Modern Refrigeration and Air
Conditioning 2025/2026 Exam Questions
1
and Verified Answers | Already Graded
A+
Power - 🧠 ANSWER ✔✔the rate at which work is performed. It is calculated
by dividing the total amount of work performed by the time during which the
work was taking place.
HP to Watts - 🧠 ANSWER ✔✔1hp = 550 ft-lbs/S = 746 watts = .75kw
1kw = 1000 watts = 1000j/S
= 1000 N•m/s = 1.33hp
1 ton of cooling - 🧠 ANSWER ✔✔12,000 btu/hr
Accumulator - 🧠 ANSWER ✔✔A tank in the suction line that prevents liquid
refrigerant from flowing through the suction line and into the compressor.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Suction Line - 🧠 ANSWER ✔✔Is tubing that carries refrigerant vapor from
evaporator to condenser. It should slope from the evaporator down to the
2
compressor.
Suction Insulation - 🧠 ANSWER ✔✔Insulation is placed over a copper
suction line to prevent the formation of condensation on the line and
prevent reduced system efficiency from heat absorbed outside the
conditioned space.
ACR Tubing - 🧠 ANSWER ✔✔Is usually charged and sealed with gaseous
nitrogen. This keeps the tubing clean and dry until it is used.
Annealing - 🧠 ANSWER ✔✔Is a process in which a substance is heated to
a specific temperature range and allowed to cool slowly.
Work Hardened - 🧠 ANSWER ✔✔Soft ACR tubing can be hardened by
oxidation or repeated bending and hammering. Work hardened copper may
crack at stress points when flared.
Stainless steel tubing - 🧠 ANSWER ✔✔Comes in typical tubing sizes for
refrigeration. Stainless steel is strong and very resistant to corrosion. It may
be easily connected to fittings by flaring or brazing.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Conditioning 2025/2026 Exam Questions
1
and Verified Answers | Already Graded
A+
Power - 🧠 ANSWER ✔✔the rate at which work is performed. It is calculated
by dividing the total amount of work performed by the time during which the
work was taking place.
HP to Watts - 🧠 ANSWER ✔✔1hp = 550 ft-lbs/S = 746 watts = .75kw
1kw = 1000 watts = 1000j/S
= 1000 N•m/s = 1.33hp
1 ton of cooling - 🧠 ANSWER ✔✔12,000 btu/hr
Accumulator - 🧠 ANSWER ✔✔A tank in the suction line that prevents liquid
refrigerant from flowing through the suction line and into the compressor.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Suction Line - 🧠 ANSWER ✔✔Is tubing that carries refrigerant vapor from
evaporator to condenser. It should slope from the evaporator down to the
2
compressor.
Suction Insulation - 🧠 ANSWER ✔✔Insulation is placed over a copper
suction line to prevent the formation of condensation on the line and
prevent reduced system efficiency from heat absorbed outside the
conditioned space.
ACR Tubing - 🧠 ANSWER ✔✔Is usually charged and sealed with gaseous
nitrogen. This keeps the tubing clean and dry until it is used.
Annealing - 🧠 ANSWER ✔✔Is a process in which a substance is heated to
a specific temperature range and allowed to cool slowly.
Work Hardened - 🧠 ANSWER ✔✔Soft ACR tubing can be hardened by
oxidation or repeated bending and hammering. Work hardened copper may
crack at stress points when flared.
Stainless steel tubing - 🧠 ANSWER ✔✔Comes in typical tubing sizes for
refrigeration. Stainless steel is strong and very resistant to corrosion. It may
be easily connected to fittings by flaring or brazing.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
