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  9. Q29

Telangana Police SI 2018 · Question 29 of 96

Household refrigerators work on the principle:

physics

  1. APeltier effect
  2. BSeebeck effect
  3. CJoule Thomson effectCorrect
  4. DPhoto electric effect

Answer: C. Joule Thomson effect

Explanation

[2018 PWT Q104] The vapour-compression refrigeration cycle used in household refrigerators works on the throttling (Joule-Thomson) principle; this is the standard expected answer and matches the official TSLPRB preliminary key (Booklet D).

Source: TS SI PWT 2018 official paper (Booklet D); answer cross-verified with the official TSLPRB preliminary key

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