CPM Pre-Test

In a shell and saving accessory to a refrigeration system

• A. Black iron
• B. Galvanized steel
• C. Muntz or admiralty metal
• D. Copper

The temperature at which moisture in the air starts to condensate is known as:

• A. Relative humidity
• B. Dew point
• C. Eutectic point
• D. Wet – bulb temperature

Condensing mediums must be

• A. A liquid
• B. gas
• C. non - corrosive
• D. in the right temperature range

The capacity if an evaporative condenser will:

• A. Increase as the entering air wet – bulb temperature decreases
• B. Increase as the entering air wet – bulb temperature increase
• C. Not change with changes in the entering air wet bulb temperature
• D. Decrease as the entering air wet – bulb temperature decreases

Gas condenses in the inner tube of a(n)

• A. Atmospheric condenser
• B. Double – pipe condenser
• C. Shell and tube condenser
• D. Evaporative condenser

Natural – draft condensers are most frequently found in

• A. Residential cooling
• B. Room air conditioners
• C. Household refrigerators
• D. Large industrial plants

The capacity of an evaporative condenser is greatest on a

• A. Warm day
• B. Low – humidity day
• C. Cool day
• D. Rainy day

The capacity of an evaporative condenser depends on

• A. Fan horsepower
• B. Entering – air wet bulb temperature
• C. The temperature of the entering air
• D. The amount of heat leaving air is capable of absorbing

The following does not increase the capacity of water – cooled condenser:

• A. Increasing the water flow
• B. Reducing the water temperature
• C. Decreasing the ambient temperature
• D. None of the above

Open shell and tube condensers are mainly used with:

• A. A cooling tower of spray pond
• B. Dirty water
• C. Chemically treated water
• D. Hard water