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The Wien bridge oscillator is useful -
If you are checking a 50 Hz full-wave bridge rectifier and observe that output has a 50 Hz ripple, then -
The disadvantage of base-bias is that -
The gain of an amplifier is expressed in dB because -
RC coupling is generally confined to low power applications because of -
Two lamps of 100W and 220W rated for 220V are placed in series and a 440V applied across them. Then
In a circuit containing an inductance of zero resistance, the current leads the applied a.c. voltage by a phase angle of-
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