Typically _____ efficiency loss occurs with every 40°F increase in stack temperature of water tube boiler:

Which of the following compressor is not a positive displacement compressor:

In cooling towers, total heat transferred is the sum of which of the following:

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

Sight glass is located in the _____

The efficiency and power factor of the motor varies with which of the following:

The highest Annual Fuel Utilization Efficiency (AFUE) units available are slightly less than _____ efficient:

Which of the is used to smooth out the variations in the power source current:

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

When the voltage given to charged capacitor is removed, capacitor discharges in the _____ to the supply voltage:

Megger test for motors and wiring is carried out to determine:

Excessive liquid line length and/or lift can cause which of the following:

In which of the following boiler water is circulated through the boiler tubes:

Boiler efficiency is a function of which of the following parameters:

Moisture remaining in a system following evacuation: