Steam Boilers Module 15 Session 5 Flashcards
Oxygen and other non-condensable gases are separated from the feedwater \_\_\_\_\_\_\_\_\_\_\_\_. A. In the closed feedwater heater B. In the economizer C. In the open dearator feedwater heater D. By using steam traps
C. In the open dearator feedwater heater
The four systems required to operate a steam boiler are ____________.
A. Steam, exhaust, condensate, and return
B. Fuel, condensate, air, and return
C. Steam, feedwater, fuel, and draft
D. Steam, condensate, fuel, and draft
C. Steam, feedwater, fuel, and draft
In order to produce one pound of steam, it is necessary to evaporate A. 144 Btu B. 970.3 Btu C. 1 lb of water D. 3 lbs of water
C. 1 lb of water
Steam that has lost its heat and has turned back into water is referred to as \_\_\_\_\_\_\_\_\_\_\_\_. A. Returned steam B. Condensate C. Exhaust steam D. Reclaimed steam
B. Condensate
Steam is extracted from the turbine after it has passed through some of the turbine stages to ____________.
A. Reduce back pressure
B. Increase back pressure
C. Prevent excessive speed within the turbine
D. Be used for process work and heating
D. Be used for process work and heating
On a boiler burning low pressure gas, the volume (amount) of gas burned is controlled by the ____________.
A. Pressure-regulating valve
B. Pressure-reducing governor
C. Volume of air passing through the venturi tube
D. Manual reset valve
C. Volume of air passing through the venturi tube
When steam is superheated it has
A. A higher pressure, thus producing more work
B. A large volume
C. More heat energy, thus producing more work
D. A higher temperature and pressure
C. More heat energy, thus producing more work
Water from an open deaerating feedwater heater flows \_\_\_\_\_\_\_\_\_\_\_\_. A. To a closed feedwater heater B. To the boiler C. To the feedwater pump D. Directly to the sewer
C. To the feedwater pump
A safe and efficient boiler plant should include ____________ pump(s).
A. One steam and one electric feedwater
B. Two steam feedwater (reciprocating)
C. One steam turbine and one steam reciprocating
D. Two electric high-capacity feedwater
A. One steam and one electric feedwater
On the feedwater line near the boiler is a check valve and a stop valve. The valve closest to the shell of the boiler is the \_\_\_\_\_\_\_\_\_\_\_\_ valve. A. Check B. Stop C. Automatic nonreturn D. Gate
B. Stop
The open feedwater heater is located A. Above the feedwater pump(s) B. Below the feedwater pump(s) C. After the closed feedwater heater D. Before the feedwater heater
A. Above the feedwater pump(s)
Water weighs approximately \_\_\_\_\_\_\_\_\_\_\_\_ lb/ gal. A. 2 B. 6.4 C. 8.3 D. 10
C. 8.3
Coal stokers were developed because
A. All grades of coal could be burned
B. Coal is easy to burn
C. Coal has less sulfur than fuel oil or gas
D. Hand firing was inefficient in larger-sized boilers
D. Hand firing was inefficient in larger-sized boilers
On the fuel oil system, the purpose of the duplex strainers on the suction line between the tank and fuel oil pump is to ____________.
A. Isolate the system in the event of fire
B. Allow one strainer to be cleaned without securing the boiler
C. Remove water from the fuel oil
D. Prevent return flow to the tank
B. Allow one strainer to be cleaned without securing the boiler
Which type of fuel oil must be heated in order to be pumped? A. No. 2 B. No. 4 C. No. 5 D. No. 6
D. No. 6
