1) The Frequency meter in the Microwave Bench setup generates
a)X-band frequency (8-12)GHz
b)Microwave Signal
c)Impedance to the Signal which is
travelling in the bench setup
d)All the above
e)Nothing.
Answer : [e] X-band frequency (8-12)GHz
2) A Rectangular Wave guide having the
dimensions a & b (b>a) , then the Dominant mode of
propagation in TE case is
a) TE10
b) TE11
c) TE01
d) TE00
Answer : [c] TE01
3) In Micro strip line case we are
getting Quasi TEM mode of propagation because
1) It acts as two conductors
2) Small in size
3) Dielectric- air Interface
4) Its planar Structure
a) 1 & 2
b) 4 & 3
c) only 3
d) 1 & 3
e) only 4
Answer : [d]1 & 3
5) If “d” is the thickness of a
dielectric slab waveguide. The dominant mode size (dmode) of the
dielectric waveguide is
a) dmode is less than d
b) dmode is equal to d
c) dmode is greater than d
d) cannot be determined
e) none of the above
Answer : [c] dmode is
greater than d
6) The Dominant mode in a Square wave
guide is
a) TE01
b) TE11
c) TE10
d) TE00
Answer : [a] TE01
7) TE mode have
a) Magnetic field vector in the
direction of propagation
b) Electric field vector in the
direction of propagation
c) Both E & H in the direction of
propagation
d) No E & H in the direction of
propagation
e) None of the above
Answer : [a] Magnetic field vector in
the direction of propagation
8). Microwave Frequencies are harmful
because
a) They have a very small wavelength
b) Water molecules are resonant at
these frequencies
c) Both a and b
d) Only a
e) None of the above
Answer : [b] Water molecules are
resonant at these frequencies
9) In the Strip line case if the
relative dielectric constant value is 9 F/m then the phase velocity
of the wave which is travelling inside the strip line if the strip
width is 0.3nm and height of the dielectric slab 0.5mm.
Answer : 1010 CM/S
10) In the above problem if the strip
line is operating at 10GHz frequency then the propagation constant of
that strip line is.
a)Insufficient data
b)628
c) 6.28
d)4.52
e) 452
f)None
Answer : [b] 628
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