The greatest advantage of the carburizing process is that:
A) Low carbon steels can be made very hard on the surface only, while the core remains soft and tough
B) A case hardened part can remain as hard as Rc60 all the way through without the need for tempering and still be just as hard as a similar tempered part
C) Surface hardening can be done on any ferrous metal that contains sufficient carbon. Induction heating and flame hardening are two methods used. Lathe ways and gears are examples
D) It makes possible the hardening of thicker sections completely through while using an oil quench to avoid distortion
A
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Figure 41-7
In the accompanying figure, speed control for a wound rotor motor is obtained by placing resistance in the secondary or rotor circuit.
Answer the following statement true (T) or false (F)
Using a sketch, explain why a tempered glass sheet is stronger than an annealed glass sheet.
What will be an ideal response?
_________ is used on drawing to save time of the technician and space on drawings.
Fill in the blank(s) with the appropriate word(s).
The throttle plate is spring loaded to hold the throttle slightly open how far?
A) 8% to 10% B) 16% to 20% C) 22% to 28% D) 3% to 5%