Download Aptitude Crack
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Radio Receivers - Engineering

Q1:

In a ratio detector

A the linearity is worse than in a phase discriminato

B the output is twice that obtainable from a similar phase discriminator

C stabilization against signal strength variations is provided

D the circuit is the same as in a discriminator, except that the diodes are reversed

ANS:A - the linearity is worse than in a phase discriminato

It provides better amplitude limiting. It's different from phase discriminator by change in output path, high capacitor and reversing diode.