Boiler Exam 1c Minnesota
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Boiler exam
- 1.
- A.
A swp = ts xt x eff
- B.
b. output divided by the input
- C.
C. e=mc squared
- D.
D input divided by output
- 2.How many ways can heat be transferred?
- A.
1
- B.
2
- C.
3
- D.
4
- 3.How man typed of heat ar there?
- A.
1
- B.
2
- C.
3
- D.
4
- 4.How may different types of draft are there?
- A.
1
- B.
2
- C.
3
- D.
4
- 5.How may different types of boilers are there?
- A.
1
- B.
2
- C.
3
- D.
4
- 6.How many different types of low water fuel cut of are in general use?
- A.
1
- B.
2
- C.
3
- D.
4
- 7.How many different types of air are there?a)1 b2 c3 d4
- A.
1
- B.
2
- C.
3
- D.
4
- 8.A (RPZ) reduced pressure zone or back flow preventer prevents contaninated water from entering the domestic water supply.
- A.
True
- B.
False
- 9.Boilers and boiler fittings used in the state of Minnesota must be constructed to what code?
- A.
A N.E.C.
- B.
A.S.M.E.
- C.
City code
- D.
N.F.P. A
- 10.
- A.
Aqua stat
- B.
Pressure troll
- C.
Vapor stat
- D.
Flow control valve
- 11.Heat cant be transferred in three ways and they are:
- A.
Latent heat, specific heat, sensible heat
- B.
Conduction , radiation, convection
- C.
Heat flow measured heat flow.
- 12.The first sequence in the series of automatic bgurner controls is:
- A.
Ignition
- B.
Purging
- C.
To make up the gas switch
- D.
Startup on low fire
- 13.Air that is mixed with the fuel at / or in the burner is called:
- A.
Secondary air
- B.
Primary air
- C.
Excess air
- D.
Mixable air
- 14.
- A.
No, because the boiler is completely filled with water.
- B.
Yes, for numerous reasons
- C.
No , because there is water in the expansion tank
- 15.
- A.
City water fill valve
- B.
Low water fuel cut off
- C.
A feed water regulator
- 16.
- A.
Flash point
- B.
Viscosity
- C.
Fire point
- D.
Pour point
- 17.
- A.
Two or more safety valves on each boiler
- B.
A main steam stop
- C.
A chimney and breeching to each boiler
- D.
Two or more types of fuel
- 18.What removes air from a hot water boiler system?
- A.
A siphon device
- B.
Air control
- C.
Flow control
- D.
Relief valve
- 19.
- A.
Be held to its seat by screwing down the compressions spring
- B.
Have its valve disc held to its seat by means of testing clamp or” gag
- C.
Be set above the maximum allowable working pressure
- 20.Why is a safety valve sealed?
- A.
To prevent damage to the safety valve
- B.
To prevent tampering with pressure and capacity
- C.
To allow for blow back
- D.
To protect to spring
- 21.Oxygen in a boiler water can causea scale b carry over c corrosion d priming
- A.
Scale
- B.
Carry over
- C.
Corrosion
- D.
Priming
- 22.
- A.
Aqustat bpressure control
- B.
Pressure control
- C.
Potentiomete
- D.
Modulator control
- 23.
- A.
Add water immediately through the manual fill line
- B.
Shut off the fuel to the burner and secure the boiler
- C.
Notify the boiler inspector but continue to run the boiler
- 24.
- A.
0 to 20 psi and 0 to 15 psi
- B.
Cut in pressure and differential pressure
- C.
0 to 10 psi and 0 to 20 ps
- D.
None of these
- 25.What is the minimum size bottom blowdown line used on a mini or miniature boiler?
- A.
¼ inch
- B.
½ inch
- C.
¾ inch
- D.
1 inch
- 26.What is the minimum size drain required on a water colum?A 1 inch b ¾ inch c ¼ inch d ½ inch
- A.
1 inch
- B.
¾ inch
- C.
¼ inch
- D.
½ inch
- 27.What conditions are necessare to cause a furnace explosion?Atoo much aire b not enough air c accumulation of unburned fuel, oxygen and an igition source d to much fuel
- A.
Too much aire
- B.
Not enough air
- C.
