14 Questions
What is the purpose of the start and stop control method for a compressor?
To maintain a constant pressure in the system
Why is it important to install a sufficiently large receiver in a compressor system using start and stop control?
To prevent the compressor from starting and stopping continuously
How does the unloader protect the motor from overloading during compressor startup?
By unloading the compressor automatically
Why is a suitable unloader needed for a compressor using start and stop control?
To load and unload the compressor automatically
What is the function of the unloader valve in a compressor system?
To release trapped compressed air
Why is dual control not used in electric motor-driven compressors?
It is unnecessary for these compressors
What is the purpose of the unloader valve in a reciprocating compressor?
To reduce pressure in the discharge pipe to atmospheric pressure
How does the pilot type unloader differ from the load/unload control system?
It allows for variable output based on air demand
Which of the following statements is true about the inlet valve unloader?
It is ineffective when unloaded
What is the purpose of a variable speed control method in a compressor system?
To match compressor speed with system demand
How does dual capacity control differ from load/unload control?
It involves shutting down when running without loading for a set time
In what situation would a pilot valve in an inlet valve unloader lift off its seat?
When the system demand for air decreases
What happens to the electric motor in a load/unload control system during operation?
The electric motor starts frequently
Which component ensures that air receiver pressure is maintained in a reciprocating compressor system?
The check valve in the line
Test your knowledge on the various methods used to control the output of a compressor. Learn about start and stop control, load/unload control, dual control, variable speed control, and constant speed control.
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