HVAC Unit 3
A properly running compressor need to have _______ and its inlet ______ at its outlet
A. One hundred% vapor, 100% vapor
B. A hundred% liquid, one hundred% liquid
C. 100% vapor, one hundred% liquid
D. One hundred% liquid, a hundred% vapor - ANS-D. One hundred% liquid, 100% vapor
A refrigeration device that is supposed to offer consolation cooling might be categorized as what
kind of gadget?
A. High Temp
B. Medium Temp
C. Low Temp
D.Ultra-Low Temp - ANS-C. Low Temp
A refrigeration machine that maintains a area at a temperature between 35 degree F and 40
degree F would be categorised as what kind of gadget?
A. High Temp
B. Medium Temp
C. Low Temp
D. Ultra-Low Temp - ANS-B. Medium Temp
If the evaporating pressure become 76 psig for R-22 and the compressor inlet temp became
sixty five F, what might be the total superheat coming into the compressor?
A. 11 F
B. 21 F
C. 10 F
D. 20 F - ANS-D. 20 F
If the evaporator outlet temp on an R-410A device is 50 F and the evaporator superheat is 10 F,
what is the evaporating strain of the refrigerant in this system?
A. 143 psig
, B. 118 psig
C. Eighty four psig
D. 62 psig - ANS-B. 118 psig
Of the subsequent compressors, that's a residential compressor that is forgiving with regards to
having liquid entering it?
A. The reciprocating compressor
B. The scroll compressor
C. The rotary compressor
D. The screw compressor - ANS-B. The scroll compressor
Of the following refrigerants which has the bottom worldwide warming capability (GWP)
A. R- 410A
B. R- 134a
C. R- 407C
D. R-1234yf - ANS-D. R-1234yf
One of the demanding situations of plotting an R - 407C device on a pressure/enthalpy chart is
that the refrigerant...
A. Is a single compound refrigerant with one strain for each temperature
B. Has a large temperature drift
C. Is a binary combo of R- 32 and R- a hundred twenty five, making it risky.
D. Is easily improper for R- 134A and R- 410A - ANS-B. Has a significant temperature go with
the flow
One ton of refrigeration is equal of moving warmth at a price of..
A. 1200 Btu/min
B. 12,000 Btu/min
C. 1200 Btu/Hr
D. 12,000 Btu/Hr - ANS-D. 12,000 Btu/Hr
A properly running compressor need to have _______ and its inlet ______ at its outlet
A. One hundred% vapor, 100% vapor
B. A hundred% liquid, one hundred% liquid
C. 100% vapor, one hundred% liquid
D. One hundred% liquid, a hundred% vapor - ANS-D. One hundred% liquid, 100% vapor
A refrigeration device that is supposed to offer consolation cooling might be categorized as what
kind of gadget?
A. High Temp
B. Medium Temp
C. Low Temp
D.Ultra-Low Temp - ANS-C. Low Temp
A refrigeration machine that maintains a area at a temperature between 35 degree F and 40
degree F would be categorised as what kind of gadget?
A. High Temp
B. Medium Temp
C. Low Temp
D. Ultra-Low Temp - ANS-B. Medium Temp
If the evaporating pressure become 76 psig for R-22 and the compressor inlet temp became
sixty five F, what might be the total superheat coming into the compressor?
A. 11 F
B. 21 F
C. 10 F
D. 20 F - ANS-D. 20 F
If the evaporator outlet temp on an R-410A device is 50 F and the evaporator superheat is 10 F,
what is the evaporating strain of the refrigerant in this system?
A. 143 psig
, B. 118 psig
C. Eighty four psig
D. 62 psig - ANS-B. 118 psig
Of the subsequent compressors, that's a residential compressor that is forgiving with regards to
having liquid entering it?
A. The reciprocating compressor
B. The scroll compressor
C. The rotary compressor
D. The screw compressor - ANS-B. The scroll compressor
Of the following refrigerants which has the bottom worldwide warming capability (GWP)
A. R- 410A
B. R- 134a
C. R- 407C
D. R-1234yf - ANS-D. R-1234yf
One of the demanding situations of plotting an R - 407C device on a pressure/enthalpy chart is
that the refrigerant...
A. Is a single compound refrigerant with one strain for each temperature
B. Has a large temperature drift
C. Is a binary combo of R- 32 and R- a hundred twenty five, making it risky.
D. Is easily improper for R- 134A and R- 410A - ANS-B. Has a significant temperature go with
the flow
One ton of refrigeration is equal of moving warmth at a price of..
A. 1200 Btu/min
B. 12,000 Btu/min
C. 1200 Btu/Hr
D. 12,000 Btu/Hr - ANS-D. 12,000 Btu/Hr
