Polling _______
A) is more efficient than interrupt-driven processor operation
B) has the processor operate normally until a device signals that it requires servicing
C) requires the processor to periodically check each device to see which if any of them require servicing
D) None of the above
C
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If a conductor carrying electrical current is formed into a coil, the strength of the magnetic field generated by the wire will increase.
Answer the following statement true (T) or false (F)
When installing an underground service, a warning tape must be installed at least __________ inches above the buried service entrance conductors.
a. 8 b. 12 c. 18 d. 24
A NOR gate operates like an OR gate followed by an inverter
Indicate whether the statement is true or false
An engine has a 4.500 diameter bore and a 4.000 stroke. This engine is: __________ ?
a. Oversquare b. Rectangular c. Undersquare d. Square