McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering , Electronics and Telecommunication Engineering [ENTC] .
| 51. |
The transfer function of a LTI system is given as 1/(s+1). What is the steady-state value of the unit-impulse response? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | infinite |
| Answer» A. 0 | |
| 52. |
The values of the characteristic equation is given by: |
| A. | eigen values |
| B. | state matrix |
| C. | eigen vector |
| D. | none of the mentioned |
| Answer» A. eigen values | |
| 53. |
The state variable representation is preferred |
| A. | to increase the sensitivity to the plant parameter variations |
| B. | to reduce the sensitivity to the plant parameter variations |
| C. | to make a plant simple and to control the transient response |
| D. | none of the above |
| Answer» C. to make a plant simple and to control the transient response | |
| 54. |
With the knowledge of state space representation the transfer function of the system |
| A. | can be determined partly |
| B. | can be determined completely |
| C. | cannot be determined |
| D. | none of the above |
| Answer» B. can be determined completely | |
| 55. |
Which among the following are the interconnected units of state diagram representation? |
| A. | scalars |
| B. | adders |
| C. | integrators |
| D. | all of the above |
| Answer» D. all of the above | |
| 56. |
Which among the following controls the speed of D.C. motor? |
| A. | galvanometer |
| B. | gauss meter |
| C. | potentiometer |
| D. | tachometer |
| Answer» D. tachometer | |
| 57. |
State model representation is possible using _________ |
| A. | . physical variables |
| B. | . phase variables |
| C. | canonical state variables |
| D. | all of the above |
| Answer» D. all of the above | |
| 58. |
Which among the following constitute the state model of a system in addition to state equations? |
| A. | . input equations |
| B. | . output equations |
| C. | state trajectory |
| D. | state vector |
| Answer» B. . output equations | |
| 59. |
Which among the following plays a crucial role in determining the state of dynamic system? |
| A. | . state variables |
| B. | state vector |
| C. | state space |
| D. | state scalar |
| Answer» A. . state variables | |
| 60. |
What is Eigen value? |
| A. | a vector obtained from the coordinates |
| B. | a matrix determined from the algebraic equations |
| C. | a scalar associated with a given linear transformation |
| D. | it is the inverse of the transform |
| Answer» C. a scalar associated with a given linear transformation | |
| 61. |
Let us consider a 3×3 matrix A with Eigen values of λ1, λ2, λ3 and the Eigen values of A-1 are? |
| A. | λ1, λ2, λ3 |
| B. | 1/λ1,1/λ2,1/λ3 |
| C. | -λ1, -λ2, -λ3 |
| D. | λ1, 0, 0 |
| Answer» B. 1/λ1,1/λ2,1/λ3 | |
| 62. |
The Eigen values of a 3×3 matrix are λ1, λ2, λ3 then the Eigen values of a matrix A3 are __________ |
| A. | λ1, λ2, λ3 |
| B. | 1/λ1,1/λ2,1/λ3 |
| C. | λ31,λ32,λ33 |
| D. | 1, 1, 1 |
| Answer» C. λ31,λ32,λ33 | |
| 63. |
State space analysis is applicable even if the initial conditions are _____ |
| A. | zero |
| B. | non-zero |
| C. | equal |
| D. | not equal |
| Answer» B. non-zero | |
| 64. |
According to the property of state transition method, e0 is equal to _____ |
| A. | i |
| B. | a |
| C. | e-at |
| D. | -eat |
| Answer» C. e-at | |
| 65. |
Which mechanism in control engineering implies an ability to measure the state by taking measurements at output? |
| A. | controllability |
| B. | observability |
| C. | differentiability |
| D. | adaptability |
| Answer» B. observability | |
| 66. |
State model representation is possible using _________ |
| A. | physical variables |
| B. | phase variables |
| C. | canonical state variables |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 67. |
Which among the following constitute the state model of a system in addition to state equations? |
| A. | input equations |
| B. | output equations |
| C. | state trajectory |
| D. | state vector |
| Answer» B. output equations | |
| 68. |
Which among the following are the interconnected units of state diagram representation? |
| A. | scalars |
| B. | adders |
| C. | integrator |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 69. |
Which among the following is a unique model of a system? |
| A. | transfer function |
| B. | state variable |
| C. | block diagram |
| D. | signal flow graphs |
| Answer» A. transfer function | |
| 70. |
State model is generally not suitable for measuring: |
| A. | investigation of system properties |
| B. | evaluation of time response |
| C. | real variables |
| D. | both a and b |
| Answer» D. both a and b | |
| 71. |
______________ are the techniques for converting general state models into canonical one. |
| A. | observable |
| B. | controllable |
| C. | diagoanlization |
| D. | cannonical |
| Answer» C. diagoanlization | |
| 72. |
The diagonalizing matrix is also known as: |
| A. | eigen matrix |
| B. | modal matrix |
| C. | constant matrix |
| D. | state matrix |
| Answer» B. modal matrix | |
| 73. |
A system is said to be_____________ if it is possible to transfer the system state from any initial state to any desired state in finite interval of time. |
| A. | controllable |
| B. | observable |
| C. | cannot be determined |
| D. | controllable and observable |
| Answer» A. controllable | |
| 74. |
A system is said to be_________________ if every state can be completely identified by measurements of the outputs at the finite time interval. |
| A. | controllable |
| B. | observable |
| C. | cannot be determined |
| D. | controllable and observable |
| Answer» B. observable | |
| 75. |
Kalman’s test is for : |
| A. | observability |
| B. | controllability |
| C. | optimality |
| D. | observability and controllability |
| Answer» D. observability and controllability | |
| 76. |
Consider a system if represented by state space equation and x1 (t) =x2 (t), then the system is: |
| A. | controllable |
| B. | uncontrollable |
| C. | observable |
| D. | unstable |
| Answer» B. uncontrollable | |
| 77. |
A transfer function of the system does not have pole-zero cancellation? Which of the following statements is true? |
| A. | system is neither controllable nor observable |
| B. | system is completely controllable and observable |
| C. | system is observable but uncontrollable |
| D. | system is controllable and unobservable |
| Answer» B. system is completely controllable and observable | |
| 78. |
The impulse response of a linear LTI system is given as g (t) = e(-t)The transfer function of the system is equal to: |
| A. | 1/s |
| B. | 1/s(s+1) |
| C. | 1/(s+1) |
| D. | s/(s+1) |
| Answer» C. 1/(s+1) | |
| 79. |
An oberser or program that that estimates less than n state variables, where n is dimension of stage vector is called |
| A. | reduced order state observer |
| B. | simply a reduced order observer |
| C. | full observer |
| D. | state observer |
| Answer» A. reduced order state observer | |
| 80. |
Gilbert's test is used to check |
| A. | controllabilty |
| B. | observability |
| C. | observer |
| D. | controlability & observability |
| Answer» D. controlability & observability | |
| 81. |
The necessary and sufficient condition for the system to be completely state controllable is that therank of the composite matrix QC is |
| A. | 1 |
| B. | n |
| C. | 2 |
| D. | 3 |
| Answer» B. n | |
| 82. |
In control system an error detector |
| A. | detects error and signal out an alarm |
| B. | detects error of the system |
| C. | produces an error signal as actual difference of value and desired value of output |
| D. | any of the above |
| Answer» B. detects error of the system | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.