Question 66Refrigeration & AC - QMED

70% to pass

What is the purpose of the pressure transducer as shown in the illustration? Illustration GS-RA-17

Diagram for USCG Refrigeration QMED: What is the purpose of the pressure transducer as shown in the illustration?...
Ait senses compressor suction pressure and controls the quench valve
Bit senses compressor discharge pressure and controls the suction modulation valves
Cit senses compressor suction pressure and controls the suction modulation valves
Dit senses compressor discharge pressure and controls the quench valve
AI Explanation

The correct answer is A) it senses compressor suction pressure and controls the quench valve. The pressure transducer shown in the illustration GS-RA-17 is used to sense the compressor suction pressure and control the quench valve. The quench valve is responsible for regulating the flow of refrigerant to the compressor, and the pressure transducer helps maintain the appropriate suction pressure by adjusting the quench valve as needed. The other options are incorrect because they do not accurately describe the function of the pressure transducer in this particular system. Option B and C mention the suction modulation valves, which are not part of the system depicted in the illustration. Option D refers to the compressor discharge pressure, which is not the parameter being monitored by the pressure transducer in this case.

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