Which A/M 32A-60 control panel has the switches and controls necessary to operate the direct current (DC) generator?

The correct choice is the DC instrument control panel, as this panel is specifically designed to provide the necessary switches and controls for operating the direct current (DC) generator. It contains the relevant instruments for monitoring and controlling the functioning of the DC generator, ensuring optimal performance and safety during operation.

The focus of the DC instrument panel is to manage the characteristics unique to direct current systems, such as voltage regulation, load control, and generator start-up procedures. This specialization enables the users to efficiently monitor and respond to the operational needs of the DC generator.

Other panels, such as the AC instrument, generator control, and external AC panel, serve different purposes related either to alternating current (AC) systems or overall generator management, but do not specifically handle DC generator functions. Thus, they lack the necessary controls tailored for direct current operations.