Final answer:
The EMER/NORM switch is used to toggle between emergency and normal audio settings in an aircraft's cockpit, allowing the pilot to maintain essential communications during emergencies.
Step-by-step explanation:
The EMER/NORM switch on the audio control panels in an aircraft cockpit is used to toggle between emergency and normal audio settings. This is an important feature for pilots, as it allows them to quickly switch to a configuration that prioritizes essential communication channels during emergency situations. This switch is usually found alongside other important cockpit controls, such as the window control, cruise control button, steering wheel (interior steering wheel in the context of an aircraft, typically referred to as the control yoke), radio volume knob, gear shifter, and on the center console. However, it is distinct in its function from these other controls, as it serves a critical communication role.