High lights

Synchronous Machines. Synchronous machines are analyzed in 3 papers in this issue. In the first, synchronous-machine theory has been extended to include the effect of armature-circuit capacitance in the general equations for the performance of a salientpole machine (pages 41–8). The second paper presents an extension of the 2-reaction theory of synchronous machines (pages 27–31), The third paper presents a mathematical analysis of the synchronous machine from the point of view of field-distribution theory, a departure from the usual method of considering machine performance by means of circuit theory (pages 49–58).