1) As defined in the course materials, dew point is

Select one:

a. the temperature at which the air cools down to reach condensation.

b. the temperature at which air conditioning changes condensation to water vapor.

c. the time of a day when water droplets appears on mirrors.

d. the temperature at which the ice may change its state to liquid.

2) According to the course materials, the HVAC equipment that works on refrigeration cycle principles and can deliver either heating or cooling, depending on the direction of the refrigerant flow is called:

Select one:

a. thermal unit

b. decentralized unit

c. heat pump

d. chiller

3) If a centralized heating systems provides heat through pipes, it is a

Select one:

a. hot air based system

b. hot water based system

c. cold water based system

d. cold air base system

4) Tilted security cameras called PTZs are useful in

Select one:

a. serving as solid police investigation evidence

b. stopping violent crimes

c. monitoring movements in a certain area

d. serving as a contact alarm, alerting the police about the crime