Accumulation of unburned fuel, oxygen and an igition source
- D.
To much fuel
- 28.
- A.
Daily
- B.
Weekly
- C.
Monthly
- D.
Once a year
- 29.Can high pressure safety valve be used on the sam boiler for low pressure?
- A.
Yes by changing the spring pressure
- B.
Cannot be used..
- C.
Only by tightening the spring pressure
- 30.Gauge pressure plus 14.7 psi is called what?A atmospheric pressureB positive pressureC absolute pressureD operating pressure
- A.
Atmospheric pressure
- B.
Positive pressure
- C.
Absolute pressure
- D.
Operating pressure
- 31.The unit that shuts off the burner in the event of low water is:a feed water pumpb safety valvec low water fuel cut out d operating contrb safety valveol
- A.
Feed water pump
- B.
Safety valve
- C.
Low water fuel cut out
- D.
Operating control
- 32.The evaporation of 34.5 pounds of water per hour from and at a temperature of 212 f is defined as:
- A.
The latent heat of evaporation
- B.
One boiler horsepower
- C.
An evaporation
- 33.When a safety valve opens and closes rapidly it is referred to as: a chatteringb poppingc blow backd pressuring
- A.
Chattering
- B.
Popping
- C.
Blow back
- D.
Pressuring
- 34.Furnace explosings are caused by a build up of combustible gases, or vapors in the combustion chamber, what is the term used to remedy this condition?A clearingB modulatingC purgingD huddling
- A.
Clearing
- B.
Modulating
- C.
Purging
- D.
Huddling
- 35.In order form a fuel to burn it must be heated to:
- A.
212 f
- B.
At least 1000 f
- C.
Its ignition temperture
- 36.
- A.
To prevent water hamme
- B.
To protect the gauge from a high temperature
- C.
To reduce the pressure
- 37.In a steam boiler system, what is the term used for replacing the water that has been lost by blowng down the boiler or through leaks in the system?A make up waterB condensateC feed replacement
- A.
Make up water
- B.
Condensate
- C.
Feed replacement
- 38.On a steam boiler system, why are bottom blow down valves installed at the lowest point of the waterside of boilers?A to remove sludge and sedimentB to remove make up waterC to prevent corrosion
- A.
To remove sludge and sediment
- B.
To remove make up water
- C.
To prevent corrosion
- 39.Heating surface is defined as:
- A.
A hot surface
- B.
The surface used for heating
- C.
Water on one side hot gas on the other side.
- 40.
- A.
The radiator will overheat
- B.
The radiator will not heat the room properly
- C.
The steam trap will leak
- 41.In a fire tube boiler, the water
- A.
Surrounds the tubes
- B.
Is inside the tubes
- C.
Both inside and outside of the tubes
- 42.What chemical is used as an oxygen scavenger?A sodium sulfiteB sodium hydroxideC sodium nitrite
- A.
Sodium sulfite
- B.
Sodium hydroxide
- C.
Sodium nitrite
- 43.
- A.
The quick opening valve
- B.
The slow opening valve
- C.
Modulating
- 44.
- A.
Regulate or control an even amount of steam pressure
- B.
Regulate the blow back
- C.
Prevent the pressure in a steam boiler from exceeding its maximum allowable working pressure.
- 45.The control designed as a safety back up , should the pressure control fail is:
- A.
A modulating control
- B.
An end switch
- C.
A sail switch
- D.
A high limit control
- 46.
- A.
Pounds of steam shown on the steam gauge
- B.
Pounds of steam that can be discharged in one hour
- C.
Pound of steam increased per min
- 47.
- A.
Burner starts on pressure decreased stop on pressure increase
- B.
Burner starts on pressure increase stop on pressure decrease
- C.
Starts burner on pressure increaseA burner starts on pressure decreased stop on pressure increase
- D.
Stops burner on pressure
- 48.
- A.
When coud stop valves be eliminated for a single hot water heating boiler? A when the pressure is less then 30 psi B when the boiler is located above the system C when the pressure is less then 15 psi A when the pressure is less then 30 ps
- B.
When the boiler is located above the system
- C.
When the pressure is less then 15 psi
- 49.In some heating systems the circulation pump is controlled by the?
- A.
Water pressure
- B.
