Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 4
Steam System Accessories
| Question | Answer |
|---|---|
| A line desuperheater is used in conjunction with a ? a. steam trap b. draft system c. condensate tank d. pressure-reducing station | d. pressure-reducing station |
| Some plants are equipped with a ? instead of a blowdown tank a. surge tank b. blowdown separator c. pressurizing tank d. desuperheater | b. blowdown separator |
| If a steam has as quality of ? % it is 98% vapor and contains 2% water a. 2 b. 49 c. 96 d. 98 | d. 98 |
| In a heat recovery system, the ? regulates the flow of makeup water to the flash economizer a. solenoid valve b. transfer pump c. proportioning valve d. float thermostatic steam trap | c. proportioning valve |
| A 10 degree F rise in feedwater temperature produces approximately ? % savings in fuel a. 1 b. 10 c. 15 d. 20 | a. 1 |
| A throttling calorimeter is used to directly measure the ? a. temperature of steam b. moisture content in steam c. rate of heat transfer d. flue gas temperature | b. moisture content in steam |
| The flow of steam maintained through a superheater should never be less than ? % of boiler capacity a. 5 b. 15 c. 25 d. 100 | c. 25 |
| When water is boiling, the water in the boiler and steam above it are at ? a. lower temperature and pressure b. a lower temperature and higher pressure c. the same temperature and pressure d. a higher temperature and pressure | c. the same temperature and pressure |
| Water hammer is caused by ? and can lead to a line rupture a. mixing steam and water b. removing condensate from steam lines c. starting and stopping a feedwater pump d. bringing heat up to the saturation point | a. mixing steam and water |
| A steam trap usually has ? installed on the inlet line a. thermostat b. brewing kettle c. steam strainer d. pressure gauge | c. steam strainer |
| Steam turbines require ? steam a. extraction b. desuperheated c. saturated d. dry superheated | d. dry superheated |
| The air ejectors on the condenser of a steam turbine are used to remove air and other noncondensable gases from the ? a. tubes b. condenser c. steam and water drum d. feedwater surge tank | b. condenser |
| Boilers operating at ? psi or more are required to have two bottom blowdown valves mounted on the same blowdown line a. 15 b. 40 c. 100 d. 400 | c. 100 |
| When ? fills an inverted bucket steam trap, the bucket loses buoyancy and sinks to open the discharge valve a. air b. steam c. sludge d. condensate | d. condensate |
| Failure to maintain steam flow will result in ? superheater tubes a. corrosion of b. scale build up in c. condensate build up in d. overheating of | d. overheating of |
| Watertube boilers can be fitted with ? to increased the heat content of the steam a. turbines b. superheaters c. deaerators d. steam traps | b. superheaters |
| The bellows of a thermostatic steam trap is usually filled with an ? and water solution to increase the sensitivity of the trap a. salt b. ammonia c. alcohol d. carbon dioxide | c. alcohol |
| Although the condensate tank is vented, it is possible to have a pressure buildup caused by ? a. leaking steam traps b. water hammer c. reduced heat transfer d. failed safety valves | a. leaking steam traps |
| According to the ASME code, is the MAWP exceeds ? psi, the blowdown lines and fittings must be composed of materials suitable for the temperature and pressures allowed a. 15 b. 100 c. 125 d. 400 | c. 125 |
| A steam trap can be tested with an ? to determine if it is working properly a. pressure gauge b. ultrasonic device c. ball float d. all of the above | b. ultrasonic device |
| In large steam boiler plants a ? is necessary to provide the extra capacity required to handle changing loads and peak flows of condensate a. flash tank b. overflow trap c. surge tank d. open feedwater heater | c. surge tank |
| A ? steam trap is a steam trap that has a single movable disc that rises to allow the discharge of air and cool condensate a. thermodynamic b. thermostatic c. inverted bucket d. variable orifice | a. thermodynamic |
| Some ? moisture separators automatically open and close because they use a wax that expands and contracts with temperature changes a. impulse b. inverted bucket c. thermodynamic d. variable orifice | d. variable orifice |
| The raw makeup water system generally has a float chamber located at the ? water level in a surge tank a. minimum b. normal operating c. maximum d. all of the above | a. minimum |
| Transfer pumps are used to transfer the mixture of ? from a surge tank to the deaerator or directly to the boiler feedwater pumps a. air and gases of combustion b. condensate and raw makeup water c. steam and salt d. raw makeup water and soot | b. condensate and raw makeup water |
Created by:
zmos89