Expansion Valve中文名称为冷气压缩机的吐出阀.
Expansion Valve中文名称为冷气压缩机的吐出阀.
相关考题：
A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the superheat will result in a/anA.evaporator pressure decreaseB.evaporator coil over-feedC.evaporator capacity increaseD.expansion valve diaphragm rupture
单选题The thermal expansion valve controls the amount of refrigerant that is allowed to flow to the （）.AcompressorBcooling coilsCcondenserDreceiver
单选题If a refrigeration system compressor crankcase is sweating, you should （）.Aadd refrigerant to the systemBadjust the thermal expansion valve to the proper settingCadjust the float valve to the proper holding pressureDopen the hand expansion valve
单选题A ruptured diaphragm in a thermostatic expansion valve will cause the valve to （）.AopenBcloseCremain in its positionDflood the evaporator with refrigerant
单选题Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?（）ALube oil passing through the systemBMoisture or foreign matter collecting at the valve seat and orificeCVariable spring tension caused by the changing temperatureDFrost on the liquid line
单选题The scale trap is located between the （）Aking valve and the expansion valveBsolenoid valve and expansion valveCevaporator and receiverDcompressor and evaporator
单选题What is the function of thermostatic expansion valve in a compression refrigeration system?（）AnonexistentBfor controlling pressureCfor controlling superheatDfor controlling the solenoid valve
单选题What separate the high pressure side from the low pressure side in a refrigeration system?（）ACondenser and thermal expansion valveBKing and solenoid valvesCCompressor and thermal expansion valveDCondenser and solenoid valve
单选题Moisture in the refrigerant may （）.Afreeze on the expansion valve seat and reduce the flow of liquid refrigerantBemulsify the oil in the condenserCfreeze in the king valveDclog the oil trap
单选题A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.Aevaporator pressure decreaseBevaporator coil over-feedCevaporator capacity increaseDexpansion valve diaphragm rupture
单选题Moisture in a refrigeration system can cause （）.Afreezing the expansion valve closedBcorrosion of system pipingCimproper temperature regulationDall of the above
单选题When the heat load begins to increase, the needle valve of an expansion valve will（）Amove in an opening directionBmove in a closing directionCeither open or closeDnot move at all
单选题A solenoid valve used in a refrigeration system should be installed （）.Awith the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valveBupright, sensing temperature of the box, and upstream of the thermal expansion valveCupright, sensing temperature of the box, and downstream of the thermal expansion valveDupright, sensing heat of the tail coil, and upstream of the thermal expansion valve
单选题A cracked diaphragm in a thermostatic expansion valve will cause the valve to （）.Areturn to a neutral positionBflood the evaporatorCopenDclose
单选题When the refrigeration demand is small,（）Athe expansion valve will move toward the wide open positionBthe expansion valve will move toward the closing positionCthe feeler bulb will conveys the high temperatureDthe superheat degree will raise
单选题After passing through the expansion valve the refrigerant should be in the state of （）.AvaporBliquidCsolidDNone of the above is tree
单选题While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.Achange the expansion valve adjustmentBreadjust the water regulating valve to increase the flow of waterCpurge air from the condenserDclean the waterside of the condenser
单选题Constant superheat is maintained at the evaporator outlet of a refrigeration coil by a（）Asolenoid valveBlow pressure cutout switchCking valveDthermal expansion valve
单选题To correct the condition of slugging and flooding back in a refrigeration system, it may be necessary to （）.Are-adjust the discharge pressureBclean the expansion valve screenCadd refrigerantDadjust the expansion valve
单选题The low pressure side of a refrigeration system is considered to exist from the （）.Aexpansion valve to the compressorBreceiver to the expansion coilCexpansion valve to the evaporatorDcondenser to the expansion valve
单选题Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?（）AThe condenser and the expansion valveBThe king valve and the solenoid valveCThe compressor and the expansion valveDThe condenser and the solenoid valve
单选题A pressure drop in the liquid line of a refrigeration system may cause（）Athe solenoid valve to seizeBthe compressor to huntCflash gas to form in the liquid lineDthe expansion valve to freeze open
填空题冷气系统循环中五项机件为（）、压缩机、（）、贮液筒、膨胀阀等。