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10 Cards in this Set
- Front
- Back
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Boiler water legs: 1) Surround the furnace entirely 2) Support the boiler on concrete piers 3) Increase the heating surface 4) Make waterside maintenance easier 5) Make water treatment less critical |
3) Increase the heating surface |
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The steam and water spaces of a cast iron sectional boiler are connected by: 1) Push nipples 2) Tie nipples 3) Hydraulic jacks 4) Steel studs 5) Tie rods |
1) Push nipples |
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A cast iron boiler disadvantage is: 1) It is subject to corrosion 2) Its high ductility 3) Its pressure limitations 4) Its difficult assembly 5) Its extremely high cost |
3) Its pressure limitations |
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The steam and water spaces of a cast iron sectional boiler are held together by: 1) Push nipples 2) Steel studs 3) Cast iron pipes 4) Push studs 5) Tie rods |
5) Tie rods |
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Heating boilers attain maximum efficiency only when they are operated: 1) Intermittently at half load 2) Continuously at full load 3) Continuously at half load 4) Continuously at 75% of the load 5) Intermittently at 90% of the load |
2) Continuously at full load |
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Modular cast iron boiler water flow is: 1) Intermittent, occurring only while the unit is firing 2) Always vertically upwards 3) Connected in series 4) Continuous through all modules 5) Done without the use of headers or manifolds |
4) Continuous through all modules |
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Most low capacity cast iron boilers: 1) Can withstand higher pressures 2) Cannot be site assembled 3) Are factory assembled as packaged units 4) Require special foundations 5) Will pass through standard size doorways |
5) Will pass through standard size doorways |
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To prevent flue gases from escaping in a cast iron sectional boiler, the spaces between the sections are sealed with high temperature: 1) Putty 2) Plastic insulation 3) Asbestos rope 4) Foam insulation 5) Silicon chalking |
3) Asbestos rope |
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In a vertical sectional boiler, the sections are placed: 1) 45° to each other 2) Side by side 3) One above the other 4) 90° to each other 5) 180° to each other |
2) Side by side |
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A modem is a device that: 1) Stores bits of information into groups of eight called bytes 2) Allows the CPU to perform more than one task at a time 3) Converts analog signals to digital 4) Converts digital signals to analog signals 5) Allows the computer to communicate over analog lines |
5) Allows the computer to communicate over analog lines |