Thermostat
- C.
Water head pressure
- 50.What action should an operating engineer take if a defect is discovered in a boiler requiring repairs not of a routine nature?
- A.
Notify the boiler inspector
- B.
Notify the sheriff
- C.
Notify another engineer in the plant
- 51.Boiler are considered low pressure when:
- A.
Steam boiler are not over 15 psi and liquid boiler are not over 160 psi and 250 deg F
- B.
Steam boilers not over 30 psi hot water boiler not over 50 psi
- C.
Steam boiler not over 20 psi liquid boiler not over 100 psi 212 deg F
- 52.What boiler license is required for operating boiler as a shift engineer in a plant having three boiler each having 1660 sq ft of heating surface?
- A.
Special
- B.
Second
- C.
First
- D.
Ch
- 53.
- A.
4165
- B.
5165
- C.
5700
- D.
4700
- 54.What type of valve is permitted to shut off a steam gauge?
- A.
Gate valve
- B.
A tee or lever handle valve
- C.
Globe valve
- 55.What is a draft gauge?
- A.
Pyrometer
- B.
Manometer
- C.
Flow gauge
- 56.
- A.
Too much air in the system
- B.
Water logged expansion tank
- C.
Water temperatue too high
- 57.The maximum temperature to be carried on a low pressure hot water boiler is
- A.
212f
- B.
Less then 250 f
- C.
Less then 214 f
- 58.The popping pressure of a safety relief valve on a low pressure hot water heating boiler cannot exceed.
- A.
160 psi
- B.
15 psi
- C.
212 psi
- D.
30 psi
- 59.
- A.
Lowest point of the fireside of a steam boiler
- B.
Lowest point of the waterside of a steam boile
- C.
Lowest pint of the water colum drain line
- 60.
- A.
Look at the maximum btu input on the burner
- B.
Look at the setting of the safety valve or safety relif valve.
- C.
Record the pressure regulator setting
- 61.
- A.
2 ½sq ft
- B.
10 sq ft
- C.
5 sq ft
- D.
5 sq ft
- 62.
- A.
Back flow preventor valve
- B.
Safety relif valve
- C.
Pressure reducing valve
- D.
Safety valve
- 63.
- A.
Safety relief valve, temperature pressure gauge, aua stat, and expansion or compression tank.
- B.
Safety valve, pressure control, , pressure gauge, aqua stat feed, water pump
- 64.If you fail a state of Minnesota boiler operators license exam ho long must you wait before you can retake the exam?
- A.
30 days
- B.
20- days
- C.
10 days
- 65.
- A.
Water to water heat exchanger
- B.
A cast iron boiler
- C.
A hot water supply boiler
- 66.What is the maximum size safety valve that may be installed on a low pressure boiler?
- A.
4 ½
- B.
3 inch
- C.
2 ½
- D.
I inch
- 67.What does a flue gas analyzer measure?
- A.
The percentages of carbon monoxide carbon dioxide and oxygen.
- B.
Amount of nitrogen in the flue gas
- C.
Amount of sulfur dioxide in the flue gases
- 68.65 what is recommended for boilers that will be out of service for a long time and a possibility of freezing?
- A.
Blank off the flanges and gag the safety valve
- B.
B a dry lay up
- C.
C wash the boiler once a week
- 69.In a hot water heating system what would prevent the hot water from circulation through a room heating unit?
- A.
Trapped air
- B.
Water too hot
- C.
Back flow preventor valve
- 70.In a hot water heating system what would prevent the hot water from circulation through a room heating unit?
- A.
Trapped air
- B.
Water too hot
- C.
Back flow preventor valve
- 71.Draft is the difference in pressure between tow points that cause air?
- A.
True
- B.
False
- 72.
- A.
Excess air
- B.
Lower temperature air
- C.
A double insulated boiler
- 73.If a deposit of carbon appears on the rear wall of the combustion chamber of the mechanical pressure type oil burner a good procedure is to:
- A.
Enlarge the combustion chamber
- B.
Cut down the air supply
- C.
Try a wider angle nozzle
- 74.The rapid burning of fuel and oxygen that results in the release of heat is called
- A.
Purging
- B.
Atomization
- C.
