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  • Question
  • Consider a unity feedback control system with open-loop transfer function Consider a unity feedback control system with open-loop transfer function The steady state error of The steady state error of the system due to a unity step input is :


  • Options
  • A. zero
  • B. K
  • C. 1/K
  • D. infinite

  • Correct Answer
  • zero 

    Explanation
    Consider a unity feedback control system with open-loop transfer function The steady state error of .

    Exam Questions Papers problems


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    • 1. Radiation resistance of an antenna is 54 ? and loss resistance is 6 ?. If antenna has power gain of 10, then directivity is:

    • Options
    • A. 9
    • B. 11.11
    • C. data not sufficient
    • D. 10
    • Discuss
    • 2. A noiseless 3 KHz channel can transmit binary at the rate __________ .

    • Options
    • A. 12000 bps
    • B. 10000 bps
    • C. 6000 bps
    • D. 3000 bps
    • Discuss
    • 3. A rectangular waveguide, in dominant TE mode, has dimensions 10 cm x 15 cm. The cut off frequency is

    • Options
    • A. 10 GHz
    • B. 1 GHz
    • C. 15 GHz
    • D. 25 GHz
    • Discuss
    • 4. The analog signal given below is sampled at 1200 samples per second. m(t) = 2 sin 120 pt + 3 sin 240 pt + 4 sin 360 pt + 5 sin 480 pt + 6 sin 600 pt + 7 sin 720 pt. The folding (maximum) frequency is __________ .

    • Options
    • A. 300 Hz
    • B. 360 Hz
    • C. 600 Hz
    • D. 480 Hz
    • Discuss
    • 5. In a semiconductor material. The hole concentration is found to be 2 x 2.5 x 1015 cm-3. If mobility of carriers is 0.13 m2/ v-s. Then find the current density if electric field intensity is 3.62 x 10-19

    • Options
    • A. 7.6237 x 10-4 A/cm2
    • B. 7.6237 x 10-5 A/cm2
    • C. 7.6237 x 10-3 A/cm2
    • D. none of these
    • Discuss
    • 6. When phase-lag compensation is used in a system, then gain cross over frequency, bandwidth and undamped frequency are respectively

    • Options
    • A. Increased, Increased, Increased
    • B. Increased, Increased, Decreased
    • C. Increased, Decreased, Decreased
    • D. Decreased, Decreased, Decreased
    • Discuss
    • 7. What is the propagation constant for air filled wave guide with dimensions a = 1.59" and b = 0.795" at 4.95 GHz?

    • Options
    • A. 0.6698
    • B. 0.7698
    • C. 0.503
    • D. 0.6598
    • Discuss
    • 8. The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is

    • Options
    • A. C + (A ? B)
    • B. (A + B + C)(A + B + C)
    • C. (A + B + C)(A + B + C)(A + B + C)
    • D. (A + B + C)(A + B + C)(A + B + C)
    • Discuss
    • 9. An air-filled rectangular waveguide has dimensions 8cm x 10cm . The phase velocity of guided wave at frequency of 3 GHz for TE10 mode is

    • Options
    • A. 1.5 x 108 m/s
    • B. 5.5 x 108 m/s
    • C. 3.46 x 108 m/s
    • D. 0.18 x 107 m/s
    • Discuss
    • 10. If x[n] then the sequence x[n] is

    • Options
    • A. non-periodic
    • B. periodic
    • C. depends on n
    • D. none of these
    • Discuss


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