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