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  • Question

  • A rectangular waveguide has width a. Then at the cutoff frequency (with corresponding wave length ?c)


  • Options
  • A. A rectangular waveguide has width a. Then at the cutoff frequency (with corresponding wave length ?c
  • B. a = ?c
  • C. A rectangular waveguide has width a. Then at the cutoff frequency (with corresponding wave length ?c
  • D. a = 2?c

  • Correct Answer
  •  

    • More questions

    • 1. A loss less line is terminated in a circular lines are E lines

    • Options
    • A. SWR = 0
    • B. SWE = 0
    • C. SWR is finite
    • D. SWR = ?
      • Discuss
    • 2. In an infinite line the input impedance at every point is equal to characteristic impedance.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A circular polarizer converts a linearly polarized wave into a circularly polarised wave.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Typical values of for an SCR are in the range of

    • Options
    • A. 1 to 10
    • B. 25 to 500
    • C. 0.1 to 1
    • D. 1000 to 2000
      • Discuss
    • 5. In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 1000 kHz will be

    • Options
    • A. 1010 kHz
    • B. 1455 kHz
    • C. 1910 kHz
    • D. 545 kHz
      • Discuss
    • 6. A meter with a resistance of 100 ? and a full scale deflection of current of 1 mA is to be converted into voltmeter of 0 - 5 V range. The multiplier resistance should be

    • Options
    • A. 490 ?
    • B. 5000 ?
    • C. 4900 ?
    • D. 5100 ?
      • Discuss
    • 7. To multiply a number by 8 in 8085 we have to use RAL instruction

    • Options
    • A. once
    • B. twice
    • C. thrice
    • D. four times
      • Discuss
    • 8. Presently, the worlds's largest and most advanced multi-purpose communication satellite is

    • Options
    • A. INSAT-2
    • B. Intelsat-V
    • C. INSAT-ID
    • D. Olympus-I
      • Discuss
    • 9. Electric dipole moment is expressed in debye unit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Match the following:

      List I List II
      A. Reactance theorem 1. Foster
      B. Driving point impedance 2. Bartlett
      C. Continued fraction expansion 3. Cauer
      D. Bisection Theorem 4. Positive real function


    • Options
    • A. A-1, B-4, C-3, D-2
    • B. A-1, B-2, C-3, D-4
    • C. A-2, B-3, C-1, D-4
    • D. A-3, B-4, C-2, D-1
      • Discuss

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