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ME 200 Exam 1 Questions and Answers
100% Pass
For a substance near saturation dome (on either side of it/under it), phase can always be
determined knowing pressure and temperature. (True or False) - ANS False
For a substance near saturation dome (on either side of it/under it), phase can always be
determined knowing pressure and specific volume. (True or False) - ANS True
At critical point, the specific internal energy of saturated liquid is equal to specific internal
energy of saturated vapor. (True or False) - ANS True
A constant mass system, having negligible changes in KE and PE, is supplied with 20 kJ of work
and heat transfer of 50 kJ occurs from the system to surroundings. Does the energy of the
system (Decrease or Increase or Remain the same)? - ANS Energy Decreases
A closed, rigid tank contains a saturated liquid-vapor mixture (V < Vcritical). When the tank is
heated to a pressure below critical pressure, the possible final phase(s) is/are (Saturated liquid-
vapor mixture, Saturated liquid, Saturated vapor, Compressed liquid, Superheated vapor). -
ANS Saturated liquid-vapor mixture, Saturated liquid, or Compressed liquid
Consider a lightbulb powered by electricity. Assume positive sign for heat transfer into the
system and for work output from the system. which of the following is true considering
lightbulb as the system?
W > 0, Q > 0
©FYNDLAY 1
ME 200 Exam 1 Questions and Answers
100% Pass
For a substance near saturation dome (on either side of it/under it), phase can always be
determined knowing pressure and temperature. (True or False) - ANS False
For a substance near saturation dome (on either side of it/under it), phase can always be
determined knowing pressure and specific volume. (True or False) - ANS True
At critical point, the specific internal energy of saturated liquid is equal to specific internal
energy of saturated vapor. (True or False) - ANS True
A constant mass system, having negligible changes in KE and PE, is supplied with 20 kJ of work
and heat transfer of 50 kJ occurs from the system to surroundings. Does the energy of the
system (Decrease or Increase or Remain the same)? - ANS Energy Decreases
A closed, rigid tank contains a saturated liquid-vapor mixture (V < Vcritical). When the tank is
heated to a pressure below critical pressure, the possible final phase(s) is/are (Saturated liquid-
vapor mixture, Saturated liquid, Saturated vapor, Compressed liquid, Superheated vapor). -
ANS Saturated liquid-vapor mixture, Saturated liquid, or Compressed liquid
Consider a lightbulb powered by electricity. Assume positive sign for heat transfer into the
system and for work output from the system. which of the following is true considering
lightbulb as the system?
W > 0, Q > 0
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