Wiley Acing the Gate Electronics and Communication Engineering by Anil Kumar Maini, Varsha Agrawal, Nakul Maini | 9788126582037 | 8126582030 | Holooly

Wiley Acing the Gate Electronics and Communication Engineering

2614 SOLVED PROBLEMS

Question: 17.PE.MCQ.10

A three-stage amplifier with identical stages has an overall lower and upper 3-dB cut-off frequencies of 10 Hz and 10 kHz, respectively. What is the bandwidth of the individual stages assuming that the stages are non-interactive stages? (a) 19605 Hz (b) 9990 Hz (c) 21564 Hz (d) 19500 Hz ...

Verified Answer:

(a) The lower cut-off frequency (f

_{Ln}[/la...

Question: 35.PE.NAQ.5

For one of the values of gain factor (K) for which the control system with characteristic equation s² + K(s + s) -1 = 0 is stable: 0.1, 0.2, 0.3 and 0.8. ...

Verified Answer:

The characteristic equation can be rewritten as s²...

Question: 35.PE.NAQ.4

The characteristic equation of a given system is s³ + (K + 4)s² + 6s + 12 = 0 . The system would be stable for which one of the following four values of K: −4, −3, −2 and −1. ...

Verified Answer:

The Routh table for this system is

\begin{a...

Question: 35.PE.NAQ.3

A control system is characterized by the following differential equation. d²y/dt² + 36y = 36x Determine the damped frequency (in rad/s). ...

Verified Answer:

Comparing the given differential equation with sta...

Question: 35.PE.NAQ.2

In the control system discussed in Question 1, determine the percent overshoot. ...

Verified Answer:

The percentage overshoot is expressed as

\b...

Question: 35.PE.NAQ.1

A control system is described by following differential equation: 3d²y/dt² + 6dy /dt + 12y = 12x Determine the system time constant (in sec). ...

Verified Answer:

The given differential equation can be written as ...

Question: 35.PE.MCQ.10

The open-loop DC gain of a unity negative feedback system with closed-loop transfer function (s + 4)/(s²+ 7s + 13) is (a) 4/13 (b) /4/9 (c) 4 (d) 13 ...

Verified Answer:

(b) The closed loop transfer function is

\f...

Question: 35.PE.MCQ.9

The transfer function of a tachometer is of the form (a) Ks (b) K/s (c) K/s+1 (d) K/s(s + 1) ...

Verified Answer:

(a) Tachometer is basically a differentiator. Its ...

Question: 35.PE.MCQ.8

In the case of a linear constant coefficient second order control system, the system poles will be real and negative for the following condition of damping ratio `ζ ’ (a) ζ > 1 (b) ζ < 0 (c) ζ ≥ 1 (d) ζ = 1 ...

Verified Answer:

(c) The second-order system is considered by a sec...

Question: 35.PE.MCQ.7

The total response of a control system is (a) Same as steady-state response (b) Sum of steady-state response and transient response (c) Sum of free and forced response (d) Both (b) and (c) are correct ...

Verified Answer:

(d) The total response is equal to the sum of free...

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