Combustion
- 75.A slow opening valve used as a bottom blow down valve requires how many complete 360 degree turns to open?
- A.
3 turns
- B.
4 turns
- C.
5 turns
- 76.In a steam boiler system a possible water hammer is caused by:
- A.
Carryover
- B.
A plugged water column
- C.
A pulsating flame
- 77.
- A.
115 f
- B.
45 f
- C.
70 f
- D.
212 f
- 78.
- A.
Stop and check valve
- B.
Globe valve
- C.
Safety valve
- D.
Gate valve
- 79.If a condensate pump becomes steam bound and stops delivering water what could be done to correct the problem?
- A.
Close the suction line
- B.
Increase head pressure
- C.
Increase water temperature
- 80.
- 81.77 after repair work is done on the boiler a test is used to chek for leaks: what king of test is used?
- A.
R a flame scanner test
- B.
S accumulation tes
- C.
T atmospheric test
- D.
U hydrostatic test
- 82.
- A.
V to the maximum allowable working pressure
- B.
W one and one half to two times the maximum allowable working pressure
- C.
X threee times the maximum allowable working pressure
- 83.79 the three basic tpes of low pressure boiler are:
- A.
Y fire box, fire tube, fire flue
- B.
Z water channel , fire tube, updraf
- C.
Aa fire tube, water tube cast iron sectional
- 84.80 if idle boilers are left filled with water, what precaution should be taken to prevent corrosion an oxygen pitting?
- A.
A keep the boiler water warm
- B.
B keep the boiler water properly treated
- C.
C blow down the boiler once a day
- D.
D remove chemicals from boiler water
- 85.81 the term used for the evaporative capacity output of a steam boiler is expressed in : a
- A.
A a pounds per minute
- B.
B pounds per day
- C.
C pounds per week
- D.
D pounds per hour
- 86.82 the term used when small particles of water are carried over into the steam lines is called:
- A.
Aa water separation
- B.
B priming
- C.
C contamination
- D.
D steam separation
- 87.83 what boiler license is required to be in charge of a boiler plant having two boilers each having 2500 sq ft of heating surface?
- A.
A special eng
- B.
B 2nd
- C.
C 1st class
- D.
D ch eng
- 88.76 for each eng. Lic. Fill in the blanks, indicating how large of a boiler they can be in charge of: a a sp eng __________________hsp b 2nd cl _______________________hsp c 1st cl. ____________________hsp d ch eng. _______________________hsp
- 89.85when testing the low water fuel cutoff on a steam boiler the burner shoud be firing why?
- A.
A to see if the flame pops
- B.
B to see if the burner shuts off
- C.
C to make sure the burner starts in the low fire position.
- 90.86how often should safety valves be tested on a low pressure boiler?
- A.
A daily
- B.
B annually
- C.
C weekly
- D.
D monthly
- 91.
- A.
A hang up
- B.
B cut out pressure
- C.
C blow down blow back
- D.
D over pressure
- 92.88 what is the minimum size pipe that is used to connect the water column to the boiler?
- A.
A ½
- B.
B ¾
- C.
C 1 in
- D.
D 2 in
- 93.89 the most important safety device on a steam or liquid boiler is what? A the steam or altitude gauge B the water column C the gauge glass D the safety of safety relief valve
- A.
A the steam or altitude gauge
- B.
B the water column
- C.
C the gauge glass
- D.
D the safety of safety relief valve
- 94.90 where is the breeching located at for a steam or hot water boiler?
- A.
A below the fire box
- B.
B the duct in front of the boiler
- C.
C between the boiler and the chimney
- 95.
- A.
A ch eng lic
- B.
B 1st cl
- C.
C 2nd class
- D.
D sp eng ic.
- 96.92what three things are required to support combustion?
- A.
A fuel, an arc, and time
- B.
B fuel, heat, and oxygen
- C.
C fuel, an arc, and temperature
- 97.93 what can result if condensate is picked up with the steam as it travels through the main steam branch lines?
- A.
A steam bound piping
- B.
B water hammer
- C.
C steam line will be cooler
- D.
D steam line will be hotter
- 98.94 what are used to direct the flow of gases through out the boiler? A
- A.
A combustion controls
- B.
B fire tubes
- C.
