Q. A compensating network has Gc(s) = (1+αTs)/(1+Ts) . If it is a phase lag circuit the value of a should be

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Q. If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane. N is the number of clockwise encircle elements of (-1 + jo) point. P is the number of poles of G(s) H(s) in right half s plane. The Nyquist stability criterion can be expressed as

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Q. The number of stator field windings in an ac tachometer are

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Q. The radius of constant N circle for N = 1 is

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Q. In using Nyquist stability criterion it is not necessary to determine closed loop poles.

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Q. The angular location of poles depends on

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Q. For the characteristic equation s⁵ + s⁴ + 2s³ + 2s² + 3s + 15 = 0, the number of roots in left half s plane are

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Q. At corner frequency the phase angle of factor 1/(1 + jωT) is

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Q. Frequency response approach is a simple approach to control system design.

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Q. For a second order system with 0 < ξ < 1, the angle which poles make with negative real axis is

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Q. The resolution of a wire wound potentiometer is about

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Q. Consider the following statements

1. The effect of feedback is to reduce system error
2. Feedback increases the system gain at one frequency but reduces the system gain as another frequency
3. Feedback can cause an originally stable system to become unstable

Which of the above statements are correct?

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Q. M circles are symmetrical with respect to

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Q. A lag compensator

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Q. The response to sinusoidal excitation can be found by

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Q. Assertion (A): Industrial robots improve productivity.

Reason (R): Robots can handle monotonous and complex jobs without error in operation.

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Q. The phase angle curve of G(jω) H(jω) is drawn by adding the phase angles of individual factors.

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Q. Temperature is analogous to

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Q. In control systems the output of sensor usually, is

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Q. Magnetic amplifier is used for

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