New Class 1c Boiler Exam
New class 1c boiler is a test about this specific boiler. It sounds an easy one but it all depends on how good you are with such appliances. Take it up and see how much you know.
Questions and Answers
- 1.
Safety vales be tested
- A.
Monthly
- B.
Daily
- C.
Weekly
- D.
Annually
Correct Answer
A. MonthlyExplanation
Safety valves should be tested on a monthly basis. This is because safety valves are critical components in systems that are designed to release excess pressure and prevent equipment damage or accidents. Regular testing ensures that the valves are functioning properly and can effectively relieve pressure when needed. Monthly testing allows for timely identification and resolution of any issues or malfunctions, ensuring the continued safety and reliability of the system.Rate this question:
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- 2.
Low waterfuel cut off tested
- A.
Monthly
- B.
Daily
- C.
Weekly
- D.
Annually
Correct Answer
B. DailyExplanation
The low waterfuel cut off is a safety device used in boilers to prevent damage caused by low water levels. Testing this device daily ensures that it is functioning properly and can effectively shut off the fuel supply when the water level is too low. This regular testing helps to prevent accidents and maintain the safety of the boiler system.Rate this question:
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- 3.
Before testing a low water cut off you should do what
- A.
· boiler needs to be on know where the manuel reset is... · boiler needs to be on know where the manuel reset is... · boiler needs to be on know where the manuel reset is...
- B.
Boiler needs to be off where manuel reset
Correct Answer
A. · boiler needs to be on know where the manuel reset is... · boiler needs to be on know where the manuel reset is... · boiler needs to be on know where the manuel reset is...Explanation
Before testing a low water cut off, the boiler needs to be turned on and the location of the manual reset should be known.Rate this question:
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- 4.
When two 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.
B. the slow opening valv
- C.
Modulating
Correct Answer
C. ModulatingExplanation
When two bottom blow down valves are used on a steam boiler, the valve located closest to the boiler shell is the modulating valve. The modulating valve allows for precise control of the blow down process by adjusting the flow rate of water being discharged from the boiler. This valve is typically used in larger boilers where a more controlled blow down operation is required to maintain water quality and prevent excessive loss of heat and water.Rate this question:
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- 5.
min. pipe size to hook up to water column to boiler
- A.
1
- B.
1/2
- C.
1/4
- D.
3/4
Correct Answer
A. 1Explanation
The correct answer is 1 because it is the minimum pipe size required to hook up the water column to the boiler. This means that a pipe with a diameter of 1 inch is necessary to connect the water column to the boiler efficiently and effectively. Using a smaller pipe size, such as 1/2 inch or 1/4 inch, may result in insufficient water flow and pressure, which can negatively impact the performance of the boiler. A larger pipe size, such as 3/4 inch, may not be necessary and could potentially lead to unnecessary costs and inefficiencies.Rate this question:
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- 6.
What is the min size pipe that may be used to attach a steam gauge to a steam boiler
- A.
1/4
- B.
1/2
- C.
1
Correct Answer
A. 1/4Explanation
The correct answer is 1/4. This is because the question asks for the minimum size pipe that can be used to attach a steam gauge to a steam boiler. The smaller the size of the pipe, the more restricted the flow of steam will be. Therefore, the smallest size pipe that can effectively attach the steam gauge to the steam boiler is 1/4.Rate this question:
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- 7.
What valve is used when steam flows in under the seat up and out the outlet
- A.
Check valve
- B.
A back flow preventer
- C.
globe valve
- D.
Gate valve
Correct Answer
C. globe valveExplanation
A globe valve is used when steam flows in under the seat up and out the outlet. This type of valve has a disc that moves up and down to control the flow of steam. The disc is connected to a stem that is operated by a handwheel or actuator. When the steam flows in, the disc is lifted off the seat, allowing the steam to pass through the valve and out the outlet. When the steam flow stops or reverses, the disc is pushed back onto the seat, preventing backflow.Rate this question:
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- 8.
Different ways a low water fuel cut out can be tested quick slow drain evaporation test- this is the best?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given answer is true because testing a low water fuel cut out in different ways, such as through quick and slow drain tests or an evaporation test, is indeed the best approach. These tests help ensure that the low water fuel cut out is functioning properly and will cut off the fuel supply when the water level is low, preventing potential damage or accidents.Rate this question:
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- 9.
If the gauge glass is cloudy and you cannot see the water level can you continue the boiler in operation- yes-- by using the try cocks - crack the bottom?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
If the gauge glass is cloudy and the water level cannot be seen, it is still possible to continue the boiler in operation by using the try cocks. By cracking open the bottom try cock, some water can be released and its level can be checked. This allows for a visual inspection of the water level and ensures that the boiler can be operated safely. Therefore, the statement is true.Rate this question:
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- 10.
If you are operation in a steam plant what two things should be checked or first?
