Figure 4 A test of a filter using an oscilloscope
-Refer to Figure 4. The block with the ? on it represents a
A)low- pass filter
B)impedance matching circuit
C)detector
D)amplifier

Question

Figure 4 A test of a filter using an oscilloscope
-Refer to Figure 4. The block with the ? on it represents a
A)low- pass filter 
B)impedance matching circuit 
C)detector 
D)amplifier

Quizplus · Accepted Answer

A detector in a circuit diagram is often represented by a block with a question mark, as it is responsible for demodulating or detecting the signal from its modulated form.

Figure 4 a Test of a Filter Using an Oscilloscope