Watertube Boilers Chapter 1

Question 1

1.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, 3
B. 2, 3, 4
C. 3, 4, 5
D. 1,2, 4
E. 1, 2, 3, 5

Answer 1

D. 1,2, 4

“Residential,Commerical,Domestic”

Question 2

2.The "longitudinal drum boiler" is a \_\_\_\_\_ combustion gas pass boiler.
A. One
B. Two
C. Three
D. Four
E. Five

Answer 2

C. Three

longitudinal drum boiler has TWO (2) combustion

Question 3

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

Answer 3

E. Threaded connections

Question 4

4.The combustion chamber of the "serpentine watertube" boiler is:
A. Located between the water tubes
B. Located below the water tubes
C. Surrounded by the water tubes
D. Downstream of the windbox
E. Stoker fired

Answer 4

B. Located below the water tubes

Question 5

5.The advantages of bent tube boilers include:
1. Bent tubes allowed for better heat transfer
2. Much refractory was eliminated
3. Limitations on design and configuration
4. The tubes could form flue gas baffles
A. 1, 2
B. 2, 3, 4
C. 3, 4
D. 1, 2, 3
E. 1,2,3,4

Answer 5

E. 1, 2, 3,4

Question 6

6.The “D” type boiler is constructed with \_\_\_\_\_ drums.
A. One
B. Two
C. Three
D. Four
E. Five

Answer 6

B. Two

Question 7

7.One of the “advantages” of the “serpentine watertube boiler” is that the design it:
A. Decreases the height of the boiler
B. Increases the water capacity of the boiler
C. Eliminates expansion and contraction stress
D. Produces a smaller foot print
E. Is capable of very high steam pressures

Answer 7

C. Eliminates expansion and contraction stress

Question 8

The “O” type boiler is constructed with \_\_\_\_\_ drums.
A. One
B. Two
C. Three
D. Four
E. Five

Answer 8

B. Two

Question 9

The “A” type boiler is constructed with \_\_\_\_\_ drums:
A. One
B. Two
C. Three
D. Four
E. Five

Answer 9

C. Three

Question 10

10.Which of the folllowing are advantages of packaged watertube boilers?
1. Ease of installation
2. One supplier supplies all components
3. Built with all of the necessary fittings
4. Warranties and similar items are easy to deal with
A. 1, 2
B. 2, 3, 4
C. 3, 4
D. 1, 2, 3, 4
E. 1, 2, 4

Answer 10

D. 1, 2, 3, 4

Question 11

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

Answer 11

C. 1, 4, 5

Question 12

12. Water circulation in the longitudinal drum boiler is created by:
A. The water circulation pump
B. Higher density feedwater
C. Higher density boiler water
D. Lower density feedwater
E. Direction of feedwater supply

Answer 12

B. Higher density feedwater

Question 13

The “O” type boiler is constructed with \_\_\_\_\_ drums.
A. One
B. Two
C. Three
D. Four
E. Five

Answer 13

B. Two

Question 14

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

Answer 14

A. Radiant