RMO Practice Exam Questions and Complete Solutions
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Fdny z51 rmo
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Fdny Z51 Rmo
RMO Practice Exam Questions and Complete Solutions
in addition to evaporator pressure, what other force determines the flow through an automatic expansion valve - Answer: Spring Pressure
what would best describe refrigerant in the last evaporator coil? - Answer: superheated vapor
what is...
RMO Practice Exam Questions and Complete Solutions
in addition to evaporator pressure, what other force determines the flow through an automatic expansion valve - Answer: Spring Pressure
what would best describe refrigerant in the last evaporator coil? - Answer: superheated vapor
what is the auxiliary oil pump used for ? - Answer: starting up
what is the steam jet on a surface condenser used for? - Answer: create proper exhaust vacuum
what is used to track the speed of a steam turbine? - Answer: tachometer
what is the reason to put two low side floats in parallel? - Answer: each one feeds its own evaporator
how do you increase pressure of a centrifugal compressor? - Answer: increase the speed of the motor
to raise 10 ILbs of water 1 degree, how many BTUs do you need? - Answer: 10 BTUs
on the high side of the system, liquid stop valves should be placed.. - Answer: in front and after the sight
glass
a reciprocating compressor shaft seal is made up of.. - Answer: metal
where do non Condensables and moisture collect - Answer: condenser
when is the centrifugal water pump considered a "Lift Pump" ? - Answer: when the suction inlet of the water source is below the pump level if you are using a recovery machine to recover refrigerant from the system without using the system compressor, what kind of recovery machine is that? - Answer: Self Contained
an open type compressor is keeping the refrigerant from escaping by tightening a seal made of .. - Answer: Carbon and metal
if refrigeration oil is measured to have a viscosity and the viscosity number is low, what does that mean?
- Answer: flow easily, smoothly
if you need to add another pump online, how do you do it? - Answer: open suction side valve and put discharge valve in throttle position
the automatic expansion valve is used instead of a TEV. it maintains a constant pressure on evaporator. another function it has is.. - Answer: on water type evaporators, freezing will not occur
if 10 Btus is transferred to 10 LBs of water, increase in temperature is closest to.. - Answer: 1 degree F
the unit used to measure the amount of electrons flowing past a certain point in an electrical circuit is called? - Answer: Ampere
before using a voltmeter, the technician should always - Answer: set the range selector to a setting higher than the voltage expected to be read
as an RMO, you enter a system of a reciprocating refrigeration unit. this system has a 150 LB. refrigerant charge. you would expect to find stop valves.. - Answer: on the inlet supply and discharge line
regardless of the safety classification of the refrigerant in use, in the event of refrigerant to escape, the RMO should be aware of.. - Answer: Oxygen Deprivation
when you are finished leak testing with nitrogen and R-22, the next step would be.. - Answer: vent refrigerant and nitrogen into open air
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