California Custodian Test Prep Class Questions 2026 |
Questions & Answers | Latest Update | Exam Prep |
100% Pass Guarantee
1. What is the equivalent cooling capacity of one ton of refrigeration in BTUs?
1,000 BTUs
12,000 BTUs
3,000 BTUs
24,000 BTUs
2. Why is maintaining a minimum level of free chlorine important for swimming
pool water?
Chlorine is only needed for aesthetic purposes in pool water.
Free chlorine levels can be ignored if the pool is covered.
Maintaining a minimum level of free chlorine is crucial for effective
disinfection and to prevent the growth of harmful microorganisms.
Free chlorine levels are unimportant for pool safety.
3. The fan on rotary cup oil burner provides
Aids to control the flow of air to the compressor
Provide a coating of oil on the refractory
Provide primary air to the nozzle
Delivers secondary air to the nozzle
4. If a facility manager is planning to use a strong chemical cleaning agent in a
poorly ventilated area, what safety measures should be implemented?
Limit the use of the cleaning agent to only one staff member.
, Apply the cleaning agent during peak occupancy hours.
Ensure proper ventilation and provide personal protective
equipment (PPE) for staff.
Use the cleaning agent without any precautions.
5. Describe how a stack switch contributes to the safety of an oil burner system.
A stack switch ensures safety by shutting down the burner if the flue
gas temperature becomes too high, preventing potential hazards.
A stack switch helps in regulating the oil flow to maintain efficiency.
A stack switch ignites the oil to start the burning process.
A stack switch controls the air intake for optimal combustion.
6. What is a common cause of fluctuating fuel oil pressure in heating systems?
Air in the fuel line
Faulty fuel pump
Low fuel oil level
High ambient temperature
7. What is the primary purpose of zeolite in boiler water treatment?
To disinfect water
To remove heavy metals
To increase pH levels
To soften water
,8. Which safety precautions should be adhered to when using cleaning
materials and solvents?
Proper ventilation.
Protective gloves
Safety glasses
All of the above
9. The oil is supplied to the burner mechanical atomizing nozzle under high
pressure of about:
500 kPa (75 psi)
200 kPa (29 psi)
100 kPa (15 psi)
700 kPa (100 psi)
1000 KPa (145 psi)
10. If a facility experiences scaling issues in its boiler due to hard water, how
might the introduction of zeolite improve the situation?
By reducing the hardness of the water and preventing scale
buildup.
By adding chemicals to neutralize the scale.
By increasing the water temperature to dissolve scale.
By filtering out the scale particles from the water.
11. The ideal results of "complete combustion" are:
carbon dioxide, water, and heat
, small amounts of HC and CO
small amount of CO2, O2, and NOx
carbon monoxide, carbon dioxide, and water
12. Describe the importance of maintaining the correct water level in a steam
boiler before operation.
Maintaining the correct water level is crucial to prevent overheating
and damage to the boiler.
Water level only affects the efficiency of the boiler, not its safety.
The water level can be ignored if the boiler has been recently
serviced.
The water level is not important as long as the fuel is sufficient.
13. Which component of an electric elevator is responsible for stopping the
elevator at the correct floor?
Limit switch
Floor door switch
Current to elevator motor
Safety brake
14. Describe the role of a thermostat in maintaining the temperature of water in
a steam heated domestic hot water tank.
The thermostat filters impurities from the water.
The thermostat measures the pressure of the steam to ensure safety.
The thermostat monitors the water temperature and adjusts the
steam flow to maintain the desired temperature.
Questions & Answers | Latest Update | Exam Prep |
100% Pass Guarantee
1. What is the equivalent cooling capacity of one ton of refrigeration in BTUs?
1,000 BTUs
12,000 BTUs
3,000 BTUs
24,000 BTUs
2. Why is maintaining a minimum level of free chlorine important for swimming
pool water?
Chlorine is only needed for aesthetic purposes in pool water.
Free chlorine levels can be ignored if the pool is covered.
Maintaining a minimum level of free chlorine is crucial for effective
disinfection and to prevent the growth of harmful microorganisms.
Free chlorine levels are unimportant for pool safety.
3. The fan on rotary cup oil burner provides
Aids to control the flow of air to the compressor
Provide a coating of oil on the refractory
Provide primary air to the nozzle
Delivers secondary air to the nozzle
4. If a facility manager is planning to use a strong chemical cleaning agent in a
poorly ventilated area, what safety measures should be implemented?
Limit the use of the cleaning agent to only one staff member.
, Apply the cleaning agent during peak occupancy hours.
Ensure proper ventilation and provide personal protective
equipment (PPE) for staff.
Use the cleaning agent without any precautions.
5. Describe how a stack switch contributes to the safety of an oil burner system.
A stack switch ensures safety by shutting down the burner if the flue
gas temperature becomes too high, preventing potential hazards.
A stack switch helps in regulating the oil flow to maintain efficiency.
A stack switch ignites the oil to start the burning process.
A stack switch controls the air intake for optimal combustion.
6. What is a common cause of fluctuating fuel oil pressure in heating systems?
Air in the fuel line
Faulty fuel pump
Low fuel oil level
High ambient temperature
7. What is the primary purpose of zeolite in boiler water treatment?
To disinfect water
To remove heavy metals
To increase pH levels
To soften water
,8. Which safety precautions should be adhered to when using cleaning
materials and solvents?
Proper ventilation.
Protective gloves
Safety glasses
All of the above
9. The oil is supplied to the burner mechanical atomizing nozzle under high
pressure of about:
500 kPa (75 psi)
200 kPa (29 psi)
100 kPa (15 psi)
700 kPa (100 psi)
1000 KPa (145 psi)
10. If a facility experiences scaling issues in its boiler due to hard water, how
might the introduction of zeolite improve the situation?
By reducing the hardness of the water and preventing scale
buildup.
By adding chemicals to neutralize the scale.
By increasing the water temperature to dissolve scale.
By filtering out the scale particles from the water.
11. The ideal results of "complete combustion" are:
carbon dioxide, water, and heat
, small amounts of HC and CO
small amount of CO2, O2, and NOx
carbon monoxide, carbon dioxide, and water
12. Describe the importance of maintaining the correct water level in a steam
boiler before operation.
Maintaining the correct water level is crucial to prevent overheating
and damage to the boiler.
Water level only affects the efficiency of the boiler, not its safety.
The water level can be ignored if the boiler has been recently
serviced.
The water level is not important as long as the fuel is sufficient.
13. Which component of an electric elevator is responsible for stopping the
elevator at the correct floor?
Limit switch
Floor door switch
Current to elevator motor
Safety brake
14. Describe the role of a thermostat in maintaining the temperature of water in
a steam heated domestic hot water tank.
The thermostat filters impurities from the water.
The thermostat measures the pressure of the steam to ensure safety.
The thermostat monitors the water temperature and adjusts the
steam flow to maintain the desired temperature.
