Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 182
TRANSFORMERS 1.441 C. Auxiliary apparatus A duct, or chamber,of considerable size isrequired under the trans-formers in order to con-duct the cooling air tothem. A blower outfit forsupplying air is required. D. Maintenance An occasional clean-ing, for which a supplyof compressed air atabout 20 lb.…
Electrical engineering
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