单选题The sum of the sensible heat and the latent heat of any substance is known as （）.Atotal heatBresidual heatCspecific heatDsuperheat
单选题
The sum of the sensible heat and the latent heat of any substance is known as （）.
A
total heat
B
residual heat
C
specific heat
D
superheat
参考解析
解析：
暂无解析
相关考题：
For what purpose are the diving pipes used?A. To absorb heat from the sun.B. To store heat for future use.C. To turn solar energy into heat energy.D. To carry heat down below the surface.
The heat identified by only a change in temperature is known asA.sensible heatB.latent heatC.total heatD.residual heat
Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?A.RadiationB.ConductionC.Natural convectionD.contact directly
The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called _____.A.boiling offB.flash evaporationC.condensationD.none of the above
The heat gained per pound of refrigerant in the evaporator is known as the ______.A.latent heat of vaporizationB.sensible heatC.refrigerating effectD.specific heat of vaporization
The sum of the sensible heat and the latent heat of any substance is known as ______.A.total heatB.residual heatC.specific heatD.superheat
单选题The latent heat of evaporation is dissipated in the （） in a compression refrigeration system.AevaporatorBcondenserCexpansion valveDcompressor
单选题What is the purpose of sub cooling R-12 in the condenser?（）Ato increase the system efficiency by sensible heat transferBto stop the liquid from flashingCto reduce the load on the compressorDto remove latent heat of vaporization and the suction piping transfer
单选题The sum of the sensible heat and the latent heat of any substance is known as （）.Atotal heatBresidual heatCspecific heatDsuperheat
单选题In a refrigeration system, the refrigerant absorbs the latent heat of vaporization in the（）.AcompressorBcondenserCreceiverDevaporator
单选题The heat removed from the refrigerant in the condenser of a refrigeration plant is the （）Alatent heat of expansionBsensible heat of condensationCheat of compressionDall of the above
单选题The three basic elements necessary for any fire are （）.Aheat, gas, and flamesBfuel, heat, and oxygenCheat, nitrogen, and fuelDfuel oil, nitrogen, and oxygen
单选题The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called （）.Aboiling offBflash evaporationCcondensationDnone of the above
单选题Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?（）ARadiationBConductionCNatural convectionDAll of the above
单选题The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by （）.Apassing it through the expansion valveBcondensing refrigerant in the system condenserCpassing the gaseous refrigerant through the heat interchanger on the suction side of the compressorDmaintaining a high pressure on the systems receiver
单选题The rate of heat transfer from a hot region to a cold region is affected most by the （）.Asize of the heat sinkBtemperature difference between the regionsCsize of the heat sourceDtotal heat of the system
单选题Which of the following statements is correct concerning heat transfer?（）AHeat is given off from a high temperature region known as a heat sinkBHeat transfer rate is affected most by the size of the heat sink involvedCHeat transfer rate is affected most by the temperature difference between the heat source and the heat sinkDHeat transfer by radiation will occur only by mass motion of a fluid substance
单选题The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.Aremain constant along the tubes lengthBbe greatest in a single pass counter flow heat exchangerCremain constant throughout the heat exchangerDvary from section to section through out the heat exchanger
单选题Latent heat changes the （） of water.Aphysical stateBtemperatureCatmospheric pressureDsensible pressure
单选题A condenser is a vessel in which（） is deprived of its latent heat of vaporization and so changed to its liquid state.Asea waterBfresh waterCvapourDgas
单选题Which of the following is true of the heating system of the Johnstown campus?AThe heat is supplied by human bodies only.BThe heat is supplied by both human bodies and other heat-emitting objects.CThe heat is supplied by both human bodies and conventional fuel.DThe heat is supplied by human bodies, other heat-emitting objects, and conventional fuel.
单选题The heat used to change a liquid to a vapor is called （）.Alatent heat of fusionBlatent heat of vaporizationCspecific heat of vaporizationDlatent heat of the gas
单选题The amount of heat released by steam when it changes to water at the same temperature is called（）.Alatent heat of condensationBlatent heat of vaporizationClatent heat of saturationDsensible heat of condensation
单选题The heat required to change a substance from a liquid to a gas without experiencing a temperature change is defined as the latent heat of （）.AfusionBvaporizationCsublimationDcondensation
单选题The latent heat of water vapor in air is dependent upon the （）Adry bulb temperatureBwet bulb temperatureCdew pointDdry point
单选题Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.Areduce electrolytic action on heat exchanger metalsBkeep heat transfer surfaces shiny and cleanCprevent rapid accumulation of marine growthDprovide a protective coating on heat exchanger surfaces
单选题The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is （）.Aevaporation is accomplished in a vacuumBdue to the higher temperature of the incoming feedCdue to the latent heat of evaporation principleDevaporation in a submerged medium produces more distillate
单选题The sensible heat of air is dependent upon the （）.Adry bulb temperatureBwet bulb temperatureCsaturation temperatureDwater vapor superheat