precise detailed solutions ||\\//|| ||\\//||
A ______ fuse is necessary for a circuit with a load of 21,000 watts and a voltage of 220
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volts.
A. 100 ||\\//||
B. 150
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C. 175 ||\\//||
D. 200 ||\\//||
A. 100 amps. Note: V = IR Therefore I = V/R 21,000 amps /220 volts = 95 amps
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,At 0 psig, how many BTU's are required to change 1 lb of water at 212F to steam?
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A. 144 ||\\//||
B. 180 ||\\//||
C. 970 ||\\//||
D. 1190 ||\\//||
C. 970 BTU ||\\//|| ||\\//||
3 multiple choice options
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Radiation is: ||\\//||
A. the movement of liquids or gases created by a temperature difference.
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B. Heat transfer by direct molecular contact
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C. the weight of a substance compared to unity
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D. Heat transfer by waves
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D. Heat transfer by waves
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Sensible heat is: ||\\//|| ||\\//||
A. An established relationship comparing any substance to the heat content of water.
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B. Heat quantity that can be felt or measured by a thermometer
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C. Heat quantity above the saturation point
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D. Measure of heat intensity
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B. Heat quantity that can be felt or measured by a thermometer
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,All steam lines should be pitched:
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A. In the direction of flow
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B. Back towards the boiler
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C. Level
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D. For convenience
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A. In the direction of flow
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Draw a simple picture of a Sterling Boiler. Label it.
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Describe the water flow through a Sterling Boiler ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Feedwater flows to 1) rearmost drum 2) down to the mud drum 3) up to middle drum 4) to ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
front drum through crossover pipes and 5) back down to mud drum
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Draw a picture of a Scotch Boiler. Label the firebox, combustion chamber, crown sheet,
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tubes, feed water inlet, steam outlet, stack, Economizer and Superheater.
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, Draw a picture of a Firetube Boiler. Label it.
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Draw a picture of a Locomotive Fire Tube Boiler. Label it.
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Increasing the pressure will have what effect on the boiling point of water?
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A. No change
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