C baffles
- 99.95 on a steam boiler system, shat is the first thing a boiler operator should do when entering a boiler room?
- A.
A blow down the boiler
- B.
B check the water level in the boiler
- C.
check the fire in the combustion
- 100.96On some steam boiler system vacuum pumps are used why a to increase pressure b it creates a vacuum on the return lines drawing back condensate to the vacuum tank c to insure the proper operation of steam traps
- A.
A to increase pressure
- B.
B it creates a vacuum on the return lines drawing back condensate to the vacuum tank
- C.
C to insure the proper operation of steam traps
- 101.97 what is required by statute, by the state of Minnesota, boiler inspection division for all boiler rooms?
- A.
A a R stamp
- B.
B a current inspection certificates and proper boiler engineer license
- C.
C a boiler certificate
- 102.98 fuel oxygen and heat are required to start and sustain a fire:
- A.
True
- B.
False
- 103.99 fuel oil strainers remove foreign matter in a fuel system what is the purpose of duplex strainer located on the suction line before the fuel oil pump? A isolate the system in the event of fire B to strain all of the oil C make sure the oil is clean D the boiler can be run while cleaning the strainer
- A.
A isolate the system in the event of fire
- B.
B to strain all of the oil
- C.
C make sure the oil is clean
- D.
D the boiler can be run while cleaning the strainer
- 104.100 what valve is used when steam flows in under the seat up and out the outlet
- A.
A check valve
- B.
B a back flow preventer
- C.
C globe valve
- D.
D gate valve
- 105.
- 106.How often do you need to check a 20 horse power high pressure boiler
- A.
8 hr
- B.
16 hrs
- C.
24 hrs
- D.
40 hrs
- 107.How often shoud a lwo water fuel cut off be tested?
- 108.List the different ways a low water fuel cut out can be tested
- 109.Of all the ways a low water fuel cut off can be tested which is the best way?
- 110.If the gauge glass is cloudy and you cannot see the water level can you continue the boiler in operation?
- 111.If you are operation in a steam plant what two things should be checked for first
- 112.List the first two to check for in a hot water boiler plant.?
- 113.When a burner motor starts up purging begins, what does this mean?
- 114.On automatic fired boiler and before a pilot is lite what is required?
- 115.You are operating a 40 horsepower high pressure boiler, how often will it be checked?
- A.
8 hr
- B.
16 hr
- C.
24 hr
- D.
2 hr
- 116.Explain in detail how ou would use the try cocks
- 117.When testing the low water cu out list the steps you would take
- 118.Before testing a low water cut off you should do what
- 119.When filling out a log book what thre word help you keep focused?
- 120.What should be displayed in the boiler room
- A.
Vacation schedule, chemicals used, and insurance papers
- B.
Boiler operator lecense, certificat of inspeciton or exemption state inspector private ins.
- 121.When looking at the gauge glass on a steam boiler what are you looking at if eveyrthing is normal
- A.
The water level will be steady and still
- B.
The water level will be bobbing up and down
- C.
The water in the glass will be lower than the water in the boiler.
- 122.Which one of the answers represents the efficiency formual?
- A.
The output divided by the input
- B.
The input divided by the out put
- C.
The output minus the input
- 123.On a steam boiler when are two bottom blowdown valves required?
- A.
Below 90 psi
- B.
When pressures exceed 100 psi
- C.
Above 120 psi
- D.
Above 1000psi
- 124.What is the mazimum pressure carried on a low pressue hot water boiler
- A.
15 psi
- B.
30 psi
- C.
160 psi
- 125.What element in fuel is needed for combustion?
- A.
Oxygen
- B.
Carbon
- C.
Nitrogen
- 126.What is considered to be one year of experience?
- A.
12 months
- B.
2000 hours
- C.
2080 hours
- D.
4000 hours
- 127.How much experience is required when you apply to take a 2nd class a or b exam?
- A.
18 mon
- B.
4000 hours
- C.
2000 hours
- D.
2080 hours
- 128.How much experience is required if you are taking a chief a or b engineer exam?
- A.
60 mon
- B.
4000 hours
- C.
10000 hours
- D.
6000 hours
- 129.When taking a 1st class a or b operationg engineers exam you must have how much experience?
- A.
