Piston damage is MOST likely to be caused by which of these?
a. Valves hitting the piston head
b. Abnormal combustion
c. Lugging the engine during operation
d. High engine speeds that can break piston heads
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Isolated power systems are used to prevent _____.
a. power interruption b. arc faults c. power spikes d. power surges
A bridge that consists of two independent beams that extend from opposite banks toward the center of the waterway is a _____.
a. suspension bridge b. cantilever bridge c. box girder bridge d. cable-stayed bridge
Standard operating pressures on an R-22 window air conditioner are about ____.
A. 65 psig on the low side and 210 psig on the high side B. 80 psig on the low side and 210 psig on the high side C. 40 psig on the low side and 250 psig on the high side D. 35 psig on the low side and 200 psig on the high side
A 3rd order high-pass filter has a rolloff rate of
A) -30 dB per decade B) -60 dB per decade C) -20 dB per decade D) -20 dB per octave