logo

CuriousTab

CuriousTab

Discussion

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

  • As compared to their values in free space


  • Options
  • A. velocity of electric wave in dielectric is smaller but wave length of electric wave is more
  • B. both velocity and wave length of electric wave in dielectric are higher
  • C. both velocity and wave length of electric wave in dielectric are smaller
  • D. wave length of electric wave is less but velocity is more in dielectric

  • Correct Answer
  • both velocity and wave length of electric wave in dielectric are smaller 

    • Microwave Communication problems

    Search Results

    • 1. Assertion (A): Inter-digitated geometry is widely used for microwave transistors.

      Reason (R): Tuning at input and output of transistor uses MOS chip capacitors.


    • 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
    • 2. Assertion (A): Slotted line is frequently used for microwave measurements.

      Reason (R): The unknown impedance is mounted at the end of slotted line.


    • 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
    • 3. Depth of penetration does not depend on frequency.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. In directional coupler of the given figure, the terms |S14| and |S23| of scattering matrix are nearly

    • Options
    • A. 1 each
    • B. 0.5 each
    • C. 0.1 each
    • D. 1 and 0.5 respectively
      • Discuss
    • 5. A line of length slightly less than and short circuited at far end behaves as

    • Options
    • A. inductance L
    • B. capacitance C
    • C. L and C in series
    • D. L and C in parallel
      • Discuss
    • 6. A rectangular waveguide has a discontinuity in the form of reduced narrow dimension. In the equivalent circuit this discontinuity can be represented by

    • Options
    • A. a shunt capacitance at the discontinuity
    • B. a shunt inductance at the discontinuity
    • C. a shunt resistance at the discontinuity
    • D. none of the above
      • Discuss
    • 7. In an optional fiber the refractive index of cladding material should be

    • Options
    • A. nearly 1
    • B. very low
    • C. less than that of core
    • D. more than that of core
      • Discuss
    • 8. What is the numerical aperture an optical fiber when critical angle is 30°?

    • Options
    • A. 0.5
    • B. 0.704
    • C. 0.866
    • D. 0.2
      • Discuss
    • 9. If rv is reflection coefficient and VSWR is voltage standing wave ratio, then

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. A line of characteristic impedance Z0 branches into two line each with characteristic impedance Z0. The refracted voltage is

    • Options
    • A. zero
    • B. infinite
    • C. equal to incident voltage
    • D. two third of incident voltage
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.