Description : It is an energy flux, equal to the rate of energy flow per unit area per unit time across some surface. a. Irradiance b. Radiant Intensity c. Luminosity d. Brightness
Last Answer : Luminosity
Description : What is defined as the force per unit area? A. Pressure B. Energy C. Work D. Power
Last Answer : Pressure
Description : The energy of molecular motion appears as (a) heat (b) potential energy (c) surface tension (d) friction (e) increase in pressure.
Last Answer : Answer : a
Description : Vapor pressure depends only on _________. a. pressure b. force c. volume d. temperature
Last Answer : temperature
Description : _________ is the unit of pressure and stress. a) Newton b) Pascal c) Hertz d) Joule
Last Answer : Pascal
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
Description : Mass (not weight) per unit volume a. Specific Weight b. Specific Volume c. Density d. None of the above
Last Answer : Density
Description : Without electrical, mechanical, gravitational, surface tension and motion effects, a system is called _____ system. A. Simple B. Simple compressible C. Compressible D. Independent
Last Answer : Simple compressible
Description : Temperature of a gas is produced due to (a) its heating value (b) kinetic energy of molecules (c) repulsion of molecules (d) attraction of molecules (e) surface tension of molecules.
Last Answer : Answer : b
Description : Is the force of gravity on unit volume? a. Specific Weight b. Specific Heat c. Specific Pressure d. Specific Volume
Last Answer : Specific Weight
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 : To displace a cubic foot of fresh water, you need _________ force. a. 62.4 lb b. 9.81 lb c. 76 lb d. 760 lb
Last Answer : 62.4 lb
Description : The unit of pressure in S.I. units is (a) kg/cm2 (b) mm of water column (c) pascal (d) dynes per square cm (e) bars
Last Answer : Answer : c
Description : _________ is a measure of the average kinetic energy per molecule in a substance. a. movement b. temperature c. heat d. mass
Description : In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state. a. Rankine Process b. Carnot Cycle c. Joule-Thomson process d. Refrigeration process
Last Answer : Joule-Thomson process
Description : The temperature at which the vapor pressure exactly equals one atm is called _________. a. boiling temperature b. normal boiling point c. triple point d. point of infliction
Last Answer : normal boiling point
Description : _______ of a body means the force of the gravity Fg on the body a. Mass b. Weight c. Density d. Volume
Last Answer : Weight
Description : _________ is the temperature to which the air must be cooled, at constant pressure, to produce saturation. a. relative humidity b. triple point temperature c. dew point d. critical point
Last Answer : dew point
Description : If any external pressure is applied to a confined fluid, the pressure will be increased at every point in the fluid by the amount of the external pressure is known as _________. a. Torricelli’s law b. Barometric law c. Newton’s Second law d. Pascal’s law
Last Answer : Pascal’s law
Description : Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively. a. raising the temp and lowering the temp b. maintaining the pressure and changing the temperature c. decreasing the volume and increasing the pressure d. lowering the temp and raising the temp
Last Answer : raising the temp and lowering the temp
Description : Boiling temperature of a material is dependent on its _________. a. volume b. power c. heat d. pressure
Last Answer : pressure
Description : The gas in a constant gas thermometer cooled to absolute zero would have _________. a. no volume b. no pressure c. zero temperature at all scales d. none of the above
Last Answer : no pressure
Description : __________ is the unit of force. a) Newton b) Pascal c) Hertz d) Joule
Last Answer : Newton
Description : The unit of length in S.I. units is (a) meter (b) centimeter (c) kilometer (d) millimeter.
Description : Extensive properties per unit mass are called _____. A. Specific properties B. Relative properties C. Unit properties D. Phase properties
Last Answer : Specific properties
Description : The molecular number density of an ideal gas at standard temperature and pressure in cm3 a. Froude number b. Loschmidt number c. Mach number d. Reynold number
Last Answer : Loschmidt number
Description : Which of the following cannot be a property of a gas? a. density b. pressure c. viscosity d. temperature
Last Answer : viscosity
Description : A 30-m vertical column of fluid (density 1878 kg/m3 ) is located where g= 9.65 mps2 . Find the pressure at the base of the column. (Formula: pg= gρhg/k ) a. 543680 N/m2 b. 543.68 kPa (gauge) c. Both a & b d. None of the above
Last Answer : Both a & b
Description : What is constant for a substance that is considered “incompressible”? A. Specific volume of density B. Pressure C. Temperature D. All of the above
Last Answer : Specific volume of density
Description : Which is NOT an intensive property of thermodynamics? A. Temperature B. Mass C. Pressure D. Density
Last Answer : Mass
Description : According to Avogadro’s law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure. A. equal to B. directly proportional to C. inversely proportional to
Last Answer : Answer: B
Description : Which of the following is not the intensive property (a) pressure (b) temperature (c) density (d) heat (e) specific volume.
Last Answer : Answer : d
Description : Which of the following is the property of a system (a) pressure and temperature (b) internal energy (c) volume and density (d) enthalpy and entropy (e) all of the above.
Last Answer : Answer : e
Description : Which of the following quantities is not the property of the system (a) pressure (b) temperature (c) specific volume (d) heat (e) density.
Description : Properties of substances like pressure, temperature and density, in thermodynamic coordinates are (a) path functions (b) point functions (c) cyclic functions (d) real functions (e) thermodynamic functions.
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 heat per unit mass per degree change in temperature a. specific heat b. isometric c. conservation of energy d. none of the above
Last Answer : specific heat
Description : The heat Q per unit mass per degree change in temperature that must be supplied or removed to change the temperature of a substance. a. Specific Heat Capacity b. Latent Heat c. Heat of Transformation d. Internal Heat
Last Answer : Specific Heat Capacity
Description : What refers to the rate of thermal radiation emitter per unit area of a body? A. Thermal conductivity B. Absorptivity C. Emissivity D. Emissive power
Last Answer : Emissive power
Description : The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to (a) E/3 (b) E/2 (c) 3E/4 (d)2E/3 (e) 5E/4.
Description : The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called A.specific heat at constant volume B.specific heat at constant pressure C.kilo Joule D.none of these
Last Answer : Answer: A
Description : Intensive properties of a system are called _________. a. Bulk Properties b. Innate Properties c. Natural Properties d. Inside Properties
Last Answer : Bulk Properties
Description : The process of one substance mixing with another because of molecular motion is called _________. a. diffusion b. viscosity c. streamline flow d. solution
Last Answer : diffusion
Description : An ideal gas as compared to a real gas at very high pressure occupies (a) more volume (b) less volume (c) same volume (d) unpredictable behaviour (e) no such correlation.
Description : The SI unit of pressure a. Pa b. N c. J d. None of the above
Last Answer : Pa
Description : A unit of pressure used in high vacuum technology, which is equal to 1mmhg. a. specific heat b. isometric c. isobaric d. torr
Last Answer : torr
Description : What is the SI unit of pressure? A. Atm B. Bar C. Pa D. Psi
Description : The specific heat at constant volume is A. the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure B. the amount of heat required to raise ... to raise the temperature of 1 kg of water through one degree D. any one of the above
Description : The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas. A.one-half B.one-third C.two-third D.three-fourth
Last Answer : Answer: C
Description : What type of pressure cannot be used for Boyle’s Law? a. Atmospheric Pressure b. Gauge Pressure c. Surface Pressure d. Isobaric Pressure
Last Answer : Gauge Pressure