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ISRO EC 2019: Microwave Engineering Booster Quiz 4
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Question 1
In a pulsed radar, the peak radar transmitter power is increased by a factor of 81 keeping all other radar parameters unchanged. The maximum range capability of the radar increases by a factor of
Question 2
Which one of the following has the combined characteristics of dielectric, ohmic and radiation losses?
Question 3
A microwave antenna-characteristics are described as, low weight, low power- handing capacity and low bandwidth. What shall this be?
Question 4
Which of the following modes can exist in a rectangular wave guide?
Question 5
The waveguide (a = 1.5 cm, b = 1 cm) us loaded with dielectric (). Which one of the following is correct?
The 8 GHz signal will
The 8 GHz signal will
Question 6
Match List-I (Modes) with List-II (Characteristic) and select the correct answer using the code given below the lists:
List-I
A). Evanescent mode
B). Dominant mode
C). TM10 and TM01
List-II
1). Rectangular waveguide does not support
2). No wave propagation
3). Lowest cut-off frequency
List-I
A). Evanescent mode
B). Dominant mode
C). TM10 and TM01
List-II
1). Rectangular waveguide does not support
2). No wave propagation
3). Lowest cut-off frequency
Question 7
A micro-strip line with alumina substrate εr = 9 has a trip width w = 3 mm. Substrate thickness h = 0.5mm. What is the pproximate characteristic impedance of the line, assuming TEM wave propagation and negligible fringing field?
Question 8
Maxwell’s equations are obeyed by the E.M. waves when these waves are travelling
Question 9
The main disadvantage of using coaxial cable for microwave signals is its.
Question 10
TEM wave cannot propagate in which one of the following?
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Jan 2ESE & GATE EC