Boilers Quiz

The warm air distribution system that is usually located along the center of the building is the:

• balanced supply/return

• extended plenum

• perimeter loop

• perimeter radial

Fernando needs to check the steam sustem at the point where the pressure is the highest. He should check the___where heat is____

• boiler; added

• boiler;removed

• radiator;added

• radiator;removed

Latent heat of fusion is the amount of heat required for a substance to change from a:

• gas to liquid

• liquid to gas

• solid to gas

• solid to liquid

One of the largest potential energy waters in a steam distribution system is:

• leaking steam traps

• faulty throttling valves

• air in the system

• uninsulated condensate lines

You have been told that the cost of heating oil is increasing by 4%. If the current cost of oil is $1.04, the new price will be:

• $1.43

• $1.16

• $1.08

• $1.04

The formula for the area of a circle is:

• 2 x p x R

• 4 ÷ 3p x R3

• Dx p ÷ 2

• π x R²

The boiler operator should watch at all times for all of the following except:

• leaks in steam, water, and fuel connections

• proper fuel air ratio

• operating pressures and temperatures

• incoming water quality

One advantage of hydronic heating over steam heating is:

• condensate returns are smaller

• less building damage may result from a leak

• piping pitch or slope is not as critical

• pressure and temperature are easily controlled

When steam or hot water is used as the heat source in a secondary warm air heating system, the system may be classified as a:

• direct-fired boiler

• fin-coil heat exchanger

• vertical forced air

• low-boy air

Boilers that have hot gases circulating through tubes surrounded by water are called:

• firetube boilers

• high-pressure boilers

• low-pressure boilers

• water-tube boilers