Which of the following refrigerant has lowest specific volumes as vapor:

When Carbon dioxide is present in the condenser water, the water will turn ______with addition of bromothymol blue:

The _____ controls only the suction gas superheat at the evaporator outlet:

Magnesium alloys and Aluminum containing more than ______ of magnesium is not recommended for use in system containing Freon compounds in presence of water:

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

Acetylene must be used to pressurize a refrigeration system:

As the condensing temperature increases, centrifugal compressor capacity _______ :

The lower the molecular weight of the refrigerant, the ______ the hole must be required for the refrigerant to escape:

Which of the following type of refrigerant cool substances by absorbing their sensible heats:

_____ is the weight of the moisture in the unit mass of dry air:

Screw compressor is a positive displacement compressor:

When the liquid level is below the sensing bulb, the vapor surrounding the bulb carries away the heat from the electric heater at relatively ____ rate:

Which of the following property is desirable for a refrigerant:

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

A worker adversely affected by fluorocarbon vapors should be treated with adrenaline (epinephrine):