What is Swinburne Test of DC Machine?Swinburne Test DefinitionThe Swinburne test is an indirect method for testing DC machines, named after Sir James Swinburne. It’s a simple and common test for shunt and compound wound DC machines with constant flux. This test pre-determines the machine’s efficiency at any load by running it as either a motor or generator and measuring no load losses separately.The circuit setup for Swinburne’s test uses a shunt regulator to adjust the machine’s speed to the ra