Which of the following insulation material have low thermal conductivity:

Which of the following pressure is required in the conditioned space to prevent the infiltration of outside air:

In electronic filter, the electrical field ionizes the dust to a _______ charge:

Air velocity pressure in a duct system is directly proportional to the:

Which of the following material is used for fabrication of duct for low weight applications:

In centrifugal fans, the airflow at the fan outlet is ______ to the axis of rotation:

Accumulator is located in liquid line of the refrigeration system and helps in preventing liquid flood-back:

Thermostatic Expansion Valve (TEV) is a temperature control device:

The evaporator size shall be selected based on _______ to be handled:

Watt-hour meter records which of the following power:

Transformers are rated in which of the following units:

Which of the following is used for power factor correction:

Smaller the diameter of pipe _____ will be the pressure drop:

Water expands about _____ as it heats from room temperature to near boiling:

A pound of steam, at atmospheric pressure, occupies over _____ times more space than water:

Well designed burners firing gaseous and liquid fuels operate at excess air levels of _____ :