Fill in the blank(s) with the appropriate word(s).
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In a typical air-over-hydraulic brake system, depressing the treadle causes which of the following?
A. Hydraulic fluid flows through quick release valves B. Air pressure forces the pistons of each wheel cylinder outward C. An LPV redistributes air pressure to front and rear brakes D. Air pressure is sent to the booster assemblies
A scale ruler is used in ____.
A. determining the number of outlets B. measuring blueprint scales C. determining the location of outlets D. converting units
The speed of an AC servo motor is controlled by the __________.
A. frequency of the AC supply B. amplitude of the signal supplied to the main winding C. amplitude of the signal supplied to the auxiliary winding
Which function is performed by the diodes placed across the semiconductor switches in the inverter?
A. protects the semiconductor from a voltage spike B. provides a path for current when regeneration occurs C. both a and b