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MA 2nd CLASS FIREMAN’S PRACTICE EXAM 106 QUESTIONS AND VERIFIED ANSWERS 2023/2024 GRADED A+
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MA 2nd CLASS FIREMAN’S PRACTICE EXAM 106 QUESTIONS AND VERIFIED ANSWERS GRADED A+
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MA 2nd CLASS FIREMAN’S PRACTICEEXAM 106 QUESTIONS AND VERIFIED
ANSWERS 2023/2024 GRADED A+
At 0 PSIG, how many BTU are necessary to change 1 lb of water at 212
degrees Fahrenheit into 1 lb of steam?
• 144
• 180
• 970
• 1,190 - ANSWER- c) 970
Radiation is
• the movement of liquids or gases created by a temperature difference.
• the transfer of heat by direct molecular contact.
• the weight of a substance compared to unity.
• a form of heat transfer by waves. - ANSWER- d) a form of
heat transfer by waves.
,Steam at 100 PSI and 400 degrees Fahrenheit is
• saturated.
• wet.
• superheated.
• none of the above. - ANSWER- c) superheated
Which of the following most closely defines sensible heat?
• An established relationship comparing any substance to the
heat content of water
• Heat quantity that can be felt or measured by a thermometer.
• Heat quantity above the point of saturation
• Measure of heat intensity. - ANSWER- b) Heat quantity that can
be felt or measured by a thermometer
What is required to raise the temperature of 1 lb of water from 32
degrees to 212 degrees Fahrenheit?
• 144 Btu
• 180 Btu
• 970.3 Btu
• Saturated heat - ANSWER- b) 180 Btu
Increasing the pressure has what effect on the boiling point of water?
• No change
• Temperature will be lowered
• Temperature will be raised
,• Temperature will increase 2 degrees Fahrenheit for every PSI
- ANSWER- c) Temperature will be raised
Heat absorbed by water when it changes from liquid to steam at the
boiling point is called
• sensible heat.
• latent heat.
• specific heat.
• superheat - ANSWER- b) latent heat
Heat may be transferred in how many ways?
• One
• Two
• Three
• Four - ANSWER- c) Three
A boiler horsepower is defined as
• 970.3 Btuh.
• total heating surface times the factor of evaporation.
• evaporation of 34.5 lb of water from and at 212 degrees
Fahrenheit per hour
• evaporation of 34.5 lb of water from and at 212 degrees Fahrenheit
per 8 hours. - ANSWER- c) evaporation of 34.5 lb of water from and
at 212 degrees Fahrenheit per hour
, A boiler's steam pressure gauge reads 150. What is the absolute
pressure?
• 14.7
• 135.3
• 150
• 164.7 - ANSWER- c) 150
What does 212 degrees F equal on the Celsius scale?
• 32
• 100
• 180
• 970.3 - ANSWER- b) 100
One boiler horsepower is equal to how many Btu?
• 970.3
• 33,472
• 125,000
• One therm - ANSWER- b) 33,472
A British thermal unit is
• the amount of heat needed to raise one pound of water one degree F
• the amount of heat needed to raise one pound of steam one degree F
• a unit of temperature measurement.
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