Description : Which of the following engines was introduced by a German engineer, Nickolas Otto? a. Gasoline engine b. Diesel engine c. Gas turbine d. Thermal engine
Last Answer : Gasoline engine
Description : Which of the following engines is the most efficient? a. Gas turbine b. Diesel engine c. Carnot engine d. Gasoline engine
Last Answer : Carnot engine
Description : Which of the following is least efficient? a. Gas turbine b. Diesel engine c. Carnot engine d. Gasoline engine
Description : The efficiency and work ratio of a simple gas turbine cycle are A.low B.very low C.high D.very high
Last Answer : Answer: B
Description : Gas turbine cycle consists of (a) two isothermals and two isentropics (b) two isentropics and two constant volumes (c) two isentropics, one constant volume and one constant pressure (d) two isentropics and two constant pressures (e) none of the above.
Last Answer : Answer : d
Description : The compression of the gas in two or more cylinders in place of a single cylinder compressor a. Single Staging b. Double Staging c. Multistaging d. None of the above
Last Answer : Multistaging
Description : Minimum work in compressor is possible when the value of adiabatic index n is equal to (a) 0.75 (b) 1 (c) 1.27 (d) 1.35 (e) 2.
Last Answer : Answer : b
Description : Which of the following thermodynamic devices operates the reverse of the heat engine? a. Thermal pump b. Thermal evaporator c. Thermal condenser d. Thermal equilibrant
Last Answer : Thermal pump
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 : 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 : 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 : 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 : 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 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 : 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 : Types of system except one a. closed b. open c. isolated d. solid
Last Answer : solid
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 : 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 : Only energy can cross the boundaries. a. Closed system b. Open system c. Isolated system d. Isoenergetic system
Description : Open system is also known as _________. a. isolated system b. closed container c. control mass d. control volume
Last Answer : control volume
Description : An open system may refer to ______. A. Control mass B. Control volume C. Control energy D. Control temperature
Last Answer : Control volume
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 : 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 : 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 : 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
Description : Mixture of ice and water form a (a) closed system (b) open system (c) isolated system (d) heterogeneous system (e) thermodynamic 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 : It is used for gas turbines which operates on an open cycle where both the compression and expansion processes take place in rotating machinery. a. Dual Cycle b. Otto Cycle c. Carnot Cycle d. Brayton Cycle
Last Answer : Brayton Cycle
Description : The boiling of water into steam in an open container is an example of a/an _________ process. a. adiabatic b. isochoric c. isobaric d. zero work
Last Answer : isobaric
Description : The door of a running refrigerator inside a room was left open. Which of the following statements is correct? (a) The room will be cooled to the temperature inside the refrigerator. (b) The room ... air in room will remain unaffected. (e) any one of above is possible depending on the capacity.
Description : Why gas turbine power plant needs efficient compressor ?
Last Answer : Because a large portion of turbine work is eaten away by compressor and its inefficiency will affect net power output and cost of generation.
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 : If two systems are in the thermal equilibrium with a third system, then they must be in thermal equilibrium with each other. a. Zeroth Law of Thermodynamics b. First Law of Thermodynamics c. Second Law of Thermodynamics d. Third Law of Thermodynamics
Last Answer : Zeroth Law of Thermodynamics
Description : Which of the following values characterize the state of the system? a. cycle b. process c. property d. enthalpy
Last Answer : enthalpy
Description : Entropy is the measure of: a. The internal energy of a gas b. The heat capacity of a substance c. Randomness or disorder d. The change of enthalpy of a system
Last Answer : Randomness or disorder
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
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 : What refers to the series of states through which a system passes during the process? a. path b. quasi- static steps c. reversibility moves d. irreversibility moves
Last Answer : path
Description : The change that the system that undergoes from one equilibrium state to another is known as a. oath b. process c. enthalpy change d. entropy change
Last Answer : process
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 : 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 : If any one or more properties of a system change, the system is said to have undergone a _______. a. Cycle b. System c. Process d. None of the above
Last Answer : Process
Description : Is the energy in transit (on the move) from the one body or system to another solely because of a temperature between the bodies or systems. a. Work b. Heat c. Energy d. None of the above
Last Answer : Heat
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 : 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 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