SONARSound Navigation and Ranging.
STAR CONNECTEDShaped like the letter Y.
SUBMICRONLess than one millionth of a meter.
SYNCHROA small motor-like analog device that
operates like a variable transformer and is used
primarily for the rapid and accurate transmission
of data among equipments and stations.
TEMPERATURE GRADIENTThe rate of tem-
perature change between the primary inlet
temperature and the secondary outlet tem-
TEMPERATURE COEFFICIENTThe amount of
change of resistance in a material per unit of
change in temperature.
TRUE BEARINGAngle between a target and true
north measured clockwise in the horizontal
TRUE NORTHGeographic North.
VENTURI-TYPEHaving a throat-like passage that
increases the velocity and lowers the pressure of
a fluid conveyed through it.
WATERBOXA part of the heat exchanger, also
called the bonnet. Installed at the end of the
heat exchanger to access the tubes for cleaning.
WATTInternational unit of power, equal to one
joule per second.
WYE CONNECTEDA three-phase connection in
which each winding is connected to a command
ground forming a connection that resembles the
ZINC ANODEDisks, rods, bars, or plates made of
zinc metal and installed in the heat exchangers