The unit for measuring electrical current is _____.
A. amperes
B. ohms
C. volts
D. watts
Answer: A
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What is the best way to find delays in shop production?
A. Talking with each technician throughout the workday for a job by job update and their opinion on whether a delay will occur B. Visiting the parts specialist for order updates because parts arrival is connected to shop production C. Monitoring the repair order tracking sheet times for delays D. Requiring the technician team leader to visit the service consultant every half hour with a production update
A shop-built tool that offers an alternative method for laying out miters is the _____.
a. miter box b. contour marker c. cutback template d. horseshoe
It is important to the HVACR technician to understand the changes of state of matter because:
A) NATE certification exams require a good understanding of the Periodic Table of Elements. B) The refrigerant recovery process requires a technician to know which state the matter is in to ensure that only like refrigerants are put into a recovery container. C) Technicians are required to mix refrigerants to attain proper pressures and temperatures when charging refrigeration systems. D) The cooling and heating process requires a change of state of matter in some form.
What is the effect of an increase in the cooling load on a TXV?
a. The superheat decreases, causing the TXV to feed more refrigerant. b. The superheat decreases, causing the TXV to reduce the flow of refrigerant. c. The superheat rises, causing the TXV to feed more refrigerant. d. The superheat rises, causing the TXV to reduce the flow of refrigerant.