A signal of 1 kHz is to be amplified, but the circuit board and wires pick up and store 60 Hz component from a nearby electric line. If this component is 40 dB higher than the desired signal, what filter stop band attenuation is necessary to ensure the signal remains 20 dB above the interferer level?
A. High pass filter with stop band attenuation of 60 dB at 60 Hz
B. LPF with SBA of 60 dB at 1 kHz
C. HPF with SBA of 60 dB at 1 kHz
D. Low pass filter with stop band attenuation of 60 dB at 60 Hz
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Analog Electronics
The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B
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