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Home ‣ Electronics and Communication Engineering ‣ Microwave Communication See What Others Are Saying!
  • Question

  • Consider the following statements about instrument landing system of aircraft

    1. It ensures correct landing under conditions of low visibility.
    2. It consists of runaway localizer, glide path equipment and marker beacons.
    3. It is basically a blind landing system.
    Which of above statements are correct?


  • Options
  • A. All
  • B. 1 and 2 only
  • C. 1 and 3 only
  • D. 2 only

  • Correct Answer
  • All 

    • More questions

    • 1. If and A + B is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. JCOKE = 3
      JCOKE = JCOKE + 1
      GO TO (5, 8, 9, 11, 15, 16 18, 20) JCOKE.

      After the execution of above statement, the control is transferred to statement number

    • Options
    • A. 8
    • B. 11
    • C. 16
    • D. 20
      • Discuss
    • 3. In high frequency circuits impedance matching can be done by

      1. open circuited stubs
      2. short circuited stubs
      3. transformer
      Which of the above correct?

    • Options
    • A. 1, 2 and 3
    • B. 1 and 2 only
    • C. 1 and 3 only
    • D. 2 and 3 only
      • Discuss
    • 4. When a dc chopper feeds an RLE load, the load current, during steady state operation

    • Options
    • A. remains constant
    • B. varies between maximum and minimum values
    • C. may remain constant or vary
    • D. is constant if R is constant
      • Discuss
    • 5. The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's

    • Options
    • A. intelligence gathering capacity
    • B. domestic communications
    • C. meteorological capability
    • D. both (b) and (c)
      • Discuss
    • 6. Geosynchronous satellites are always launched in the equatorial plane because it is the only plane which provides

    • Options
    • A. 24-hour orbit
    • B. stationary satellite
    • C. global communication
    • D. zero-gravity environs
      • Discuss
    • 7. Consider the signal flow graph shown in figure below. The gain is :

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. In a superheterodyne receiver, the IF is 455 kHz. If it is tuned to 1200 kHz, the image frequency will be

    • Options
    • A. 1655 kHz
    • B. 2110 kHz
    • C. 745 kHz
    • D. 910 kHz
      • Discuss
    • 9. The discussing sharing of a communication satellite by many geographically dispersed Earth station, DAMA means

    • Options
    • A. Demand-Assigned Multiple Access
    • B. Decibel Attenuated Microwave Access
    • C. Digital Analog Master Antenna
    • D. Dynamically-Assigned Multiple Access
      • Discuss
    • 10. A function having frequency f is to be sampled. The sampling time T should be

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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