Electric motors give off _________ while running.

Electric motors give off _________ while running.

a) sensible heat
b) latent heat
c) latent and sensible heat
d) no heat to the atmosphere
e) solar heat




Answer: A

Thermal transmittance (U) may be defined as the:

Thermal transmittance (U) may be defined as the:

a. Quantity of heat flow per unit time (in Watts)
b. Ability of a material of uniform thickness to transmit heat (W/m°C)
c. Heat transfer through a one-metre cross-sectional area of a particular material with defined surfaces (W/m2°C)
d. Heat flow through one square metre of a material, per unit of thickness and unit of time when exposed to a differential temperature of 1 degree Celsius (W/m2°C)
e. Reciprocal of thermal conductance (m°C/W)





Answer: D

Heat lost from a building is:

Heat lost from a building is:

a. Dependent on the shape of the openings in a building
b. Independent of indoor air temperature
c. Greater on windier days
d. Independent of outside temperature
e. Dependant on barometric pressure

Answer: C

To calculate the heat gain from fluorescent lighting, add the wattage ratings of the lamps and multiply by:

To calculate the heat gain from fluorescent lighting, add the wattage ratings of the lamps and multiply by:

a. 0.2
b. 0.5
c. 4.1
d. 1.2
e. 2.1





Answer: D

Thermal resistance (R) may be defined as the:

Thermal resistance (R) may be defined as the:

a. Quantity of heat flow per unit time (in Watts)
b. Ability of a material of uniform thickness to transmit heat (W/m°C)
c. Heat transfer through a one-metre cross-sectional area of a particular material with defined surfaces (W/m2°C)
d. Heat flow per unit time through one square metre of a material, when exposed to a differential temperature of 1 degree Celsius (W/m2°C)
e. Reciprocal of thermal conductance (m2°C/W)





Answer: E

Heat load from people in a room is mostly affected by:

Heat load from people in a room is mostly affected by:

a. The size of the people
b. Smoking
c. The number of people
d. The activity of the people
e. The building occupancy class






Answer: D

Thermal conductivity (?) may be defined as the:

Thermal conductivity (?) may be defined as the:

a. Quantity of heat flow per unit time (in Watts)
b. Ability of a material of uniform thickness to transmit heat (W/m°C)
c. Heat transfer through a one-metre cross-sectional area of a particular material with defined surfaces (W/m2°C)
d. Heat flow per unit time through one square metre of a material when exposed to a differential temperature of 1 degree Celsius (W/m2°C)
e. Reciprocal of thermal conductance (m°C/W)





Answer: B

Thermal transmission may be defined as the:

Thermal transmission may be defined as the:

a. Quantity of heat flow per unit time (in Watts)
b. Ability of a material of uniform thickness to transmit heat (W/m°C)
c. Heat transfer through a one-metre cross-sectional area of a particular material with defined surfaces (W/m2°C)
d. Heat flow per unit time through one square metre of a material, of a particular composition and thickness, when exposed to a differential temperature of 1 degree Celsius (W/m2°C)
e. Reciprocal of thermal conductance (m°C/W)





Answer: A

Heat gains by conduction are calculated on the assumption that:

Heat gains by conduction are calculated on the assumption that:

a. Solar heat varies from hour to hour as sun changes position
b. Solar heat should be considered separately
c. Construction details are irrelevant
d. The "U" value is not used
e. Heat is conducted at the same rate through roofs, walls, and windows.




Answer: B

The ventilation rate of a building is determined based upon the greater of the

The ventilation rate of a building is determined based upon the greater of the

a. Solar heat rate and CFM rate per person
b. Conduction rate per person and solar heat rate
c. CFM rate and conduction rate per person
d. Infiltration rate and CFM rate per person
e. None of the above





Answer: D

The quickest method of calculating air infiltration into a building is the

The quickest method of calculating air infiltration into a building is the

a. air change method
b. crack method
c. solar method
d. conduction method
e. building pressurization method






Answer: A

Two methods of calculating air infiltration into a building are the:

Two methods of calculating air infiltration into a building are the:

a. Crack and solar method
b. Air change and solar method
c. Crack and conduction method
d. Air change and crack method
e. Conduction and solar method





Answer: D

Heat is lost from a building in the following ways:

Heat is lost from a building in the following ways:

a. Convection, evaporation and radiation
b. Infiltration, condensation and conduction
c. Evaporation, conduction and radiation
d. Conduction, radiation and convection
e. Infiltration, evaporation and convection






Answer: D

A kitchen exhaust fan reduces the calculated heat gain from the cooking appliances it serves, by a factor of

A kitchen exhaust fan reduces the calculated heat gain from the cooking appliances it serves, by a factor of

a. 10%
b. 25%
c. 50%
d. 60%
e. 75%





Answer: C