Chapter 1 Flashcards
The main advantage of a packaged type boiler is its:
A) Speed of construction
B) Easier to ship
C) Size
D) Low cost
D
Shop Assembled Watertube Boilers are:
A) Usually larger than a packaged boiler
B) Usually assembled at the shop
C) Usually smaller than a packaged boiler
D) the same as a packaged boiler
A
The boiler rating as expressed in units of kilowatts of a boiler is:
A) One square meter of heating surface equals 5 KW
B) One square meter of heating surface equals 20 KW
C) One square meter of heating surface equals 10 KW
D) Two square meters of heating surface equals 10 KW
C
The boiler rating as expressed in units of kilowatts for an Electric boiler is:
A) One square meter of heating surface equals 20 KW
B) The maximum Kilowatt rating of the heating element
C) The maximum heating value in the fuel per hour
D) The maximum Kilowatt rating of the heating surface
B
Four factors that affect natural circulation in a boiler are:
A)
The height of the steam drum above the bottom drum
The amount heat applied to convection section of the furnace
Operating pressure of the boiler
The Diameter of the tubes in the tube wall
B)
The height of the steam drum above the bottom drum
The amount heat applied to the tubes
Feed water pressure
The Diameter of the tubes in the tube wall
C)
The height of the steam drum above the bottom drum
The amount heat applied to the tubes
Operating pressure of the boiler
The cleanliness of tubes
D)
The height of the steam drum above the bottom drum
The amount heat applied to the tubes
Operating pressure of the boiler
The Diameter of the tubes in the tube wall
C
The three types of water boilers are:
A) A,D,H
B) A,B,C
C) C,D,O
D) A,D,O
D
Which of the following equipment items is not part of a steam generating unit?
A) Deaerator
B) Boiler
C) Super heater
D) Economizer
A
The function of the superheater is to:
A) Remove sensible heat from the steam
B) Decrease the temperature of the steam below saturation point
C) Add latent heat to the team
D) Increase the temperature of the steam above saturation point
D
In a large steam generating unit draft is normally generated by:
A) Induced draft fan
B) Balanced draft, 2 fans, both induced and forced
C) Natural draft
D) A forced draft fan
B
The temperature in the furnace of a steam generating unit is:
A) 1750 oC
B) 2000 oC
C) 1100 oC
D) 1650 oC
D
