logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electronics and Communication Engineering ‣ Microwave Communication Comments
  • Question

  • In which mode of rectangular waveguide are all field components zero?


  • Options
  • A. TM00
  • B. TM11
  • C. TM01
  • D. TM10

  • Correct Answer
  • TM00 

    • Microwave Communication problems

    Search Results

    • 1. As compared to dimensions of most feeds, the skin depth at microwave frequencies is

    • Options
    • A. of the same magnitude
    • B. much larger
    • C. much smaller
    • D. either (b) or (c)
      • Discuss
    • 2. When duct propagation exists

    • Options
    • A. the line of sight and diffraction. Zone concepts are payable
    • B. the line of sight and diffraction zone concepts are not applicable
    • C. line of sight concept is applicable but diffraction zone concept is applicable
    • D. diffraction zone concept is not applicable but line of sight concept is not applicable
      • Discuss
    • 3. Assertion (A): A small section of high impedance line is equivalent to a series inductance.

      Reason (R): A small section of a low impedance line is equivalent to a series resistance.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R are 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
    • 4. The radiation resistance of a doublet antenna of length dl is proportional to

    • Options
    • A. ? l
    • B. (? l)2
    • C. (? l)3
    • D. (? l)05
      • Discuss
    • 5. Which mode has the minimum cutoff frequency in rectangular wave guides?

    • Options
    • A. TE11
    • B. TE10
    • C. TE01
    • D. TE20
      • Discuss
    • 6. A microstrip line has dielectric having relative permittivity ?r. The effective dielectric constant is

    • Options
    • A. more than ?r
    • B. equal to 1
    • C. less than ?r
    • D. either a or b
      • Discuss
    • 7. If in line the characteristic impedance becomes real.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Consider the following statements about radar Beacon

      1. It is also called transponder.
      2. It includes pulse transmitter, receiver and antenna.
      3. It replies with full power even when the signal receives is weak.
      Which of the above statements are correct?

    • Options
    • A. All
    • B. 1 and 2 only
    • C. 2 and 3 only
    • D. 2 only
      • Discuss
    • 9. For l << ?, the equivalent circuit of a microwave resistor is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. The usable bandwidth of ridge wave guide

    • Options
    • A. is lower than that of rectangular waveguide
    • B. is higher than that of rectangular waveguide
    • C. is almost same as that of rectangular waveguide
    • D. is very small as compared to that of rectangular waveguide
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.