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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 17
1.
A single mode fibre not suffer from which type of dispersion?
Waveguide dispersion
Material dispersion
Intermodal dispersion
Polarization mode dispersion
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Which of the following statements is/are true for a good conductor of electricity?
  1. Its conductivity decreases with increasing temperature.
  2. Number of free electrons is around 1028 m-3.
  3. Its conductivity decreases with addition of impurities.
  4. It is a good conductor of heat also.
1, 2, 3 and 4
1 only
2 and 3 only
3 and 4 only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
How can the bandwidth of a control system be increased?
By the use of phase lead network
By the use of phase lag network
By the use of both phase-lag and phase-lead network
By the use of cascaded amplifiers in the system
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
If an electric network R, L and C are connected in series and supplied by a voltage source then its dual network will be described by the differential equation:
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A signal x1(t) and x2(t) constitute the real and imaginary parts respectively of a complex valued signal x(t). What form of waveform does x(t) possess?
Real symmetric
Complex symmetric
Asymmetric
Conjugate symmetric
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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