Input impedance of a system is 50 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ, for the system to be negative feedback, which of the following can be its input impedance without feedback?#

100 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

50 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

60 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

40 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

Input impedance of a system is 50 ‚Äö√Ñ√∂‚àö√´¬¨�

1.	Input impedance of a system is 50 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ, for the system to be negative feedback, which of the following can be its input impedance without feedback?#
A.	50 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
B.	60 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
C.	40 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
D.	100 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
Answer» D. 100 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