the answer to the question is a Embedded ( I just learned this like a month ago so im pretty sure it right :))
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an actuator is a device that uses a form of power to convert a control signal into mechanical motion
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Liquidity Effect. When the Fed pursues a tight monetary policy, it takes money out of the system by selling Treasury securities and raising the reserve requirement at banks. This raises interest rates because the demand for credit is so high that lenders price their loans higher to take advantage of the demand.
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