a) Hot and humid conditions b) Hot and dry conditions c) Cold and humid conditions d) Cold and ...
View QuestionDry ice is the solid form of _____________
a) carbon dioxide b) Sulphur dioxide c) ammonium choride d) carbontetraoxide Answer: a Explanation: Dry ice is ...
View QuestionIn the _____________, an electric current sent through a junction of two dissimilar materials results in either a heating or cooling of the junction.
a) Peltier effect b) See-beck effect c)Joule effect d) Thomson effect Answer: a Explanation: In the Peltier ...
View QuestionThe principle of flash cooling is achieved in _______________
a) thermoelectric refrigeration b) steam-jet refrigeration c) evaporative cooling d) absorption refrigeration Answer: b Explanation: Steam-jet refrigeration ...
View QuestionAre these statements about the natural refrigerants true? Statement 1: Propane and isobutene are natural refrigerants. Statement 2: These are produced from nature’s bio-chemical processes.
Are these statements about the natural refrigerants true? Statement 1: Propane and isobutene are natural refrigerants. Statement 2: ...
View Question_____________ freezers are used for deep freezing fish fillets.
a) Air blast b) Slow type c) Normal d) Low velocity Answer: a Explanation: Air blast freezers ...
View Question___________ is the difference between the boiling point temperature of the refrigerant in the evaporator coil and the actual temperature of the refrigerant gas as it leaves the evaporator.
a) Superheat b) Critical point c) Supercool d) Drastic point Answer: a Explanation: Superheat is the difference ...
View QuestionModern refrigerators usually use a refrigerant called ______________
a) HFC-134a b) CFC-134a c) HFC-1a d) HC-13a Answer: a Explanation: Modern refrigerators use a refrigerant ...
View QuestionThe first ice making machine used brewing was invented by ___________
a) James Harrison b) Charles Chamberland c) Nicolas Appert d) Clarence Birdseye Answer: a Explanation: The first ...
View QuestionWho designed refrigerator?
a) Oliver Evans b) Charles Chamberland c) Nicolas Appert d) Clarence Birdseye Answer: a Explanation: Oliver ...
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