CSN AC 110 Esco Exam | 100% Correct Answers | Verified | Latest 2024 Version

1. Heat which causes a change in temperature of a substance is called; A. latent heat B. sensible heat C. superheat D. radiant heat - B. sensible heat 2. Heat added to a substance without a raise in temperature; (example: liquid refrigerant to gas) this process is called? A. latent heat of vaporization B. latent heat of fusion. C. superheat of vaporization D. superheat of fusion - A. latent heat of vaporization 3. Heat added to the refrigerant in a vapor state after the evaporation process is called; A. latent heat B. subcooling C. superheat D. specific heat - C. superheat 4. A scroll compressor move refrigerant by means of; A. a piston B. an impeller C. vane and cam D. involute spirals - D. involute spirals5. The movement of heat by way of fluid (or air) is called; A. conduction B. convection C. radiation D. percussion - B. convection 6. The movement of heat through a solid object is called; A. conduction B. convection C. radiation D. compression - A. conduction 7. The standard unit for measuring the quantity of heat in a substance is; A. degrees Fahrenheit B. degrees Celsius C. degrees Rankin D. the British Thermal Unit (Btu) - D. the British Thermal Unit (Btu) 8. A refrigerant gives up heat when; A. it condenses B. it evaporates C. it is compressed D. it vaporizes - A. it condenses 9. Why must refrigerant in the suction line be slightly warmer than the saturation temperature? A. prevent liquid slugging of hte comp