For testing purposes, an NPN transistor is really ____ PN junction diode(s).

a. just one
b. two
c. three
d. four


c. three

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____ torches have three hoses connecting to the welding machine.

A. Air-cooled B. Linde C. Water-cooled D. Welding

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____________________ grains of moisture equals one pound of water.

Fill in the blank(s) with the appropriate word(s).

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If you see random scratches or "fishtails" on the work, you would probably check the:

A) Coolant filters B) Coolant flow on the workpiece C) Coolant level D) All of the above

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Flasher units are being discussed. Technician A says that only a DOT-approved flasher unit should be used for turn signals. Technician B says that a parallel (variable-load) flasher will function for turn signal usage, although it will not warn the driver if a bulb burns out. Who is right?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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