Q-01 Fdny Complete Actual Exam / 200+ Well Structured Questions And Correct Answers 2023/2024 Latest Version.

Any water present in the refrigeration side of a Freon refrigeration system causes a A) Clogged oil trap B) Frozen discharge valve C) Clogged scale trap D) Frozen expansion valve {Ans: D) Frozen expansion valve}What is the formula for piston speed? {Ans: PS = (2 x Stroke x RPM)/12}On the most common three-phase, four-wire service, the voltage between any phase and neutral should be A) 105 volts B) 120 volts C) 208 volts D) 220 volts {Ans: B) 120 volts}In an absorption system, the medium normally used to vaporize refrigerant and increase its temperature is A) water B) propane C) ethylene D) steam {Ans: D) steam}Carbonate desposits from brine on ice cans can be controlled to great extent by (A) adding sodium dichromate to the brine. (B) increasing the pH to 8 for a period of time. (C) adding calcium chloride to the brine solution. (D) decreasing the pH to slightly under 7 for a period of time. {Ans: (D) decreasing the pH to slightly under 7 for a period of time.}The refrigerant least miscible in oil is A) CO2 B) R-12 C) R-40 D) R-141 {Ans: A) CO2}In order to vary the specific