FDNY A-35 EXAM LATEST 2023-2024 ACTUAL EXAM 100
QUESTIONS AND CORRECT DETAILED ANSWERS
(100%VERIFIED ANSWERS ) |AGRADE
What is a multistage compressor? - ANSWER- A compressor that discharges air between multiple cylinders before finally reaching the receiver, reaching a new level of compression after passing each cylinder
What happens to air when it is compressed? - ANSWER- It becomes heated
What cools the air after it's been compressed? - ANSWER- An intercooler
What is the purpose of an unloading valve? - ANSWER- To allow air to escape when there is strain on the motor(usually during startup).Automatic in most cases manual on older compressors.
What ensures compressed air does not flow out when the unloading valve is activated? - ANSWER- The check valve
Where is the check valve located? - ANSWER- Between the compressor head air line and the unloading valve air line.
What can be read on the pressure gauge? - ANSWER- The pressure inside the air receiver
What allows air to escape when pressure is too great? - ANSWER- Pressure relieve valves
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What is the purpose of the air intake valve? - ANSWER- It is fitted with an air filter and prevents dust from entering the compressor
What is the purpose of the filter and moisture separator assembly? - ANSWER- To remove moisture from the compressed air before it enters the receiver
What is the purpose of the automatic control device? - ANSWER- To start or shut down the device when desired pressure is reached or more pressure is needed.
What prevents the tank from bursting should the automatic control device malfunction? - ANSWER- The safety relief valve
When is a constant speed control switch necessary? - ANSWER- When a constant flow of compressed air is needed, it allows the compressor to run continuously at a safe speed
What is the purpose of the cooling system? - ANSWER- The compression chamber and compressed air need to be cooled. Small compressors are cooled by air and large ones are cooled by water.
What is the purpose of the low oil level indicator switch? - ANSWER- Shuts down the compressor if oil levels are low to avoid damage to the motor.
What should operators do before starting compressors? - ANSWER- Visually inspect the components to see if correctly installed and working
At what psi can an ear drum be ruptured? - ANSWER- 40 psi
Are hydrostatic tests every 5 years required by the fdny? - ANSWER- No but they are recommended
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