Practice Quiz 19

Choose the best answer

  1. Which of the following is a correct statement.
    1. One unit of degree Fahrenheit is equal to ( 1 ⁄ 100 ) th
      of the temperature difference between boiling
      and freezing point of water.
    2. The boiling point of water is 100 degree Kelvin
    3. The SI unit of temperature is the degree Celsius.
    4. One unit of degree Fahrenheit is equal to one unit of degree Kelvin
    5. One unit of degree Celsius is equal to ( 1 ⁄ 100 ) th
      of the temperature difference between boiling
      and freezing point of water.
    Answer: E

  2. Which of the following is not a correct statement?
    1. The change in length of a metal is directly
      proportional to the change of its temperature.
    2. The length of a metal is directly propotional to
      the change of its temperature.
    3. Coefficient of areal expansion is approximately
      equal to twice of coeficient of linear expansion.
    4. Coefficient of volume expansion is approximately
      equal to three times of coeficient of linear
      expansion.
    5. The change in the length of a metal due to
      change of temperature is directly
      proportional to the length of the metal.
    Answer: B

  3. 54 �C is equal to
    1. 22.737 �F
    2. 143.805 �F
    3. 223.061 �F
    4. 63.353 �F
    5. 129.2 �F
    Answer: E

  4. 344 �K is equal to
    1. 159.8 �F
    2. 222.191 �F
    3. 269.016 �F
    4. 301.938 �F
    5. 77.509 �F
    Answer: A

  5. A thermometer is based on the change of volume
    with change in temperature of a fluid in a tube.
    The fluid rises to a level of 0.045 m when the temperature is
    10 � C and to a level of 0.145 m when the temperature is
    16 � C. Obtain the calibrating equation; that is a formula
    for the temperature ( T ) in terms of the fluid level ( L ).
    1. T = 79.98 * L + 8.278
    2. T = 60 * L + 7.3
    3. T = 51.36 * L + 7.3
    4. T = 51.36 * L + 4.701
    5. T = 60 * L + 8.278
    Answer: B

  6. A thermometer is based on the change of volume
    with change in temperature of a fluid in a tube.
    The fluid rises to a level of 0.035 m when the temperature is
    7.5 � C and to a level of 0.11 m when the temperature is
    19.5 � C. Determine the reading of the thermometer when
    the fluid rises to a level of 0.225 m.
    1. 37.9 �C
    2. 24.067 �C
    3. 46.314 �C
    4. 35.778 �C
    5. 50.9 �C
    Answer: A

  7. Calculate the change in length of an aluminum
    rod of length 9 m when its temperature increases
    by 80 �C. (Coefficient of linear expansion of aluminum
    is 2.4e-5 ⁄ �C)
    1. 2.093e-2 m
    2. 0.959e-2 m
    3. 1.728e-2 m
    4. 1.182e-2 m
    5. 2.919e-2 m
    Answer: C

  8. An aluminum rod has a length of 5 m at a
    temperature of 20 �C. What should its temperature
    be if its length is to increase by 0.004 m. (Coefficient of
    linear expansion for aluminum is 2.4e-5 ⁄ �C).
    1. 29.714 �C
    2. 35.299 �C
    3. 75.988 �C
    4. 53.333 �C
    5. 66.954 �C
    Answer: D

  9. A circular plate made of steel has a radius of 0.1 m
    at a temperature of 20 �C. Calculate its radius at a temperature
    of 160 �C. (Coefficient of linear expansion of
    steel is 1.1e-5 ⁄ �C)
    1. 0.1003 m
    2. 0.1005 m
    3. 0.1002 m
    4. 0.1 m
    5. 0.1006 m
    Answer: C

  10. Calculate the change in volume of a solid aluminum
    cube of side 0.065 m when its temperature changes by
    200 �C. (Coefficient of linear expansion of
    aluminum is 2.4e-5 ⁄ �C)
    1. 5.141e-6 m 3
    2. 1.821e-6 m 3
    3. 3.955e-6 m 3
    4. 6.986e-6 m 3
    5. 2.503e-6 m 3
    Answer: C