36 mon
- B.
42 mon
- C.
6000 hours
- D.
4160 hours
- 130.If you fail a boiler operator exam how long must you wait before you can tetest?
- A.
10 DAYS
- B.
30
- C.
45
- D.
60
- 131.WHEN the state of minnesota wants to know how many btu's are in one boiler horse power
- A.
33478 btu s
- B.
67000 b
- C.
970,4 b
- D.
212 b
- 132.How many pounds of water will be in a actual boiler horsepower/
- A.
34 gals
- B.
Thirty four and one half pounds
- C.
54 lbs
- D.
8.33 gals
- 133.How btu s will be required to evaporate 1 lb of water ( latent heat)
- A.
212 f
- B.
34.5 lbs
- C.
970.4 btu's
- D.
144 btu's
- 134.Oxygen in the boiler water can cause corrosion what chemical can prevent this from happening?
- A.
Sodium sulfate
- B.
Sodium nitrate
- C.
Sodium sulfite
- 135.How many btu's are in the latent heat ( hidden heat) of evaporation?
- A.
970.4 btu s
- B.
180 btu s
- C.
212 btu s
- D.
32 btu s
- 136.Give a definition for sensible heat
- 137.Give a definition for one btu
- 138.When burning oil what is meant by flash point?
- 139.What is meant by fire point
- 140.What is viscosity
- 141.What is the job of the low water fuel cut off
- 142.How would you test the flame scanner
- 143.Give a definition for primary air
- 144.Give a definition for secondary air
- 145.What is excess air
- 146.Years of experience for boiler engineer license
- A. special
- A.
- B. 2nd
- B.
- C. 1st
- C.
- D. cheif
- D.
- 147.Name the different types of draft
- 148.Name different types of air
- 149.Name different types of fuel cut offs
- 150.Name the different types of boilers
- 151.Name the 3 different types of heat
- 152.Heating surface is defined as
- A.
A hot surface
- B.
The surface used for heating
- C.
Water on one side hot gas on the other side
- 153.Fire side boiler is what
- 154.When tow bottom blow down valves are used on a steam boiler, what valve is located closest to the boiler shel
- A.
The quick opening valve
- B.
The slow opening valve
- C.
Modulating
- 155.Who does a pressure control attached to the steam space of a boiler control the burner operation?
- A.
Burner starts on pressure decrease stops on pressure increase
- B.
Starts burner on pressure increase
- C.
Stopes burner on pressure
- 156.Steam bolier are low pressure when steam boiler are not over 15 psi and liquid boiler are not over 160 psi or 250 deg
- A.
True
- B.
False
- 157.What boiler license is required for operating boiler as a shift engieer in a plant having three boiler each having 1660 sq ft of heating surface?
- A.
Sp
- B.
2nd
- C.
1st
- D.
Cheif
- 158.What boiler license is required to be in charge of a boiler plant having two boilers , each having 2500 sq ft of heating surface?
- A.
Sp
- B.
2nd
- C.
1st
- D.
Ch
- 159.What boiler license is requied for operating boiler as a shift engineer in a plant having 3 boiler with heating surfaces of 1500 sqq ft
- A.
Ch
- B.
1st
- C.
2nd
- D.
Sp
- 160.A boiler plant has 3 boilers 1500 sq ft of heating surface each what lic is required to be in charge of theis plant and what lic is required to be a shift engineeer
- 161.What type of valve permitted to shut off steam gauge?
- A.
Gate
- B.
A tee or lever handle valve
- C.
Globe valve
- 162.The mazimum temp to be carried on a low pressure hot water boiler is
- A.
210f
- B.
Less then 250 f
- C.
Less then 215
- 163.Draft is the difference in pressure between tow points that cause air gases to flow
- A.
True
- B.
False
- 164.The valve that is installed when it is desirable to control the rate at which water flows is called a
- A.
Stop and check valve
- B.
Globe valve
- C.
Safety valve
- D.
Gate valve
- 165.How often should safet valves be tested on a low pressure boiler?
- A.
Daily
- B.
Annually
- C.
Weekly
- D.
Monthy
- 166.
- A.
Hang up
- B.
Cut out pressure
- C.
Blow down blow back
- D.
Over pressure
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