Final quiz 1

1. Which refrigeration system uses a mechanical compressor to circulate the refrigerant?

• Thermoelectric System

• Vapor Absorption System

• Vapor Compression System

• Magnetic Refrigeration System

Which component is unique to the vapor absorption refrigeration system?

• Absorber

• Compressor

• Thermoelectric module

• Magnetic field generator

How does a thermoelectric refrigeration system create a cooling effect?

• By compressing and expanding refrigerant

• By using a heat exchanger and absorber

• By using magnets to manipulate temperature

• By passing electricity through special materials

Which refrigeration system is best suited for small portable coolers?

• Vapor Compression System

• Vapor Absorption System

• Thermoelectric System

• Water-Cooled System

A factory wants to use waste heat for cooling instead of electricity. Which refrigeration system should they use?

• Vapor Compression System

• Vapor Absorption System

• Thermoelectric System

• Air-Cooled System

What is the primary purpose of the HVAC system onboard ships?

• To regulate temperature, humidity, and air quality

• To control only humidity levels in all compartment

• To supply fresh water for cooling engine components

• To ensure the ship remains airtight at all times

Why is proper ventilation important in the engine room?

• To remove excess heat and harmful gases

• To increase pressure inside the engine room

• To prevent dust accumulation in air filters

• To reduce noise levels from the HVAC system

What is the main function of air conditioning in an HVAC system?

• To regulate engine fuel temperature for combustion

• To remove excess carbon dioxide from the air

• To increase airflow inside ventilation ducts

• To cool and dehumidify the air for comfort

How does the HVAC system help preserve perishable cargo?

• By sealing off cargo holds from external ventilation

• By constantly circulating fresh air from the engine room

• By increasing air pressure to remove moisture

• By maintaining a consistent temperature and humidity level

A marine engineer notices high humidity in crew quarters. What part of the HVAC system should be checked?

• Ventilation exhaust fans

• Humidifiers and dehumidifiers

• Engine cooling system

• Air filters in the fuel line