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Post-UTME Physics 2017 Objective — Question 2

Question 2 of 20 from the Post-UTME Screening (Post-UTME) Physics 2017 Objective paper, with the correct answer and a full explanation.

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The main function of the steam-trap incorporated in the apparatus for determining the specific latent heat of vaporization of water is to

  • A. prevent the leakage of heat energy by convection and conduction
  • B. act as a heat reservoir for the apparatus
  • C. trap all the steam entering it.
  • D. prevent the passage of condensed steam.Correct

Explanation

The steam trap prevents already-condensed water (rather than dry steam) from passing through and being wrongly counted in the measurement.

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