Tenses Exercise

Fill in the blanks with an appropriate tense form.

An ‘air conditioner’ is an electrical device or appliance that ………………… (cool / cools / is cooling) down or removes the heat from the air in an enclosed space by utilizing a refrigeration cycle. The air conditioning system ………………….. (makes / made / is made) up of a compressor, a condenser, an evaporator, refrigeration lines and a couple of sensors. The compressor is the heart of your a/c system which ……………………. (take / took / is taking) the refrigerant (the gas) and …………………… (pressurize / pressurizes / pressurized) it so it will cool the air. It is run by an engine belt.

An air-conditioning system …………………….. (use / uses / using) a refrigerant gas like Freon to cool the air. Freon ………………….. (placed / is placed / places) in a sealed system and is then pressurized using a compressor. As it is pressurized, it ……………………. (got / gets / is getting) hot by absorbing the heat around it.

Answers

An ‘air conditioner’ is an electrical device or appliance that cools down or removes the heat from the air in an enclosed space by utilizing a refrigeration cycle. The air conditioning system is made up of a compressor, a condenser, an evaporator, refrigeration lines and a couple of sensors. The compressor is the heart of your a/c system which takes the refrigerant (the gas) and pressurizes it so it will cool the air. It is run by an engine belt.

An air-conditioning system uses a refrigerant gas like Freon to cool the air. Freon is placed in a sealed system and is then pressurized using a compressor. As it is pressurized, it gets hot by absorbing the heat around it.