Variable capacitors normally have a dielectric of _____.
A. air
B. mica
C. Teflon
D. glass
Answer: A
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Most capacitors used in industry, especially for power factor correction, are called ____ capacitors.
A. conducting B. DC C. polarized D. nonpolarized
Air filters can remove particles and dirt as small as ________
A) 30 to 40 microns B) 5 to 10 microns C) 10 to 25 microns D) 40 to 50 microns
An output gate is connected to four input gates; the circuit does not function. Preliminary tests with a DMM indicate that power is applied; scope tests show that the primary input gate has a pulsing signal, while the interconnecting node has no signal. The four load gates are all on different IC's. Which instrument will best help isolate the problem?
A) Current tracer B) Logic analyzer C) Logic probe D) Oscilloscope
What is piston slap?
A. The piston contacting the valves at high revs. B. Loose wrist pins chattering when the engine is cold. C. Late combustion in cold engines causing a slapping noise. D. Tilting of the piston when it is thrust loaded by cylinder combustion pressure.