HVAC lvl 2 Compressors 03302 (25 Questions) Test with Verified Solutions
14 views 0 purchase
Module
HVAC lvl 2 Compressors 03302
Institution
HVAC Lvl 2 Compressors 03302
HVAC lvl 2 Compressors 03302 (25 Questions) Test with Verified Solutions
Floodback happens when what enters the crankcase of the compressor?
A. Water
B. Liquid refrigerant
C. Vapor refrigerant
D. Acid - Answer-B. Liquid refrigerant
What component helps protect the compressor from f...
HVAC lvl 2 Compressors 03302 (25
Questions) Test with Verified
Solutions
Floodback happens when what enters the crankcase of the compressor?
A. Water
B. Liquid refrigerant
C. Vapor refrigerant
D. Acid - Answer-B. Liquid refrigerant
What component helps protect the compressor from floodback?
A. Oversized expansion valve.
B. Crankcase heater
C. Motor burn out switch.
D. Suction line. - Answer-B. Crankcase heater
What value is used when adjusting the CPR so that the compressor amp draw does not
exceed it?
A. MCC
B. TENV
C. ACR
D. RLA - Answer-D. RLA
Current imbalance between any two legs of a three phase motor should not exceed.
A. 2%
B. 4%
,C. 8%
D. 10% - Answer-D. 10%
During single phasing, what will the remaining two phases current increase to?
A. Half the normal running current
B. 1-1/2 times the normal running current
C. 4 times the normal running current
D. Twice the normal running current - Answer-B. 1-1/2 times the normal running current
The internal line break overload is often used in...
A. Single-phase hermetic compressor
B. Triple-phase hermetic compressor
C. Semi-hermetic compressor.
D. Open drive compressor - Answer-Single-phase hermetic compressor
High pressure and low pressure switches are usually wired...
A. In a delta configuration
B. In parallel with the contactor coil
C. To the evaporator coil
D. In series with the contactor coil - Answer-D. In series with the contactor coil
On which leg of a three-phase compressor should total compressor current be
measured?
A. Common
B. Neutral
C. Run
D. It doesn't matter - Answer-D. It doesn't matter
Which compressor type has the motor separated from the compressor?
, A. Open Drive
B. Scroll
C. Rotary
D. Welded hermetic - Answer-A. Open Drive
On which leg of a single-phase motor should total compressor current be measured?
A. Neutral
B. Start
C. Run
D. Common - Answer-D. Common
When is a technician most likely to see foaming in an oil-level site glass?
A. When the compressor shuts down
B. Just before the compressor starts
C. When the compressor starts
D. After several minutes of operating time - Answer-C. When the compressor starts
If a systems refrigerant lines are long...
A. The compressor may not be able to complete a pump-down cycle
B. The compressor cannot overcome the pressure drop
C. More time should be allowed between compressor starts
D. The system pressures will never equalize - Answer-A. The compressor may not be
able to complete a pump-down cycle
Refrigerant lines that are buried underground can cause...
A. Copper tubing to last only several years
B. The pressure to drop significantly
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 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 Perfectscorer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £10.55. You're not tied to anything after your purchase.
