CSLB C20 TRADE TOUGHER EXAM QUESTIONS AND ANSWERS 100- PASS

CSLBC20TRADETOUGHER EXAM QUESTIONS AND v v v v v v




ANSWERS 100% PASS
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Duct systems should be installed according to
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The type of flue pipe used on gas 80% standard furnace venting systems serving gas fired systems - correct
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answer-Type B-Vent
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Which type of gauge would you use for very high vacuums? - correct answer-McLeod type gauge
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How many BTUs are equal to one kilowatt hour - correct answer-3,414 BTU
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When adjusting gas fired furnaces above 2000 feet, the BTU per hour input should be reduced 4% for each
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feet above sea level. - correct answer-4% for every 1,000 feet v v v v v v v v v v




How are residential furnace blower motors classified - correct answer-by starting method
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What is the equation for determining heat loss through a material - correct answer- Q
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= U times A times TD
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What is the overfire rating on a small draft hood - correct answer-0.02 inches
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what is the equation for determining minimum size air supply for a blower type furnace -
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correct answer-2 divided by 1000 times the BTU of the furnace
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what is the equation for determining minimum size air supply for a gravity type furnace -
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correct answer-7 divided by 1000 times the BTU of the gravity furnace
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the type of bub that measures evaporative cooling - correct answer-wet bulb
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the heating value of natural gas is - correct answer-1100 BTU per cubic foot
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