Which one of the following is known as the line that connects between the metering device and the evaporator:

Which of the following is used to remove the trapped air from a low pressure system from the top of the condenser:

The larger the diameter of the center hose, higher will be evacuation time of the refrigerant from the system:

Which of the following gas is used for purging or pressurizing a refrigerant or air conditioning system:

Turning the TXV valve stem in _______ direction increases super heat:

The tubes of the indoor evaporator coils are made of which of the following:

Miscibility is the ability of the fluid to:

Which of the following compressor uses pistons, cylinders and valves to compress the refrigerant gas:

1 kilo watt  = ______ Btu

Which of the following law states that the total pressure of a confined mixture of gases is the sum of pressures of each of the gases in the mixture:

Relays and contactors are ____ control switches:

Which of the following circuit does not have multiple paths for current flow:

Dual voltage three phase motor has _____ number of terminals

______ is the process in which solid turning directly into a vapor without going through the liquid phase:

At 32°F, 1 lb of ice can be changed to 1 lb of water by adding ____ Btu

In Fire tube boiler, which of the following pass through the tubes:

Most of the heat transfer from the heat exchanger is by which of the following: