Exam (elaborations)
Written Exam Questions and Answers-FDNY RMO
- Course
- Institution
Written Exam Questions and Answers-FDNY RMO
[Show more]
Seller
Follow
Content preview
Written Exam FDNY RMOThe efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following, a
more efficient centrifugal compressor operation results from:
Lowering the condensing pressure
The heat removed from the refrigerant in a condenser is:
Sensible and Latent Heat
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You
have been assigned to withdraw refrigerant for storage in suitable containers. According to the New
York City fire code, You must ensure that the containers:
Are approved by the US Department of Transportation
Which of the following best describes how the cylinder unloader work?
Keep in the suction Valve opened while the compressor is in the return stroke
In most semi Hermetic compressors,the suction vapor is used to:
,Cools the motor
The amount of refrigerant that flows through the orifices of a economizer is determined by the:
Difference between the high side and low side pressure
The installation of an inline refrigerant cleaning system is advisable
To remove impurities from the system
The type of refrigerant system that is least likely to leak refrigerant into the building space that are being
cooled
The indirect System
The suction pressure of a reciprocating compressor is 65 psig. the discharge pressure of this compressor
is 120 psig. the atmospheric is 14.7 psi. The compression ratio for the given condition is closest to:
1.69
A superheated Vapor is a:
Dry vapor above the saturation temperature
A refrigerant engineer verifies that a condenser water pump is cavitating. of the following the most
likely cause for this condition is:
A faulty cooling tower water level controller
, A centriugal water pump is known as a lift pump when the:
the water supply to the pump suction inlet is below the pump level
A TEV is used to maintain constant:
Evaporator Superheat
The chilled water supply to the building is 55F. If the chiller is being used for human comfort, should you
be concerned about this, and why?
Yes,this temperature is too high for human comfort purpose
The packing gland of a centrifugal pump serves to:
The drip part of the packing gland gives the evidence that there is water in the pump
Capacity control of a reciprocating hermetic compressor is typically achieved through
operation of the hot gas bypass valve
The most important reason to sub-cool the refrigerant in the condenser is to ensure that:
A pure liquid refrigerant will enter the metering device
A refrigeration engineer is logging reading from a reciprocating system. Compressor discharge
temperature have dropped significantly and the suction line pressure is high. which of the following that
may causing this set of condition.
An expansion valve that is open to wide
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Rosetopgrader. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now