In the same year the first hydrogen-cooled turbogenerator went into service with gaseous hydrogen as a coolant in the rotor and the stator in 1937 at Dayton, Ohio, by the Dayton Power & Light Co.; because of the thermal conductivity of hydrogen gas, this is the most common type in its field today. COUNT 2
QSN1 In what year did the first hydrogen cooled turbogenerator go into service? ANS1 1937 QSN2 What state is the Dayton Power and light Company located? ANS2 Ohio