GATE EE 1993 | GATE EE Year Wise Previous Years Questions

GATE EE 1993

MCQ (More than One Correct Answer)

-0.3

A Wein bridge oscillator is shown in figure. Which of the following statements are true if $$'f'$$ is the frequency of oscillation? GATE EE 1993 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 2 English

GATE EE 1993 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 2 English

For $$R = 1\,k\Omega ,\,C = {1 \over {2\pi }}\mu F,\,\,f = 1\,kHz$$

$$R = 3\,k\Omega ,\,C = {1 \over {18\pi }}\mu F,\,\,f = 3\,kHz$$

The gain of the op-amp stage should be less than two for proper operation

The gain of the op-amp stage should be three for proper operation

GATE EE 1993

MCQ (Single Correct Answer)

-0.3

The transfer function for the state variable representation $$\mathop X\limits^ \bullet = AX + BU,\,\,Y = CX + DU,$$ is given by

$$D + C{\left( {s{\rm I} - A} \right)^{ - 1}}\,\,B$$

$$B{\left( {s{\rm I} - A} \right)^{ - 1}}\,C + D$$

$$D{\left( {s{\rm I} - A} \right)^{ - 1}}\,B + C$$

$$C{\left( {sl - A} \right)^{ - 1}}\,D + B$$

GATE EE 1993

MCQ (Single Correct Answer)

-0.3

Consider a second order system whose state space representation is of the form $$\mathop X\limits^ \bullet = AX + BU.$$ If $$\,{x_1}\,\,\left( t \right)\, = {x_2}\,\left( t \right),$$ then system is

controllable

uncontrollable

observable

unstable

GATE EE 1993

MCQ (Single Correct Answer)

-0.3

Signal flow graph is used to obtain the

stability of a system

transfer function of a system

controllability of a system

observability of a system

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