YARD -- Unit of length in the
foot-pound-second system formerly fixed by a line standard, redefined in 1963
as 0,9144 m.
YARROW BOILER -- A Marine water-tube boiler
employing an upper steam drum connected by banks of inclined tubes to two lower
water drums.
YAW -- The rotation of a horizontal axis wind turbine around
its tower or vertical axis.
The Yaw Angle is measured between the relative wind and the
axis of ther vessel.
Y-CONNECTION -- An alternative name for star connection.
YIELD-- The proportion of heavy or light products which can be
derived from a given barrel of crude oil.
Y-VOLTAGE -- The voltage between any line and neutral of a
three-phase or six-phase system. Also called phase voltage or
star voltage.
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