Electronics and Communication Engineering - Microwave Communication

11.
Which of the following is a balanced line?
Coaxial line
Strip line
Microstrip line
TV twin lead
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are
zero
equal to incident quantities
half the incident quantities
double the incident quantities
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
A magic tee is to be used as CW duplexer. Then port 1, port 2, port 3 (E arm), port 4 (H arm) respectively should be connected to
matched load, antenna, receiver and CW transmitter
CW transmitter, antenna, receiver and matched load
CW transmitter, receiver, antenna and matched load
CW transmitter, matched load, receiver and antenna
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Wave guides are pressurised above normal atmospheric pressure for
increasing the power handling capacity
improving conductivity of walls
preventing higher modes from propagation
varying the wave impedance
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.

Assertion (A): In a power divider SH = 0, S21 = 0.707 = S3,

Reason (R): In a power divider the input port (i.e., port 1) is matched and incident power is equally divided in output ports 2 and 3

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.