The high-voltage, low-amperage current supplied to welding machines by commercial power lines is known
as _____.
a. primary current
b. commercial current
c. ordinary current
d. secondary current
a
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Answer the following statement(s) true (T) or false (F)
1. Electrical contacts must never be permitted to open or close slowly. 2. A bimetal strip is often formed into a spiral. 3. The amount of voltage produced by a thermocouple is generally in the order of megavolts. 4. A thermistor with a negative temperature coefficient will exhibit an increase of resistance with an increase in temperature. 5. One common method of sensing temperature is by the increase of pressure of some chemicals.
There are two basic methods for determining the locked-rotor current (____ current) of a squirrel-cage induction motor depending on the information available.
a. starting
b. running
c. stopping
d. nameplate
The ____________________ is turned on if emissions increase _________ over the federal test parameter (FTP) for that vehicle.
Fill in the blank(s) with the appropriate word(s).
In a car, the horsepower rating is 39.6, and the bore is 3.518 inches. How many cylinders are there?
A. 5 B. 6 C. 7 D. 8