Electrician Practice Tests

What will happen if the system is pressurized with oxygen or compressed air?

CFC’s are lighter than air.

One chlorine atom can break apart more than …………………. Ozone molecules

The compressor is located in …………… part of the refrigeration circuit?

The liquid boiling point in the closed loop system can be controlled by changing …………… above it.

A high pressure gauge in manifold gauge set is usually ………… in color.

When the air present inside the refrigeration circuit …

The process which removes the moisture and oil from and the refrigerant and chemically tests the refrigerant is

Refrigerant recovery equipment manufactured after ……………… must be certified and labeled by the EPA approved equipment testing agency to meet EPA standards

HFC refrigerant leak cannot be detected by following detector?

Which of the following refrigerant is drop-in substitute of R-12?

The speed of the evacuation depends on

For maximum security what should be done to the cylinder before disposal?

The suction line up to the compressor is iced up in air conditioning unit, what would be the indication?

The refrigerant recovered from refrigeration system …………….