First column elements of the Routh’s tabulation are 3, 5, -3/4, ½, 2. It means that there are:

Is one root in the left half of s-plane

Are two roots in the left half of s-plane

Are two roots in the right half of the s-plane

Is one root in the right half of s-plane

Assertion (A): Feedback control system offer more accurate control over open-loop systems. Reason (R): The feedback path establishes a link for input and output comparison and subsequent error correction.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not correct Explanation of A

Consider the following statements:

The effect of feedback is to reduce the system error

Feedback increases the gain of the system in one frequency range but decreases in the other

Feedback can cause a system originally stable to become unstable

The Routh-Hurwitz criterion cannot be applied when the characteristic equation of the system contains any coefficients which is :

Negative real and exponential function

Negative real, both exponential and sinusoidal function of s

Both exponential and sinusoidal function of s

Complex, both exponential and sinusoidal function of s

The given characteristic equation s 4 +s 3 +2s 2 +2s+3=0 has:

Three root in the RHS of s-plane

Assertion (A): A linear, negative feedback control system is invariable stable if its open loop configuration is stable Reason (R): the negative feedback reduces the overall gain of the feedback.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not correct Explanation of A

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