Practice Questions builder Questions and Answers.

Practice Questions builder Questions and
Answers.

Globe Valve - (correct answer) - A valve that should be used for throttling is a?
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30-70 - (correct answer) -
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what is the acceptable range for residual sodium sulfite in the boiler maintain?
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146,000 - (correct answer) - what is the BTU content of a Gallon of #4?
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Brine - (correct answer) -
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what does a zeolite water softener system use as a means of regeneration?
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Backwash, - (correct answer) - mn mn mn mn




what are the steps for a Zeolite rejuvenation water softener process?
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Condenser - (correct answer) - mn mn mn mn




Where is medium temperature liquid found in a refrigeration cycle ?
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Discharge line of the compressor - (correct answer) -
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Where is high temperature vapor found in a refrigeration cycle?
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Diagonal Stays - (correct answer) -
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what stays are used to support the burner chamber in a scotch marine boiler?
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Grounding Conductor - (correct answer) -
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What wire connects all components of a system to physical ground or water pipe?
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By opening the quick opening valve first and closing it last - (correct answer) -
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high pressure boilers equipped with a quick opening valve and a slow opening valve are blown do
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every 8 hours (once a shift) - (correct answer) -
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How often should the water level in the boiler be checked over a 24 hour period?
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Annually - (correct answer) - How often is the high limit switch on a boiler tested?
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Every 8 hours (once a Shift) - (correct answer) -
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How Often is an external inspection of a boiler performed?
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Shutdown Burner - (correct answer) - What is the first thing to do when shutting down a Boiler?
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, Every 8 hours (once a shift) - (correct answer) - How often should the flow control be blown down
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Every 8 hours (once a shift) - (correct answer) - How often should the low level cutoff be tested
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To Lubricate components within the refrigeration cycle - (correct answer) -
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why is oil added to the refrigerant
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the same system or other system owned by the same person with restriction - (correct answer) -
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Refrigerant that is recovered can be returned to?
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Stamp or Approval - (correct answer) -
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Data printed on the equipment nameplate includes the manufacturer, model, serial number and _
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__________?

1 BTU - (correct answer) - How many BTU's does it take to rise 10lbs of steam from 40° to 41°?
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every 8 hours (once a shift) - (correct answer) -
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How often should permits be required when working on a Boiler?
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3 : over pressure, Over heating, & Fire side Explosions - (correct answer) -
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How many things do safety controls protect against?
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Calcium Sulfate & Magnesium Carbonate - (correct answer) -
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What chemical compounds in water cause permanent Hardness?
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Sodium sulfite & hydrazine - (correct answer) - What chemicals are used to Combat Corrosion
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Bases - (correct answer) -
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You have boiler water that is found to have PH of 5, what compound do you add to neutralize
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Calcium carbonate & magnesium Carbonate - (correct answer) - what produces soft scale?
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Neutralizing amines - (correct answer) - mn mn mn mn mn




with normal oxygen and Low alkalinity, what is added to the boiler water?
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Silica - (correct answer) - What is hard forming Scale
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Combined Phosphate treatment - (correct answer) - what chemicals are used to combat scale
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Nitrogen - (correct answer) - What compound does not produce heat?
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Chlorine - (correct answer) -mn mn mn mn




With Hydroxide present and normal Oxygen levels which chemical will cause problems in a syste
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Tube Rattler/Vibrator - (correct answer) -
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What mechanical device is used to remove scale from Fire Tubes?
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