MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 40 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. |
Major distributaries discharge varies from ____________ |
| A. | 0.25 to 5 cumecs |
| B. | 2 to 4 cumecs |
| C. | 1.5 to 5 cumecs |
| D. | 1.2 to 5 cumecs |
| Answer» B. 2 to 4 cumecs | |
| 2. |
The upstream slope recommended for sand and gravel with RCC core wall is __________ |
| A. | 1:2 |
| B. | 3:1 |
| C. | 2.5:1 |
| D. | 1.5:1 |
| Answer» D. 1.5:1 | |
| 3. |
____________ creates concentrated seepage in dams section. |
| A. | Longitudinal cracks |
| B. | Transverse cracks |
| C. | Construction cracks |
| D. | Contraction cracks |
| Answer» C. Construction cracks | |
| 4. |
If the minimum stress developed is negative, then the nature of stress is ___________ |
| A. | Shearing |
| B. | Tensile |
| C. | Bending |
| D. | Compressive |
| Answer» C. Bending | |
| 5. |
_____________ sections allow the surplus discharge to flow in dams. |
| A. | Mulching |
| B. | Over reinforced |
| C. | Breaching |
| D. | Balanced |
| Answer» D. Balanced | |
| 6. |
The height of the dam = free board + ___________ |
| A. | FTL |
| B. | MWL |
| C. | FRL |
| D. | HFL |
| Answer» E. | |
| 7. |
Molitor’s formula can be used for calculation of ___________ |
| A. | Freeboard |
| B. | Toe width |
| C. | Wave height |
| D. | Base drop |
| Answer» D. Base drop | |
| 8. |
The side slopes depend on ____________ conditions of a proposed dam. |
| A. | Toe width |
| B. | Height of foundation |
| C. | Character of material |
| D. | Free board allowance |
| Answer» D. Free board allowance | |
| 9. |
Calculate the minimum stress developed at the heel of the dam, if the self weight of the dam is 924 kN and the base with is 6 metres [Take e = 0.0945m]. |
| A. | 145 kN/m2 |
| B. | 139 kN/m2 |
| C. | 167 kN/m2 |
| D. | 183 kN/m2 |
| Answer» C. 167 kN/m2 | |
| 10. |
To ensure economy in dam sections, the ______ should be minimum. |
| A. | Base width |
| B. | Top width |
| C. | Spillway length |
| D. | Toe of the wall |
| Answer» B. Top width | |
| 11. |
Assertion (A): A linear, negative feedback control system is invariable stable if its open loop configuration is stableReason (R): the negative feedback reduces the overall gain of the feedback. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true and R is not correct Explanation of A |
| C. | A is True and R is false |
| D. | A is False and R is true |
| Answer» E. | |
| 12. |
The characteristic equation of a control system is given by s6+2s5+8s4+12s3+20s2+16s+16=0 . The number of the roots of the equation which lie on the imaginary axis of s-plane: |
| A. | 0 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 13. |
The given characteristic equation s4+s3+2s2+2s+3=0 has: |
| A. | Zero root in the s-plane |
| B. | One root in the RHS of s-plane |
| C. | Two root in the RHS of s-plane |
| D. | Three root in the RHS of s-plane |
| Answer» D. Three root in the RHS of s-plane | |
| 14. |
Consider the following statements:Routh-Hurwitz criterion gives:1. Absolute stability2. The number of roots lying on the right half of the s-plane3. The gain margin and the phase margin |
| A. | 1,2 and3 |
| B. | 1 and 2 |
| C. | 2 and 3 |
| D. | 1 and 3 |
| Answer» C. 2 and 3 | |
| 15. |
The following characteristic equation results in stable operation of the feedback system s3+4s2+10s+11=0 |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
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. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true and R is not correct Explanation of A |
| C. | A is True and R is false |
| D. | A is False and R is true |
| Answer» B. Both A and R are true and R is not correct Explanation of A | |
| 17. |
First column elements of the Routh’s tabulation are 3, 5, -3/4, ½, 2. It means that there are: |
| A. | Is one root in the left half of s-plane |
| B. | Are two roots in the left half of s-plane |
| C. | Are two roots in the right half of the s-plane |
| D. | Is one root in the right half of s-plane |
| Answer» D. Is one root in the right half of s-plane | |
| 18. |
______SECTIONS_ALLOW_THE_SURPLUS_DISCHARGE_TO_FLOW_IN_DAMS.?$ |
| A. | Mulching |
| B. | Over reinforced |
| C. | Breaching |
| D. | Balanced |
| Answer» D. Balanced | |
| 19. |
THE_CHARACTERISTIC_EQUATION_OF_A_CONTROL_SYSTEM_IS_GIVEN_BY_S6+2S5+8S4+12S3+20S2+16S+16=0_._THE_NUMBER_OF_THE_ROOTS_OF_THE_EQUATION_WHICH_LIE_ON_THE_IMAGINARY_AXIS_OF_S-PLANE:?$ |
| A. | 0 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 20. |
____ creates concentrated seepage in dams section.$ |
| A. | Longitudinal cracks |
| B. | Transverse cracks |
| C. | Construction cracks |
| D. | Contraction cracks |
| Answer» C. Construction cracks | |
| 21. |
If_the_minimum_stress_developed_is_negative,_then_the_nature_of_stress_is____$ |
| A. | Shearing |
| B. | Tensile |
| C. | Bending |
| D. | Compressive |
| Answer» C. Bending | |
| 22. |
