Part 7 Flashcards
(10 cards)
- Dilution air is:
a. Air needed for excess air
b. Air to start combustion
c. Air to cool hot flue gases (c)
d. Air to ensure flame
- Which expression best describes a control intended to prevent an unsafe condition of temperature, pressure or liquid level?
a. Safety limit control (a)
b. Roll out switch
c. High/low pressure switch
d. Fan control
- A G3/GT2 (Introductory) Technician is allowed to:
a. Activate residential appliances only 4% to 15%
b. Activate all new appliances
c. Reactivate existing installations of appliances up to 400,000 Btuh (c)
d. Initially activate appliances up to 400,000 Btuh input
- Combustion air which supplied upstream from the point of ignition is?
a. Mixing Air
b. Dilution Air
c. Primary Air
d. Secondary Air (d)
- Energy in the form of stationary electric charge is known as:
a. AC
b. DC
c. Static Electricity (c)
d. All of the above
- Which of the following observations is true?
a. Appliances must be installed with a minimum of 36 inches (1m) clearance on the side(s) where service is required
b. Appliances installed outdoors must have a minimum 24 inches (600mm) services clearance to the burner access panel only
c. Appliances must be installed with a minimum 24 inches (600mm) clearance on every side
d. Appliances must be installed with a minimum 24 inches (600mm) clearance on the side(s) where services is required (d)
- What are the three basic constitutions of an atom?
a. Proton, Nucleus, Electron
b. Proton, Electron, Neutron (b)
c. Neutron, Proton, Matter
d. Electron, Neutron, Nucleus
- What temperature differentiates between hard and soft solders?
a. 800 F
b. 880 F
c. 1000 F (c)
d. 1200 F
- For self-protection, you would need?
a. Hard hat, gloves, glasses
b. Glasses, boots, respiratory
c. Respiratory, gloves, hard hat
d. All of the above (d)
