Pressure drop in the refrigeration system is expressed in terms of:

Where a liquid line riser becomes necessary to connect to an evaporator located at higher level than the condenser, the pressure drop due to liquid lift will be high causing heavy flash in the liquid line:

Condensation inside a condenser occurs under which of the following conditions:

Inside the condenser or in the liquid line, when liquid is sub-cooled, then there is no change in pressure:

The compression ratio _______ when the evaporating temperature rises:

The volumetric efficiency of the compressor reduces as the evaporating temperature ______

Most of the CFCs refrigerants are not miscible with mineral oils:

The _______ of an oil is the temperature at which wax in the oil begins to precipitate from a mixture of 90% refrigerant and 10% oil by volume:

The ____ side float chamber is located between the condenser and evaporator:

______ valves are operated using an electomagnet consisting of a coil of wire placed on an iron spool which is fixed over the valve body:

Fluorocarbons decompose when exposed directly to high temperatures:

R-12 and R-22 have the highest specific volumes as vapors:

Acetylene must be used to pressurize a refrigeration system:

Which of the following blended refrigerant can be used to substitute for R-12:

At condenser refrigerant  changes from ______ to _______ :