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Home Electronics and Communication Engineering Satellite Communication See What Others Are Saying!
  • Question
  • The useful operational life of INSAT-IB (launched in 1983) is expected to end by


  • Options
  • A. 1992-93
  • B. 1991-92
  • C. 1989-90
  • D. 1993-94

  • Correct Answer
  • 1989-90 


  • More questions

    • 1. The power dissipation in a transistor is the product of

    • Options
    • A. emitter current and emitter to base voltage
    • B. emitter current and collector to emitter voltage
    • C. collector current and collector to emitter voltage
    • D. none of the above
    • Discuss
    • 2. Match the following:

      List I (F.T and F.S) List II (Properties)
      A. Fourier Series 1. Discrete, Periodic
      B. Fourier Transform 2. Continuous, Periodic
      C. Discrete Time Fourier 3. Discrete aperiodic
      D. Discrete Fourier Transform 4. Continuous, aperiodic


    • Options
    • A. A-3, B-4, C-2, D-1
    • B. A-1, B-2, C-4, D-3
    • C. A-3, B-2, C-4, D-1
    • D. A-1, B-4, C-2, D-3
    • Discuss
    • 3. Consider the following statements

      1. An iron cored choke is non linear and passive device.
      2. A carbon resistor kept in sunlight is a time invariant and passive device.
      3. A dry cell is a time varying and active device.
      4. An air capacitor is time invariant and passive device.
      Of these statements

    • Options
    • A. 1, 2, 3 and 4 are correct
    • B. 1, 2, 3 are correct
    • C. 1, 2, 4 are correct
    • D. 2 and 4 are correct
    • Discuss
    • 4. Mc Murray full bridge inverter uses

    • Options
    • A. 4 thyristors and 2 diodes
    • B. 4 thyristors and 4 diodes
    • C. 8 thyristors and 4 diodes
    • D. 8 thyristors and 8 diodes
    • Discuss
    • 5. Loss of charge method is suitable for medium resistances.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. If is the Laplace transform of f(t) then f(0+) is

    • Options
    • A. 0
    • B.
    • C. 27
    • D. ?
    • Discuss
    • 7. Match the following:

      List I List II
      A. Ampere's Law 1.
      B. Faraday's Law 2.
      C. Gauss's Law 3.
      D. Free Space 4.


    • Options
    • A. A-1, B-4, C-2, D-3
    • B. A-2, B-4, C-3, D-1
    • C. A-3, B-1, C-2, D-4
    • D. A-4, B-3, C-2, D-1
    • Discuss
    • 8. Assertion (A): Light triggering is very suitable for HVDC transmission.

      Reason (R): Light triggering has the advantage of complete electrical isolation of gate circuit.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R correct but R is not correct explanation of A
    • C. A is correct but R is wrong
    • D. A is wrong but R is correct
    • Discuss
    • 9. Most electromagnetic transmission in rectangular wave-guide uses

    • Options
    • A. TE10 mode
    • B. TE01 mode
    • C. TE20 mode
    • D. TE11 mode
    • Discuss
    • 10. The amount of photoelectric emission current depends on

    • Options
    • A. frequency of incident radiation
    • B. intensity of incident radiation
    • C. both frequency and intensity of incident radiation
    • D. none of the above
    • Discuss


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