Steam Boilers Tech Check 5

Question 1

Burning a fuel releases

A. solar energy
B. hydrogen gas
C. heat energy
D. none of the above

Answer 1

C. heat energy

Question 2

A clogged vent line on a fuel oil tank being filled with fuel oil could result in a

A. loss of suction
B. pressure buildup, which would cause an oil spill
C. loss of pressure
D. no vents are allowed on fuel oil tanks

Answer 2

B. pressure buildup, which would cause an oil spill

Question 3

A high suction line on a fuel oil tank is used when

A, the tank is full
B. the tank is low on fuel
C. signs of sludge and water are evident in the tank
D. changing over tanks

Answer 3

C. signs of sludge and water are evident in the tank

Question 4

The purpose of the fuel oil return line is to

A. circulate fuel oil during warm-up
B. return fuel oil that bypasses the burner
C. return fuel oil from the relief valve
D. all of the above

Answer 4

D. all of the above

Question 5

In both steam and air atomizing burners, atomization is accomplished

A. live steam and air
B. high fuel oil pressure
C. the sprayer plate
D low temperature, high pressure fuel oil

Answer 5

A. live steam and air

Question 6

In a low pressure gas burner, a shuts off the gas supply if a low water condition exists.

A. pressure control
B. zero-reducing governor
C. manual reset valve
D. vaporstat

Answer 6

C. manual reset valve

Question 7

The pneumercator is used to

A. indicate gallons of fuel oil in the tank
B, supply primary air to the burner
C, indicate fuel burned in a 24-hour shif
D. indicate gallons of makeup used

Answer 7

A. indicate gallons of fuel oil in the tank

Question 8

An indication of a dirty fuel oil strainer would be
across the strainer.

A, a large pressure drop
B. an equalizing of pressure
C, a slight pressure drop
D no change in pressure

Answer 8

A, a large pressure drop

Question 9

Duplex strainers are found on of the fuel oil pump.

A, the suction side
B, the discharge side
C. both the suction and discharge sides
D. none of the above

Answer 9

C. both the suction and discharge sides

Question 10

10. Fuel oil heaters must be used when burning No. fuel oil

A.1
B.2
C.4
D. 6

Answer 10

D. 6

Question 11

Fuel oil heaters must be protected from excessive fuel oil pressure because they are located the fuel pumps.

A. above
B. on the suction side of
C, on the discharge side of
D. they need no protection due to internal bypass

Answer 11

C, on the discharge side of

Question 12

The rotary cup burner atomizes fuel oil using

A. pressure
B. a spinning cup
C. a spinning cup and high velocity air
D. an air nozzle

Answer 12

C. a spinning cup and high velocity air

Question 13

In a pressure atomizing burner, atomization is accomplished by

A. high pressure gas in the burner blower
B, rotating, high pressure oil coming out of the plug or sprayer plate
C. air or steam mixing with the oil the burner
D. the low temperature, high pressure oil supplied to

Answer 13

B, rotating, high pressure oil coming out of the plug or sprayer plate

Question 14

A gas pressure regulator is used to control the

A. flow of gases of combustion
B. desired pressure at the burner
C. air flow going to the burner
D. mixture of air and gas

Answer 14

B. desired pressure at the burner

Question 15

A solenoid valve is a direct acting valve in the gas system and is used

A. to regulate the flow of gas to the burner
B. to regulate the flow of air to the burner
C, as an automatic gas shutoff valve
D. as a gas return valve

Answer 15

C, as an automatic gas shutoff valve

Question 16

To prevent caking and to dry the coal entering the pulverizer,

A. heating coils are used
B, electric pipe heaters are used
C. warm air is used
D dryers are used

Answer 16

C. warm air is used

Question 17

Blowers are used in a high pressure gas system to

A, supply air for combustion
B. remove gases of combustion
C. regulate the flow of gas
D, cool the combustion chamber

Answer 17

A, supply air for combustion

Question 18

The air-to-gas ratio is maintained by a(n)

A. air damper
B. butterfly valve
C. modulating motor and linkage
D. all of the above

Answer 18

D. all of the above

Question 19

The gas pressure reducing valve in the low pressure gas system reduces the gas pressure to psi.

A.0
B.5
C. 10
D. 15

Answer 19

A.0

Question 20

The amount of gas drawn into the air stream in a low pressure gas system is controlled by the

A. manual reset valve
B. check valve
C. venturi effect
D. flow control valve

Answer 20

C. venturi effect

Question 21

Boilers are equipped with a combination gasfuel oil burner for

A greater efficiency
B. more flexible operation
C. safer operation
D higher rates of combustion

Answer 21

B. more flexible operation

Question 22

The underfeed stoker ean burn

A. only anthracite coal
B. only bituminous coal
C. anthracite or bituminous coal
D. only coal with a highly volatile content

Answer 22

C. anthracite or bituminous coal

Question 23

spreader stokers burn coal

A. only in suspension
B. only on grates
C. in suspension and on grates
D., in retorts

Answer 23

C. in suspension and on grates

Question 24

To achieve complete combustion in a spreader stoker, air is introduced

A. under and over the fuel
B. only under the fuel bed
C. only over the fuel bed
D. using an induced draft fan

Answer 24

A. under and over the fuel

Question 25

The thickness of the fuel bed on a chain grate stoker is regulated by a coal

A. conveyor
B. scale
C. hopper
D. gate

Answer 25

D. gate

Question 26

Pulverized coal burns

A. on inclined grates
B, in suspension
C. in suspension and on grates
D in the pulverizer

Answer 26

B, in suspension

Question 27

The volume of gas to the burner in a high pressure gas system is controlled by a valve.

A. solenoid
B. manual reset
C. check
D. butterfly

Answer 27

D. butterfly