A rectangular waveguide has width a. Then at the cutoff frequency (with correspo

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Microwave Communication Comments

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

Correct Answer

Microwave Communication problems

Search Results

1. Compared to coaxial lines, the advantages of wave guides are
Options
A. higher power handling capacity
B. lower loss per unit length
C. cheaper and simple mechanical structure
D. all of the above

2. Consider the following statements, SWR of a transmission line is infinite when the load is
1. a short circuit
2. a complex impedance
3. an open circuit
4. a pure reactance
Which of the above statements are correct?
Options
A. 1 and 3 only
B. 1, 2, 3
C. 2, 3, 4
D. 1, 2, 4

3. Dielectric constant and conductivity of rocky soil and flat sandy soil are around
Options
A. 10 and 20 mho/cm respectively
B. 20 and 10 mho/cm respectively
C. 2 and 5 mho/cm respectively
D. 0.5 and 2 mho/cm respectively

5. Assertion (A): An artificial transmission line can be used as a pulse generator.
Reason (R): A pulse function is used very frequently in network analysis.
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

6. Consider the following statements
1. Fading of signals is generally greatest near radio horizon.
2. Fading of signals is generally greatest in shadow zone.
3. Fading is small when a good optical path is present.
Which of the above statements are correct?
Options
A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

Comments

More in Electronics and Communication Engineering: