Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Book 1 - 5th Power Engineering > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

One reason that low capacity water tube boilers are seldom used for low pressure heating is that they:
1. require less supervision
2. Cost less
3. Have flue gas flowing inside the tubes
4. Require more supervision for water treatment

A
  1. Require more supervision for water treatment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The heating surface of a copper-tubular boiler consists of :
1. Drums and headers
2. A continuous copper tube
3. Straight firetubes
4. Bent tubes attached to drums

A
  1. A continuous copper tube
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The type of watertube boiler that has an upper drum and two lower drums is an ________ type
A. O
B. B
C. A
D. D

A

C. A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

An advantage of a packaged boiler would be
A. Ease of installation
B. Construction entirely on site
C. It can be built to and height
D. No water treatment required

A

A. Ease of installation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The purpose of attaching “fins” to watertubes is
A. provide swirling action of flue gases
B. Increase heating surface
C. Increase strength of the tubes
D. provide for better circulation

A

B. Increase the heating surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In order to produce 1 kilogram of steam, it is necessary to evaporate how much water?
A. 1 kilogram of water
B. 10 kilograms of water
C. 100 kilograms of water

A

A. 1 kilogram of water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why do tubular boilers heat up more rapidly than other boilers?
A. They have many flue passes
B. They are forced circulation
C. They do not have drums it headers
D. They are oil fired

A

C) They do not have drums or headers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Watertube boilers are approved for high pressure steam only
A. True
B. False

A

B. False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

As steam pressure in a boiler increases, there is a corresponding increase in the steam ____________
A. Temperature
B. Superheat
C. Boiler horsepower
D. Volume of steam

A

A. Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

One reason the watertube boiler is sometimes called the “safety boiler”
A. It has a relatively low water content
B. Approved for low pressure heating only
C. Always supervised by power engineer
D. Reacts well to water treatment

A

A. It has a relatively low water content

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the three types of head used in construction of watertube boiler drums?
A. Shelled, dished, curved
B. Curved, flat, dished
C. Flat, concave, convex
D. Flat, stayed, elliptical

A

B.bCurved, flat, and dished

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Furnace walls in a modern watertube boiler absorb what?
A. Expansion heat
B. Radiant heat
C. Refractory heat
D. Kinetic heat

A

B. Radiant heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In a watertube boiler, the heat and gases of combustion pass where?
A. Through downcomers
B. Around outside of the tubes
C. Through secondary pass
D. Inside of tubes

A

Around the outside of the tubes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the heads of a watertube boiler
A. Steel plates that close off the ends of the boiler drum
B. Pressure surges caused by priming
C. Barriers in the fireside to direct flue gases
D. Tube sheets in the boiler room

A

A. Steel plates that close off the ends of the boiler drum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The parts of the boiler that have gas combustion on one side and water or steam on the other side are known as the?
A. Heating surface
B. Firetubes
C. Cast iron sectional
D. Water column

A

A. Heating surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The advantages of a bent tube boiler include:
A - Bent tubes allow for better heat transfer
B - much refractory was eliminated
C - limitations on design and configuration
D - tubes could form flue gas passages
E - A & B
F - A, B & D

A

F - A, B & D

17
Q

The copper tubular boiler finds application in :
1 - residential hot water heating systems
2 - commercial hot water heating systems
3 - industrial hot water heating systems
4 - domestic hot water supply
5 - High pressure steam production

A

1,2&4

18
Q

The longitudinal drum boiler is a _______combustion gas pass boiler
A. Four
B. Five
C. Two
D. Three
E. One

A

D

19
Q

The lower tubes of the serpentine watertube boiler are exposed to the _________ heat from the fire
A. Radiant
B. Conduction
C. Convection
D. Radiant and conduction
E. Convection and conduction

A

A

20
Q

One of the advantages of the serpentine watertube boiler is that the design
A. increases the water capacity of the boiler
B. Eliminates expansion and contraction stress
C. Is capable of very high steam pressure
D. Decreases the height of the boiler
E. Produces a smaller footprint

A

B

21
Q

Which of the following are advantages of packaged watertube boilers?
1. Ease of installation
2. One supplier supplies all components
3 . Built with all necessary fittings
4. Warranties and similar items are easy to deal with

A

1,2,3,4

22
Q

The tubes of the serpentine watertube boiler are connected to the upper and lower headers by:
A. Silver solder
B. Welding
C. Four bolt flanges
D. Crosby clips
E. Threaded connections

A

E

23
Q

The D type boiler is constructed with ______ drums
A. Five
B. One
C. Two
D. Three
E. Four

A

C

24
Q

The types of construction used with packaged boilers are.
1. A
2. B
3. C
4.D
5.O

A

1,4,5

25
Q

The O type boiler construction with _________drums
A.four
B. Two
C. One
D. Three
E. Five

A

B

26
Q

A mud drum is a part of
A. And electric boiler
B. An HRT boiler
C. A watertube boiler
D. A firetube boiler

A

C. A watertube boiler

27
Q

When the furnace floor of a watertube boiler contains tubes, they are protected with refractory tiles because:
A. The steam generated would flow along the top of the tube and not act as a coolant the way water does
B. They must form a gas tight membrane in the combustion chamber
C. They are part of the waterwalls
D. They would sag under pressure

A

A. The steam generated would flow along the top of the tube and not act as a coolant the way water does

28
Q

The water line in a boiler is:
A. Tubes that contain water in the boiler
B. Pipe that delivers feed water to the boiler
C. Pipe that delivers makeup water into the boiler
D. The actual water level in the boiler

A

D. The actual water level in the boiler

29
Q

The tubular watertube boiler relies on _____for circulation
A. Circulating pump
B. Flue gas density
C. A blower
D. Water density

A

A. Circulating pump

30
Q

Baffles are designed to direct the gases of combustion so that they come into close contact with the __________
A. Feed water
B. Superheater
C. Boiler heating surface
D. Combustion chamber

A

C. Boiler heating surface

Book 1 - 5th Power Engineering (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions