A duplexer is used to

A)
couple two antennas to a transmitter
B)
isolate the antenna from the local oscillator
C)
prevent interference between two antennas connected to receiver
D)
use an antenna for reception or transmission without interference

Correct Answer : Option (D) :   use an antenna for reception or transmission without interference

Explanation : Same antenna is used for transmission and reception.

Recently Updated in Microwave Communication Questions
In a microwave resistor the wall thickness is made as small as possible to
A)
minimize capacitive effect
B)
reduce inductance
C)
have low value of R
D)
have high value of R

Correct Answer :   minimize capacitive effect

In a klystron amplifier the transit time of electron passing the gap in the cavity should be
A)
less than half cycle
B)
less than one cycle
C)
less than quarter cycle
D)
more than quarter cycle

Correct Answer :   less than quarter cycle

At a frequency equal to cutoff frequency in a rectangular wave guide
A)
the flow of electromagnetic energy is zero
B)
the flow of electromagnetic energy is infinite
C)
the flow of electromagnetic energy is 10% of maximum
D)
the flow of electromagnetic energy is 50% of maximum

Correct Answer :   the flow of electromagnetic energy is infinite

ECE MCQ's

Power Electronics
Digital Electronics
Analog Electronics
Microprocessors
Radio Receivers
Signals and Systems
Satellite Communication
Communication Systems
Microwave Communication
Automatic Control Systems
Materials and Components
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