Explanation: For the circuit given, the phase angle changes from 0 to 180o as frequency is varied from 0 to ∞. If the positions of R and C are interchanged, the phase shift and band width input and output becomes positive. That is the output (VO) leads input (Vin). 14. Choose the incorrect statement “In wide band-reject filter” .
A. Low cut-off frequency of low pass filter must be larger than the high cut-off frequency of the high pass filter.
B. Low cut-off frequency of high pass filter must be equal than the high cut-off frequency of the high pass filter.
C. Low cut-off frequency of high pass filter must be smaller than the high cut-off frequency of the low pass filter.
D. None of the mentioned
Answer:A
Explanation: For the circuit given, the phase angle changes from 0 to 180o as frequency is varied from 0 to ∞. If the positions of R and C are interchanged, the phase shift and band width input and output becomes positive. That is the output (VO) leads input (Vin). 14. Choose the incorrect statement “In wide band-reject filter” .
A. Low cut-off frequency of low pass filter must be larger than the high cut-off frequency of the high pass filter. B. Low cut-off frequency of high pass filter must be equal than the high cut-off frequency of the high pass filter. C. Low cut-off frequency of high pass filter must be smaller than the high cut-off frequency of the low pass filter. D. None of the mentioned
Explanation: In wide band-reject filter, low cut-off frequency of high pass filter must be larger than the high cut-off frequency of the low pass filter.