PICTURES 155

Duration: 23 min

Format: 16mm

Description: Principle of the transformer; operation 950. of a manual starting compensator, thermal overload relay, and automatic starting compensator. Animation. Supplemen- 41 tary filmstrip, same title, also available. 32, 41

Complete Record: Film number: OE 390 Type: Motion Picture

Metadata Source:3434 U.S. Government Films