In the given block diagram of a receiver, Figure, identify the boxes labelled as X and Y and write their functions.

In the given block diagram of a receiver, Figure, identify the boxes l

1.	In the given block diagram of a receiver, Figure, identify the boxes labelled as X and Y and write their functions.
Answer» X `rarr" IF stage "rarr` Intermediate frequency stage to change the carrier frequency to lower frequency. `Yrarr" Amplifier "rarr` It amplifies the signal i.e. it increases the amplitude of the detected signal to compensate the attenuation of the signal. The detected signal may not be strong enaough to use.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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In the given block diagram of a receiver, Figure, identify the boxes labelled as X and Y and write their functions.

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