a)
b)

a)

b)

B4E0572

With block diagram, explain the working of a Foster Seeley discriminator. (10)

With supporting equations and block diagram, explain how the FM can be obtained (10)
using PM.

OR
Explain FM modulator circuit using JFET reactance modulator, taking particular (10)
case of ൧ as capacitive reactance and ൧ as pure resistance.
Explain with circuit diagrams and response, the pre-emphasis and de-emphasis in (10)
FM. Also write the need for pre-emphasis and de-emphasis in FM.

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