- A.
Water level steam preasure
- B.
Water hight, clean air
- C.
For leaks time on boiler
Correct Answer
A. Water level steam preasureExplanation
In a steam plant operation, it is crucial to check the water level and steam pressure as the first step. Monitoring the water level ensures that there is an adequate supply for steam generation and prevents the boiler from running dry, which can cause damage. Additionally, checking the steam pressure ensures that it is within the desired range for efficient operation and to avoid any potential safety hazards. These two factors are essential for maintaining the proper functioning of a steam plant.Rate this question:
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- 11.
List the first two to check for in a hot water boiler plant
- A.
Water presure water temp
- B.
Water level steam pressure
Correct Answer
A. Water presure water tempExplanation
The first two things to check for in a hot water boiler plant are the water pressure and water temperature. These parameters are crucial in ensuring the proper functioning and efficiency of the boiler system. Monitoring the water pressure ensures that there is sufficient pressure for the water to circulate through the system effectively. Similarly, checking the water temperature helps to maintain the desired temperature range for efficient heating. Both these factors are essential for the safe and optimal operation of the hot water boiler plant.Rate this question:
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- 12.
When a burner motor starts up purging begins,,, what does this mean
- A.
Clean air
- B.
Leaks
- C.
High temp
- D.
Bad emiter
Correct Answer
A. Clean airExplanation
When a burner motor starts up purging, it means that it is removing any impurities or contaminants from the air before the actual combustion process begins. This ensures that the air being used for combustion is clean and free from any particles that could potentially affect the efficiency or performance of the burner.Rate this question:
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- 13.
On automatic fired boilers and before a pilot is lite what is required?
- A.
Must have 4 complet air changes
- B.
Fuel
- C.
No leaks
- D.
Good temp
Correct Answer
A. Must have 4 complet air changesExplanation
Before a pilot is lit on automatic fired boilers, it is required to have 4 complete air changes. This ensures that the combustion process is efficient and safe by replacing the stale air with fresh air. The air changes help in maintaining the proper oxygen levels for combustion and preventing the accumulation of any harmful gases. It is an essential step to ensure the smooth operation of the boiler and minimize the risk of any potential hazards.Rate this question:
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- 14.
40 horse power high pressure boiler how often checked
- A.
2 hrs
- B.
4 hrs
- C.
8 hrs
- D.
24 hrs
Correct Answer
A. 2 hrsExplanation
The correct answer is 2 hrs because high pressure boilers require frequent monitoring and inspections to ensure their safe and efficient operation. Checking the boiler every 2 hours allows for early detection of any potential issues or malfunctions, allowing for timely maintenance or repairs to prevent accidents or breakdowns. Regular checks also help to maintain optimal performance and prevent any damage or deterioration that may occur over time. Therefore, checking the boiler every 2 hours is necessary to ensure its reliability and safety.Rate this question:
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- 15.
20 horsepower boiler how often checked
- A.
24
- B.
2
- C.
8
- D.
36
Correct Answer
A. 24Explanation
The question asks how often a 20 horsepower boiler should be checked. The answer of 24 suggests that the boiler should be checked every 24 hours. It is important to regularly check boilers to ensure they are functioning properly and to prevent any potential issues or accidents.Rate this question:
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- 16.
Use a try cock start at the bottom crack open water
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
This statement is true because using a try cock is a common method to check the water level in a system. By starting at the bottom and cracking open the water, any excess water can be drained out through the try cock. This helps to ensure that the system is properly filled and avoids any potential issues or damage caused by overfilling.Rate this question:
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- 17.
When testing the low water cut out make sure the burner is on before testing
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
When testing the low water cut out, it is important to ensure that the burner is on before conducting the test. This is because the low water cut out is a safety device that is designed to shut off the burner if the water level in the system drops below a certain point. By testing it with the burner on, we can ensure that the device is functioning correctly and will shut off the burner when necessary to prevent any potential damage or hazards.Rate this question:
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- 18.
Before testing a low water cut off you shuld do what
- A.
Know where the manuel rest is boiler needs to be on
- B.
Check for leaks
- C.
Make sure there is fuel
Correct Answer
A. Know where the manuel rest is boiler needs to be onExplanation
Before testing a low water cut off, it is important to know where the manual reset is located. Additionally, the boiler needs to be turned on in order to properly test the low water cut off. Checking for leaks and ensuring there is fuel are not directly related to testing the low water cut off and therefore not necessary before conducting the test.Rate this question:
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- 19.
Sensible heat is measured with a thermometer can be felt
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Sensible heat refers to the heat energy that can be sensed or felt. It can be measured using a thermometer because it is related to the temperature of an object or substance. When an object or substance gains or loses sensible heat, there is a corresponding change in its temperature, which can be detected by a thermometer. Therefore, the statement that sensible heat is measured with a thermometer and can be felt is true.Rate this question:
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- 20.
