Final answer:
When the gear is in transit in heavy machinery such as a backhoe, auditory and visual cues indicate that the hydraulic pump is activated. These can include the sound of the pump motor, movement of the hydraulic fluid, and control panel indicators like pressure gauges and warning lights.
Step-by-step explanation:
In the context of heavy machinery, such as a backhoe, the indication that the gear is in transit and the hydraulic pump is activated can be observed through various signals. Specifically, in hydraulic and mechanical lever systems, there could be visual and auditory cues. For example, the activation of a hydraulic pump may be accompanied by the sound of the pump motor running, as well as the movement of hydraulic fluid in the system, which can sometimes be seen through sight glasses or indicator levels. Furthermore, there might be control panel indicators such as lights or gauges that reflect the operation of the pump and the status of the gear.
Control panel indicators that show the hydraulic pressure levels and the gear engagement could include a pressure gauge showing an increase in hydraulic pressure, signaling that the pump is running, and warning lights or indicators that reflect the transition of gears or the active state of the drive system. It is vital that operators are familiar with their specific machinery to accurately read these cues.
As for the background information mentioning an oil pump and wind, while interesting, it does not directly relate to the hydraulic systems in machinery like a backhoe. The hydraulic pump and its indicators are critical elements to focus on when determining whether the gear is in transit.