Test 4 Multiple Choice Flashcards
As steam pressure in boiler increases there is a corresponding increase in the_____
Temperature
Superheat
Volume of steam
Boiler horsepower
Temperature
In a watertube boiler the heat and gases of combustion pass_____
Through the tubes
Around the tubes
Around the tubes
Stays and braces are needed to prevent bulging in______
Any watertube boiler
A high pressure watertube boiler
A firetube boiler high or low pressure
A firetube boiler high or low pressure
The_____boiler was developed to provide steam at higher pressure
HRT
Firetube
Watertube
Combination
Watertube
If it is necessary to test relieving capacity of a safety valve______
An accumulation test is put on the boiler
A hydrostatic test is put on the boiler
The boiler must be secured and off line
An accumulation test is put on the boiler
A whistle valve is used to_____
Indicate is 12:00 noon
Indicate a shift change
Warm the operator of high or low water
Warm the operator of high or low water
The pressure at the base of a vertical foot of water is______psi
- 433
- 3
- 7
- 5
0.433
Steam separators work on the principle of
Potential energy
Kinetic energy
Trapping steam and letting water through
Changing the direction of the steam flow
Changing the direction of the steam flow
The dry pipe is located in the_____
Upper part of the steam and water drum
Superheater outlet header
Main steam line
Line before the turbine throttle
Upper part of the steam and water drum
Saturated steam is steam at_____
A higher temperature than its corresponding pressure
Its corresponding temperature and pressure
A dry state
The superheater outlet
Its corresponding temperature and pressure
Soot blowers are mainly found on______
Waterwalls
Watertube boilers
Firetube boilers
Main breeching
Watertube boilers
The main steam stop valve should be gate valves because they_____
Can restrict the flow of steam
Can be used as throttling valves
Do not have to be fully open
Offer no restriction to the flow of steam
Offers no restrictions to the flow of steam
When the boiler is equipped with hand operated main steam stop valves. To cut the boiler in on the line the steam pressure on the incoming boiler should be_____
Slightly higher than line pressure
Equal to line pressure
Slightly lower than line pressure
Makes no difference pressure will equalize
Slightly lower than line pressure
During boiler warm-up to remove any condensate trap between the two boiler to stop valves
Free blowing drain should be open
Superheaters drain should be open
Boiler vent should be open
Free blowing drain should be open
The maximum size of the bottom blowdown line and the surface blowdown line is____”
1 1/2
2 1/2
3
2 1/2
