If D, G and Œ∑ denote the directly, power gain and efficiency of an – McqOptions

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1.	If D, G and Œ∑ denote the directly, power gain and efficiency of an antenna, then which of the following relation holds :
A.	DGŒ∑ = 1
B.	Œ∑ = DG
C.	D = Œ∑G
D.	D = G/Œ∑
Answer» E.

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