Page 692 - SUBSEC October 2017_Neat
P. 692

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            22.     Which pair of values gives the open-                      Item 24 refers to the following
                    loop gain of an ideal op. amp. and that              diagram which shows a non-inverting
                    of a typical op. amp?                                amplifier with negative  feedback.

                           Ideal         Typical                               -
                    (A)      0            100
                    (B)      ∞                     100000                      +
                    (C)      100000        ∞                                                   R 2
                    (D)      0            100000                                                          V 0
                                                                       V
                                                                         1                     R
                                                                                                 1

                    Item 23 refers to the following table.


                        X           Y            Z
                         0           0           1               24.     Which of the following represents the
                         0           1           1                       gain of the amplifier?
                         1           0           0
                         1           1           1
                                                                         (A)

            23.     Which of the following combinations
                    gives the truth table shown above?                   (B)

                          X
                    (A)                              Z
                          Y
                                                                         (C)




                                                                         (D)
                          X
                    (B)                              Z
                          Y





                          X
                    (C)                              Z
                          Y





                          X
                    (D)                              Z
                          Y









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