium process C. Phase equilibrium process D. Quasi-state or quasiequilibrium process
Last Answer : Quasi-state or quasi- equilibrium process