Assertion_(A):_A_linear,_negative_feedback_control_system_is_invariable_stable_if_its_open_loop_configuration_is_stable$ |
| A. | : the negative feedback reduces the overall gain of the feedback. |
| B. | Both A and R are true and R is correct explanation of A |
| C. | Both A and R are true and R is not correct Explanation of A |
| D. | A is True and R is false |
| Answer» E. | |
| 23. |
The structures constructed along are distributaries are called as _______ |
| A. | Inlets |
| B. | Outlets |
| C. | Distributaries |
| D. | Channels |
| Answer» C. Distributaries | |
| 24. |
Field channels are also known as ______ |
| A. | Branch canals |
| B. | Slope channels |
| C. | Water courses |
| D. | Contour canals |
| Answer» D. Contour canals | |
| 25. |
Major distributaries discharge varies from ____ |
| A. | 0.25 to 5 cumecs |
| B. | 2 to 4 cumecs |
| C. | 1.5 to 5 cumecs |
| D. | 1.2 to 5 cumecs |
| Answer» B. 2 to 4 cumecs | |
| 26. |
The upstream slope recommended for sand and gravel with RCC core wall is __ |
| A. | 1:2 |
| B. | 3:1 |
| C. | 2.5:1 |
| D. | 1.5:1 |
| Answer» D. 1.5:1 | |
| 27. |
The height of the dam = free board + __? |
| A. | FTL |
| B. | MWL |
| C. | FRL |
| D. | HFL |
| Answer» E. | |
| 28. |
Which of the following techniques is utilized to determine at the actual point at which the root locus crosses the imaginary axis? |
| A. | Nyquist technique |
| B. | Routh-Hurwitz technique |
| C. | Nichol’s technique |
| D. | Bode technique |
| Answer» C. Nichol‚Äö√Ñ√∂‚àö√ë‚àö¬•s technique | |
| 29. |
Molitor’s formula can be used for calculation of ___$ |
| A. | Freeboard |
| B. | Toe width |
| C. | Wave height |
| D. | Base drop |
| Answer» D. Base drop | |
| 30. |
The given characteristic equation s4+s3+2s2+2s+3=0 has: |
| A. | Zero root in the s-plane |
| B. | One root in the RHS of s-plane |
| C. | Two root in the RHS of s-plane |
| D. | Three root in the RHS of s-plane |
| Answer» D. Three root in the RHS of s-plane | |
| 31. |
The side slopes depend on ____ conditions of a proposed dam. |
| A. | Toe width |
| B. | Height of foundation |
| C. | Character of material |
| D. | Free board allowance |
| Answer» D. Free board allowance | |
| 32. |
Calculate the minimum stress developed at the heel of the dam, if the self weight of the dam is 924 kN and the base with is 6 metres [ Take e = 0.0945m]. |
| A. | 145 kN/m<sup>2</sup> |
| B. | 139 kN/m<sup>2</sup> |
| C. | 167 kN/m<sup>2</sup> |
| D. | 183 kN/m<sup>2</sup> |
| Answer» C. 167 kN/m<sup>2</sup> | |
| 33. |
The following characteristic equation results in stable operation of the feedback system s3+4s2+10s+11=0 |
| A. | True |
| B. | False |
| Answer» B. False | |
| 34. |
Determine the eccentricity of the dam section, if the base width of the dam be 6m. Take Z = 5.5m. |
| A. | 2.5 |
| B. | 1.5 |
| C. | 3.5 |
| D. | 4.5 |
| Answer» B. 1.5 | |
| 35. |
The Routh-Hurwitz criterion cannot be applied when the characteristic equation of the system contains any coefficients which is : |
| A. | Negative real and exponential function |
| B. | Negative real, both exponential and sinusoidal function of s |
| C. | Both exponential and sinusoidal function of s |
| D. | Complex, both exponential and sinusoidal function of s |
| Answer» C. Both exponential and sinusoidal function of s | |
| 36. |
If the maximum stress is positive, then the nature of stress is ____ |
| A. | Tensile |
| B. | Shearing |
| C. | Compressive |
| D. | Bending |
| Answer» D. Bending | |
| 37. |
Consider the following statements: |
| A. | The effect of feedback is to reduce the system error |
| B. | Feedback increases the gain of the system in one frequency range but decreases in the other |
| C. | Feedback can cause a system originally stable to become unstable |
| D. | Both a and c |
| Answer» E. | |
| 38. |
Calculate the maximum stress at the base section is the self weight is 4400 kN. The top and bottom width of them are 3 and 8 m respectively. Take (e) = 2.97. |
| A. | 1658.15 kN/m<sup>2</sup> |
| B. | 1775.12 kN/m<sup>2</sup> |
| C. | 1897.45 kN/m<sup>2</sup> |
| D. | 2336.67 kN/m<sup>2</sup> |
| Answer» C. 1897.45 kN/m<sup>2</sup> | |
| 39. |
Assertion (A): Feedback control system offer more accurate control over open-loop systems. |
| A. | : The feedback path establishes a link for input and output comparison and subsequent error correction. |
| B. | Both A and R are true and R is correct explanation of A |
| C. | Both A and R are true and R is not correct Explanation of A |
| D. | A is True and R is false |
| Answer» B. Both A and R are true and R is correct explanation of A | |
| 40. |
First column elements of the Routh’s tabulation are 3, 5, -3/4, ½, 2. It means that there are: |
| A. | Is one root in the left half of s-plane |
| B. | Are two roots in the left half of s-plane |
| C. | Are two roots in the right half of the s-plane |
| D. | Is one root in the right half of s-plane |
| Answer» D. Is one root in the right half of s-plane | |