Compressor Output Control Methods
16 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of the start and stop control method in a compressor system?

  • To protect the motor from overloading
  • To maintain a constant pressure in the system
  • To shut down the compressor when little or no air is required (correct)
  • To control the compressor speed

    • Why is it important to have a sufficiently large receiver in the start and stop control method?

  • To reduce compressor wear and tear
  • To avoid continuous starting and stopping of the compressor (correct)
  • To increase the efficiency of the motor
  • To ensure the compressor operates less than 50 percent of the time

    • What is the role of the unloader in a compressor system?

  • To switch on and off the compressor
  • To sense the pressure in the receiver
  • To load and unload the compressor based on speed (correct)
  • To vary the flow of air from the compressor

    • Which type of control method is specifically mentioned as being used only for electric motor driven units?

    <p>Start and stop control</p> Signup and view all the answers

    How does the unloader valve operate in a compressor system?

    <p>It opens when the compressor stops and closes when it starts operating</p> Signup and view all the answers

    Why should the compressor be automatically unloaded during startup?

    <p>To avoid overloading the motor</p> Signup and view all the answers

    What is the purpose of the unloader valve in a reciprocating compressor system?

    <p>To reduce pressure in the discharge pipe when the compressor stops</p> Signup and view all the answers

    In which situation would a pilot type unloader vary the output from the compressor according to air demand?

    <p>When the compressor is very large</p> Signup and view all the answers

    What is the purpose of holding the inlet valves open in a compressor with load/unload control?

    <p>To allow air to pass freely without gaining compression</p> Signup and view all the answers

    Which type of control method allows for adjusting compressor speed by varying the motor speed, regulating steam supply, or regulating fuel supply?

    <p>Variable Speed Control</p> Signup and view all the answers

    When does a compressor with dual capacity control shut down?

    <p>After running at full load for a specific time</p> Signup and view all the answers

    What is the function of protective controls in a compressor system?

    <p>To prevent damage or catastrophic failure</p> Signup and view all the answers

    In load/unload control, what happens to the inlet valve when the compressor is unloaded?

    <p>It opens fully allowing free flow of air</p> Signup and view all the answers

    How does a variable speed control method respond to an increased demand for air?

    <p>By increasing compressor speed</p> Signup and view all the answers

    What does an inlet valve unloader do when a compressor is loaded?

    <p>It remains closed.</p> Signup and view all the answers

    Why is a pilot type unloader used in compressors that are very large?

    <p>To vary output based on air demand.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser