A cassette tape storage device has been designed for mass-storage. It is necessary to control accurately the velocity of the tape. The speed control of the tape drive is represented by the system shown in Figure 4.
(a) Determine the limiting value of K for a stable system
(b) Assuming K to be 1000, sketch the Bode diagram of the system.
(c) Determine and indicate on the graph, the phase and gain margins, if they exist.
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