1) If the system is represented by characteristic equation s6 + s4 + s3 + s2 + s + 3 = 0, then the system is_________
a. Stable
b. Unstable
c. Marginally stable
d. Unpredictable
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Answer
Explanation
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ANSWER: Unstable
Explanation:
No explanation is available for this question!
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2) Consider the equation S3 + 3s2 + 5s + 2 = 0. How many roots are located in left half of s-plane?
a. Zero
b. Two
c. Three
d. Four
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Answer
Explanation
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ANSWER: Three
Explanation:
No explanation is available for this question!
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3) In a second order system, if the damping ratio is greater than equal to '1', then what would be the nature of roots?
a. Imaginary
b. Real and equal
c. Real but not equal
d. Complex conjugate
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Answer
Explanation
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ANSWER: Real but not equal
Explanation:
No explanation is available for this question!
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4) In Routh array, if zero is found in the first column, then by which term it needs to be replaced?
a. δ
b. η
c. σ
d. ε
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Answer
Explanation
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ANSWER: ε
Explanation:
No explanation is available for this question!
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5) In accordance to relative stability, the settling time exhibits inversely proportional nature to ________parts of roots
a. Real positive
b. Real negative
c. Imaginary positive
d. Imaginary negative
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Answer
Explanation
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ANSWER: Real negative
Explanation:
No explanation is available for this question!
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6) Consider that the pole is located at origin and its laplace representation is 1/s. What would be the nature of pole response?
a. Rising exponential
b. Decaying exponential
c. Sinusoidal
d. Constant value
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Answer
Explanation
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ANSWER: Constant value
Explanation:
No explanation is available for this question!
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7) If a pole is located at s = -5 in left-hand plane (LHP), how will it be represented in Laplace domain?
a. 1/ s + 5
b. 1/ s - 5
c. s/ s + 5
d. s/ s - 5
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Answer
Explanation
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ANSWER: 1/ s + 5
Explanation:
No explanation is available for this question!
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8) Which among the following are solely responsible in determining the speed of response of control system?
a. Poles
b. Zeros
c. Speed of input
d. All of the above
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Answer
Explanation
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ANSWER: Poles
Explanation:
No explanation is available for this question!
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9) If the complex conjugate poles are located at RHP, what would be the nature of corresponding impulse response?
a. Exponential
b. Damping oscillations
c. Increasing amplifier
d. Constant amplitude oscillations
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Answer
Explanation
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ANSWER: Increasing amplifier
Explanation:
No explanation is available for this question!
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10) On the basis of an output response, into how many parts can the s-plane be divided?
a. 2
b. 3
c. 4
d. 6
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Answer
Explanation
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ANSWER: 3
Explanation:
No explanation is available for this question!
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