Match List-I (transfer functions) with List – Ii (impulse response) and select the correct answer using the codes given below the lists List-I List-II a. 1. b. 2. c. 3. d. 4.

1.   A B C D  2  1  4  3

2.   A B C D  1  2  4  3

3.   A B C D  2  1  3  4

4.   A B C D  1  2  3  4

4
 A B C D 2 1 4 3

Explanation :
No Explanation available for this question

For the networks shown in Figures a and B to be duals, it is necessary that R’, L’ and C’ are respectively equal to

1.  1/R, C and L

2.  1/R, 1/L and 1/C

3.  R, 1/L and C

4.   R, L and C

4

1/R, C and L

Explanation :
No Explanation available for this question

The constant M-circles corresponding to the magnitude (M) of the closed loop transfer function of a linear system of values of M greater than one lie in the G-plane and to the

1.  Right of the M = 1 line

2.   Left of the M = 1 line

3.  Upper side of the M = +j1 line

4.  Lower side of the M = -j1 line

4

Left of the M = 1 line

Explanation :
No Explanation available for this question

The characteristics equation of a closed-loop control system is given as S2+4s+16=0 The response frequency in radian/sec of the system is

1.  2

2.  2√3

3.  4

4.  2√2

4

4

Explanation :
No Explanation available for this question

Match the List-I with List-II and select the correct answer using the codes given below the lists List-I List-II A. Z11 1. R B. Z12 2. R+ L C. Z21 3. R – Ls D. Z22 4. R + Ls

1.  1 2 1 4

2.   2 11 3

3.   111 4

4.   2 1 3 4

4

111 4

Explanation :
No Explanation available for this question

In the network shown in the given figure, if, the voltage v at the time considered is 20 V, then dv/dt at that time will be

1.  1 V/s

2.   2 V/s

3.  -2 V/s

4.   Zero

4

2 V/s

Explanation :
No Explanation available for this question

The impulse response of an R-L circuit is a

1.  Rising exponential function

2.  Decaying exponential function

3.  Step function

4.   Parabolic function

4

Decaying exponential function

Explanation :
No Explanation available for this question

A pulse of unit amplitude and width ‘a’ is applied to a series RL circuit as shown in the figure. The current i(t) tends to infinity will be

1.  Zero

2.   1 A

3.  A value between zero and one depending upon the width of the pulse

4.   Infinite

4

Zero

Explanation :
No Explanation available for this question

The sinusoidal steady-state voltage gain of the network shown in the given figure will have magnitude equal to 0.707 at an angular frequency of

1.  Zero

4

Explanation :
No Explanation available for this question

For loop(1) of the network shown in the given figure, the correct loop equation is

1.  v(t) = Ri1(t) + L1 d/dt[i1(t)-i2(t)] - M12 di2/dt (t)

2.  v(t) = Ri1(t) + L1 d/dt [i1(t)-i2(t)]+ M12 di2/dt (t) – M23 di2/dt(t)

3.   L1 d/dt [i1(t)-i2(t)] + (L2 + L3) di2/dt (t) – 2(M12 + M23) di2/dt (t) – M12 di1/dt (t)

4.  L1 d/dt [i1(t)-i2(t)] + (L2 + L3) di2/dt (t) – M12 di2/dt (t) – 2(M12 + M23) di2/dt (t)

4