A. By the usual socket, into which the lamp screws. The socket is a part
of the focusing device, one type of which holds the lamp in a horizontal
position, while in the other the lamp is held vertically or upright.
49. Q. Before turning the steam into the turbine, what precautions
should be observed?
A. The turbo-generator should be lubricated by a small amount of black
or engine oil, placed in the cup on the turbine or steam end. On the
generator end, the oil should be maintained within one-half inch of the
top of the hinge-cover cup; using black oil. The drainage of the steam
end is cared for automatically by a three-eighth inch drain pipe without
a valve. The pipe should be kept open.