6. x(t) = Ax(t) + Bu(t) is called the :

(a) system equation

(b) state equation

(c) state transition equation

(d) none of these

7. The number of canonical forms is :

(a) 2

(b) 3

(c) 4

(d) 5

8. Direct decomposition is applicable to transfer functions in which :

(a) denominator is in factored form

(b) both numerator and denominator are in factored form

(c) both numerator and denominator are not in factored form

(d) all the above

9. The concepts of controllability and observability were introduced by :

(a) Gilbert

(b) Gibson

(c) Kalman

(d) none of these

10. A is called the :

(a) system matrix

(b) input matrix

(c) state matrix

(d) transmission matrix

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