Z-51 Written Test (Tauris questions)

Z-51 Written Test (Tauris questions) The total amount of heat to be removed from the refrigerant equals the heat picked up in the: A) Evaporator less the heat given up in the muffler. B) Evaporator plus the head of included non-condensables. C) Evaporator plus the heat of compression. D) Evaporator. - CORRECT ANSWER C) Evaporator plus the heat of compression. Select the INCORRECT statement regarding requirements of commercial cooking exhaust systems A) Company servicing the system myst be certified by the FDNY, but the individual technicians are not. B) A permit is required to operate commercial cooking systems. C) The exhaust systems must be cleaned periodically. D) Instructions for manual operation of the fire extinguishing system must be posted. - CORRECT ANSWER A centrifugal water pump is known as a lift pump when A) the pump is started iwht the suction valve open. B) the water supply to the pump suction inlet is below the pump level. C) the pump lifts the water into the pump. D) the discharge head exceeds 150 feet. - CORRECT ANSWER You have a cold front and a sudden drop in temperature. The thermostat will cause the solenoid valve to A) Close and pump the compressor down and shut down on low pressure. B) Open and the compressor goes down on high pressure. C) Open and the compressor will continue to run at a reduced speed. D) Close and the compressor will stop on high pressure. - CORRECT ANSWER Which of the following would you connect to the middle port on a gauge manifold? A) King valve. B) Vacuum pump. C) Solenoid valve. D) Suction or discharge valves. - CORRECT ANSWER B) Vacuum pump. An automatic expancion valve maintains a c