Answer the following statements true (T) or false (F)
1) The elements required to start and sustain a fire in the flaming mode are heat, an oxidizing agent, a
reducing agent, and a chemical chain reaction.
2) Fire is an exothermic chemical reaction.
3) By-products of combustion are ash and steam.
4) A red, blue, yellow, and white diamond is used to identify hazards present when a substance
burns.
5) Heat always travels from a lower temperature to a higher one.
1) TRUE
2) TRUE
3) FALSE
4) TRUE
5) FALSE
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What diameter is designated by 1/4-20 UNC - RH?
a. 1?4 inch b. 1 cm c. 4 mm d. 20 mm
Which of these statements is TRUE about surface finish?
A) The rougher the surface, the higher the microinch finish measurement B) Cast-iron surfaces should be smoother than aluminum surfaces C) A cylinder head should be much smoother than a crankshaft journal D) The smoother the surface,the higher the microinch finish measurement
If a machine has a faulty service brake system this will be the result:
a. the machine's brakes are overheating b. the machine will roll on a hill when the parking brakes are applied c. the machine will slow down normally d. the machine will not slow down normally
Which gas is generally considered to be the lean indicator? (The higher the level of this gas, the leaner the air-fuel mixture.)
A) HC B) CO C) CO2 D) O2