ISRO EC 2018:Microwave Engineering Booster Quiz 2

Assertion (A): Microwave link repeaters are typically about 50 km apart.
Reason (R): Curvature effect of Earth makes a limitation for distance between tow microwaves repeaters.

In microwave system, waveguides have the advantages of

What is the voltage attenuation provided by a 25-cm length of waveguide having a= 1cm and b=0.5cm in which a 1 GHz signal is propagated in the dominant mode?

Assertion (A): Microstrip lines are preferred for antenna application.
Reason (R): They have higher ‘Q’ and higher Gain’.

In an air-filled waveguide of dimensions a cm × b cm, at a given frequency, the longitudinal component of electric field of TM₃₂ mode is of the form.

Which form would E_Z have for the lowest order TM mode?

In a waveguide with perfectly conducting flat wall, the angle of reflection is equal to the angle of

Match List-I (Medium Type) with List-II (Frequency Range) and select the correct answer using the code given below the lists:
List-I
A). Open wire
B). Twisted pair
C). Coaxial-cable
D). Waveguide
List-II
1). 100 kHz
2). 100 kHz
3). 100 GHz
4). 5.0 kHz