Question Number.       6.         A high pass filter has.            

Option A.        high impedance to high frequency, low impedance to low frequency.         

Option B.        high impedance to both high and low frequency.     

Option C.        high impedance to low frequency, low impedance to high frequency.         

Correct Answer is.      high impedance to low frequency, low impedance to high frequency.         

Explanation.    NIL.

Question Number.       11.       A high pass filter consists of a.                      

Option A.        capacitor in series and inductor in series.       

Option B.        capacitor in series and inductor in parallel.    

Option C.        an inductor in series and a capacitor in parallel.        

Correct Answer is.      capacitor in series and inductor in parallel.    

Explanation.    NIL.

 A capacitor in series and inductor in parallel make what kind of filter?.                  

Option A.        Low pass.       

Option B.        Band pass.      

Option C.        High pass.      

Correct Answer is.      High pass.      

Explanation.    NIL.

Question Number.       8.         A filter with a small bandwidth has.             

Option A.        a high value of Q.      

Option B.        a Q of zero.    

Option C.        a low value of Q.       

Correct Answer is.      a high value of Q.      

Explanation.    Q is the 'quality' of a filter.

Question Number.       10.       Band pass filter in a circuit.               

Option A.        only allows a narrow band of frequency to pass.      

Option B.        allows frequencies below a cut-off frequency to pass.          

Option C.        allows frequencies above a cut-off frequency to pass.          

Correct Answer is.      only allows a narrow band of frequency to pass.      

Explanation.    NIL.

Option A.        allow frequencies above a certain value to pass.        

Option B.        allow frequencies within a range to pass.      

Option C.        allow frequencies below a certain value to pass.       

Correct Answer is.      allow frequencies above a certain value to pass.        

Explanation.    Read up on filters - especially high pass, low pass, band pass and band stop.

Option A.        high pass filter.           

Option B.        band pass filter.          

Option C.        low pass filter.

Correct Answer is.      low pass filter.

Explanation.    This is a very simple low pass filter, since the capacitor will absorb all high frequencies.

Option A.        L type with series L and shunt C.      

Option B.        L type with series C and shunt L.      

Option C.        Π type with series C and L.   

Correct Answer is.      Π type with series C and L.   

Explanation.    NIL.

Option A.        attenuates frequencies either side of a narrow range.

Option B.        stops a narrow range of frequencies. 

Option C.        stops frequencies either side of a narrow range.        

Correct Answer is.      stops a narrow range of frequencies. 

Explanation.    NIL.

Question Number.       7.         A circuit with good selectivity will have.                  

Option A.        a large bandwidth.     

Option B.        a narrow bandwidth.  

Option C.        a low L/C ratio.          

Correct Answer is.      a narrow bandwidth.  

Explanation.    NIL.

Question Number.       9.         Band stop filter.                     

Option A.        attenuates frequencies in a specified narrow band.   

Option B.        stops frequencies in a narrow band.   

Option C.        pass all frequencies in that band.       

Correct Answer is.      attenuates frequencies in a specified narrow band.   

Explanation.    Attenuates means 'to reduce'. No filter will totally stop the unwanted filter band.