Electronics and Communication Engineering - Electromagnetic Field Theory

16.
End fire array is called a linear resonant dipole array.
True
False
Answer: Option
Explanation:
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17.
Which of the following statements is incorrect regarding Balun transformer?
It changes impedance like current transformer
It changes balanced to unbalanced line
It is used to couple a co-axial line to a parallel line wire
Any of the above
Answer: Option
Explanation:
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18.
The maximum usable frequency for the 'E' layer is 10 MHz.
True
False
Answer: Option
Explanation:
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19.
In free space
phase velocity is greater than light velocity
phase velocity is equal to group velocity
phase velocity is equal to light velocity
Both (b) and (c)
Answer: Option
Explanation:
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20.
Laplacian of a scalar function V is
gradient of V
gradient of the gradient of V
divergence of V
divergence of the gradient of V
Answer: Option
Explanation:
No answer description is available. Let's discuss.