What is feedback system for automatic control of physical quantities? Explain
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What is feedback system for automatic control of physical quantities? Explain?
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- 4) If the deflecting torque of an instrument is directly proportional to the current to be measured and the maximum current produces a deflection of 90°, compare the deflections in a spring controlled instrument with a similar instrument having gravity control for a current equal to half the maximum value also comment upon the two types of control methods. [Ans. 45°, 30°]1.a. In a DC servo motor system, the tachometer feeds back a voltage that’s proportional to motor speed.Where does this voltage go to?A. The interpolator cardB. The CPU in the main controllerC. The driverD. The axis logic card1.b. A type of feedback device that uses a rotor and senses the position of the motor by means of sine andcosine waveforms is called a/anA. tachometer.B. encoder.C. resolver.D. alternator.Q2)A )Define the following 2)Actuating Signal 3)Control Element 4)Negative feedback control System 5)Numerical Control