Practice Test 2

The following test is for practice, these are not actual exam questions, but are similar to what you may find on an exam. Answers can be found on the next page.

  1. Convert the following dimensions to metres: 24'3" x 29'4".
    1. 7.4 x 8.94
    2. 8 x 10
    3. 72 x 90
    4. 7.5 x 9
  2. The following best describes specific heat of a substance:
    1. The energy required to change the temperature of air without affecting its moisture content
    2. The energy required to change the temperature of 1 gram of water by 1°C
    3. The energy required to change the state of 1 gram of water without changing its temperature
    4. The energy required to raise a gram of water 1 metre
  3. Insulation with an R value of 12 would have a U value of:
    1. 11
    2. 2.11
    3. 0.833
    4. 0.083
  4. The following best describes convection:
    1. Heat transfer due to direct contact between two materials of differing temperature
    2. Heat transfer within an oven to accelerate cooking or baking
    3. Heat transfer due to movement within a fluid such as water or air
    4. Heat transfer due to rising heat
  5. Internal heat gain is produced by the following sources:
    1. Furnaces and boilers
    2. Excessive exercise
    3. Sunlight coming through windows
    4. Humans, cooking and refrigeration
  6. For a wall with an RSI value of 1.2, what is the rate of heat loss through an area of 1 m² when the inside and outside temperatures are 22 and -18°C, respectively?
    1. 3.33 W
    2. 33.3 W
    3. 48 W
    4. 0.03 W
  7. Which two criteria best describe the conditions necessary for airflow?
    1. Gravity and humid air
    2. Pressure difference and physical connection
    3. Fan operation and ductwork
    4. Temperature difference and physical connection
  8. The following best describes reverse stack effect:
    1. Wind creates a pressure difference on the exterior of the house
    2. Induced draft furnace in the basement draws air through openings on the second floor
    3. Exhaust fans create negative pressure that draws air down the chimneys of mechanical equipment
    4. The tendency to draw air in at the top of the building when temperatures inside are cooler than outside
  9. The following best describe the conditions at dew point:
    1. The tidal pull of the rising sun draws water from the ground
    2. Dry air contacts a wet surface
    3. Humid air cooling past its saturation point
    4. Steam condensing on the inside of a radiator
  10. At a constant temperature, how much vapour does air contain at 60% R.H.?
    1. 0.6 g
    2. 60% of the vapour it would contain at 20°C
    3. 60% less than the maximum
    4. 60% of the vapour it could contain at that temperature