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← TechnologyWhich outcome occurs when positional feedback from a robotic arm's optical encoder fails during a programmed task?
A)Unplanned robotic arm movement✓
B)Decreased motor torque output
C)Automatic emergency system shutdown
D)Increased joint static friction
💡 Explanation
Loss of encoder feedback disrupts the arm's closed-loop control, because positional data guides servo corrections; therefore, 'unplanned movements' occur, rather than controlled shutdown (which requires functioning safety logic) or changes in motor characteristics.
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