NCCER Module 5 (Introduction to Cooling) - Questions with Verified Answers

NCCER Module 5 (Introduction to Cooling) - Questions with Verified Answers Which of the following metering devices response to changes in the superheat of the refrigerant vapor leaving the evaporator? Thermostatic expansion valve What refrigerant piping technique helps to get oil to flow up a suction line riser along with vapor? Installing a trap at the bottom of the riser The device installed to prevent liquid refrigerant from returning to the compressor crank case during system operation is the Suction line accumulator To close a control circuit and start a system a remote bulb thermostat depends on a Refrigerant filled bulb that response to temperature changes Which of the following control devices is often used in both a primary and a secondary control roll? Pressure switches Immaterial that readily and actively absorbs water is considered Hygroscopic A device used to prevent the reverse flow of a liquid is a Check valve