Which of these is wrong for an all-pass filter?

Question

TuteeHUB · Accepted Answer

It can be made using a single op-amp

TuteeHUB · Answer

It is used for phase equalization in a communication system

TuteeHUB · Answer

It is used in landline communication

TuteeHUB · Answer

Its phase shift is -2tan-1RC, between 0 to -180

TuteeHUB · Answer

It can be made using a single op-amp

1.	Which of these is wrong for an all-pass filter?
A.	It is used for phase equalization in a communication system
B.	It is used in landline communication
C.	Its phase shift is -2tan<sup>-1</sup>RC, between 0 to -180
D.	It can be made using a single op-amp
Answer» D. It can be made using a single op-amp

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