MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The polynomial s4+Ks3+s2+s+1=0 the range of K for stability is _____________ |
| A. | K>5 |
| B. | -10<K |
| C. | K>-4 |
| D. | K-1>0 |
| Answer» E. | |
| 2. |
Consider a characteristic equation, s4+3s3+5s2+6s+k+10=0. The condition for stability is |
| A. | K>5 |
| B. | -10<K |
| C. | K>-4 |
| D. | -10<K<-4 |
| Answer» E. | |
| 3. |
5.Determine the value of K such that roots of characteristic equation given below lies to the left of the line s = -1. s3+10s2+18s+K. |
| A. | K>16 and K<9 |
| B. | K<16 |
| C. | 9<K<16 |
| D. | K<9 |
| Answer» D. K<9 | |
| 4. |
Determine the condition for the stability of unity feedback control system whose open loop transfer function is given byG(s) = 2e-st/s(s+2) |
| A. | T >1 |
| B. | T <0 |
| C. | T <1 |
| D. | T >0 |
| Answer» D. T >0 | |
| 5. |
Determine the stability of closed loop control system whose characteristic equation iss5+s4+2s3+2s2+11s+10=0. |
| A. | Stable |
| B. | Marginally stable |
| C. | Unstable |
| D. | None of the mentioned |
| Answer» C. Unstable | |
| 6. |
The open loop transfer functions with unity feedback are given below for different systems.Among these systems the unstable system is |
| A. | G(s) =2/s+2 |
| B. | G(s) =2/s(s+2) |
| C. | G(s) =2/(s+2)s<sup>^</sup>2 |
| D. | G(s) =2(s+1)/s(s+2) |
| Answer» D. G(s) =2(s+1)/s(s+2) | |
| 7. |
A system with unity feedback having open loop transfer function as G(s) = K(s+1)/s3+as2+2s+1. What values of K and a should be chosen so that the system oscillates ? |
| A. | K =2, a =1 |
| B. | K =2, a =0.75 |
| C. | K =4, a =1 |
| D. | K =4, a =0.75 |
| Answer» C. K =4, a =1 | |