Which consequence results when exceeding gallium arsenide (GaAs) drift velocity?

💡 Explanation

Traveling faster causes an onset of "negative differential resistance" in GaAs, because electrons scatter to higher energy valleys with lower mobility. Therefore, current decreases with higher voltage, rather than remaining constant. This reduces amplifier gain.

• Within a hydraulic actuator driving a robotic arm, which consequence results when the spool valve's sharp edges erode due to fluid impingement?
• Which risk increases when investment casting employs insufficient vacuum degassing?
• Which outcome occurs when exceeding the critical surface speed between a lathe cutting tool and a workpiece?
• Which output characterizes a robot arm’s instability arising from sensor lag?
• Which risk increases when a hydraulic actuator on an aircraft landing gear experiences rapid, repeated cycling?
• Which consequence results when exceeding positional tolerances during jet engine turbine blade casting?