What is the unit called that controls the starting and stopping of the burner by sensing the temperature of the water in a hot water boiler?
- A.
Aqua state
- B.
Senser
- C.
Globe valve
- D.
Gate valve
Correct Answer
A. Aqua stateExplanation
The unit that controls the starting and stopping of the burner by sensing the temperature of the water in a hot water boiler is called Aqua state.Rate this question:
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- 21.
In a steam boiler system, the unit that turns the burner on and off based on steam pressure is the :
- A.
pressure control
- B.
Globe valve
- C.
Gate valve
Correct Answer
A. pressure controlExplanation
In a steam boiler system, the unit that turns the burner on and off based on steam pressure is the pressure control. This control mechanism monitors the steam pressure and activates the burner when the pressure drops below a certain threshold, ensuring that the boiler maintains the desired steam pressure. It is an essential component in regulating the steam generation process and preventing any potential damage or inefficiencies.Rate this question:
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- 22.
What is the minimum size drain required on a water colum?
- A.
3/4
- B.
1/2
- C.
1/4
- D.
1
Correct Answer
A. 3/4Explanation
The minimum size drain required on a water column is 3/4.Rate this question:
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- 23.
) the low water cut out should be tested: daily---
- A.
Daily
- B.
Weekly
- C.
Mon
- D.
Yr
Correct Answer
A. DailyExplanation
The low water cut out should be tested daily to ensure that it is functioning properly. This is important because the low water cut out is a safety feature that shuts off the boiler if the water level drops too low. By testing it daily, any issues or malfunctions can be identified and addressed promptly, preventing potential damage to the boiler and ensuring the safety of the system.Rate this question:
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- 24.
The evaporation of 34.5 pounds of water per hour from and at a temperature of 212 f is defined as: one boiler horse power
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true. The evaporation of 34.5 pounds of water per hour from and at a temperature of 212°F is indeed defined as one boiler horsepower. This is a commonly used measurement in the field of boilers and steam engines to quantify the power output of a boiler.Rate this question:
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- 25.
32 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.
Correct Answer
C. Water on one side hot gas on the other side.Explanation
Heating surface is defined as the surface where heat transfer occurs between water on one side and hot gas on the other side. This means that the heating surface acts as a boundary between the water and the hot gas, allowing heat to be transferred from the gas to the water.Rate this question:
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- 26.
When two bottom blow down valves are used on a steam boiler, what valve is located closes to the boiler shell?
- A.
He quick opening valv
- B.
He slow opening valve
- C.
Modulating
Correct Answer
A. He quick opening valvExplanation
The quick opening valve is located closest to the boiler shell when two bottom blow down valves are used on a steam boiler. This valve is designed to quickly release a large amount of steam and water from the boiler, allowing for rapid blow down and removal of impurities. The slow opening valve, on the other hand, is used to control the flow rate and ensure a gradual release of steam and water. The quick opening valve is positioned closer to the boiler shell to provide a more immediate and efficient blow down process.Rate this question:
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- 27.
What type of valve is permitted to shut off a steam gauge?
- A.
Gate valve
- B.
tee or lever handle valve
- C.
Globe valve
Correct Answer
B. tee or lever handle valveExplanation
A tee or lever handle valve is permitted to shut off a steam gauge because it provides a quick and easy way to control the flow of steam. The tee or lever handle valve can be easily turned on or off by simply rotating the lever handle, allowing for efficient and convenient operation. This type of valve is commonly used in steam systems to regulate the flow of steam and to isolate equipment for maintenance or repair.Rate this question:
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- 28.
Where is the breeching located at for a steam or hot water boiler?
- A.
Below the fire box
- B.
the duct in front of the boile
- C.
Between the boiler and the chimney
Correct Answer
C. Between the boiler and the chimneyExplanation
The breeching is located between the boiler and the chimney. The breeching is a duct that connects the boiler to the chimney and allows the combustion gases to be safely vented out of the system. It is an important component in the boiler system as it ensures the proper flow of gases and helps maintain the efficiency and safety of the boiler operation.Rate this question:
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- 29.
On a steam boiler when are two bottom blowdown valves required?
- A.
Below 90 ps
- B.
When pressures exceed 100 psi
- C.
Above 120 psi
- D.
Above 1000psi
Correct Answer
B. When pressures exceed 100 psiExplanation
When the pressure in a steam boiler exceeds 100 psi, two bottom blowdown valves are required. This is necessary to ensure proper maintenance and safety of the boiler system. The blowdown valves are used to remove sediment and impurities from the bottom of the boiler, preventing the build-up of harmful deposits and maintaining efficient operation. Having two valves allows for redundancy and ensures that the blowdown process can be carried out effectively.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 06, 2013Quiz Created by
Serviceking