QUADRANT -- A slotted segmental guide through
which an adjusting lever works. It is provided with means for locating the
lever in any desired angular position. See link-motion.
QUADRUPLE EXPANSION ENGINE -- A steam engine in
which the steam expands successively in four cylinders of increasing size, all
working on the same crankshaft.
QUALITY CONTROL-- A form of inspection involving sampling of
parts in a mathematical manner to determine whether or not the entire
production run is acceptable, a specified number of defective parts being
permissible.
QUARTER -- The upper part of a vessel's sides near the
stern.
QUICK-BREAK SWITCH -- A switch having a spring or other device
to produce a quick break, independently of the operator.
QUICK-REVOLUTION ENGINES -- A term formerly applied to
high-speed steam-engines direct-coupled to generators.
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