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Which is one of the disadvantages of 2G standards?

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A popular method of increasing the range of an ac instrument is use of A 4-line-to-1-line multiplexer shown in figure-I (the same as per IEEE convention is shown in figure-II) is fed with three logic inputs A, B and C as shown. The output of the multiplexer will be Match List-I with List-II and select the correct answer using the options given below: List-I (SCR Rating) List-II (Protective element) a. di/dt limit 1. Snubber circuit b. dv/dt limit 2. Heat sink c. i 2 t limit 3. Series reactor d. Junction temperature limit 4. Fuse Voltage on R, L, C in series circuit are shown below. Value of voltage sources is Negative feedback amplifier is a . . . . . . . .