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Que.
                  1
                A cascade amplifier stage is equalent to
              
              
                A
                < value="ON" name="10_A" ="">
                a comman emittor stage followed by a common  base stage
              
              
                B
                < value="ON" name="10_B" ="">
                a comman base stage followed by a common emittor stage
              
              
                C
                < value="ON" name="10_C" ="">
                a common base stage followed by an emittor follower
              
              
                D
                < value="ON" name="10_D" ="">
                an emittor follower stage followed by a common base stage
              
              
                Que.
                  2
                In order to make Q point independent and varitions B in a transistor amplifier,it 

                  is   necessary to make
              
              
                A
                < value="ON" name="24_A" ="">
                R (b)<<  B R(c)
              
              
                B
                < value="ON" name="24_B" ="">
                (D)R < or =  B R(c)
              
              
                C
                < value="ON" name="24_C" ="">
                (D)R(b) < or =  B R
              
              
                D
                < value="ON" name="24_D" ="">
                R(b) < or =  B R(c)
              
              
                Que.
                  3
                Input resistance of a common base transistor ckt is of the order of
              
              
                A
                < value="ON" name="46_A" ="">
                0The output resistance of a common base transistor ckt is of 

                  the order of
              
              
                B
                < value="ON" name="46_B" ="">
                50-100 ohm
              
              
                C
                < value="ON" name="46_C" ="">
                100-150 ohm
              
              
                D
                < value="ON" name="46_D" ="">
                150-200 ohm
              
              
                Que.
                  4
                The emitter coupled pair of BJTs gives a linear transfer relation between 

the   differential output voltage and input voltage only when the magnitude 

of V(id) is less   alpha times the thermal voltage, where alpha is
              
              
                A
                < value="ON" name="18_A" ="">
                4
              
              
                B
                < value="ON" name="18_B" ="">
                3
              
              
                C
                < value="ON" name="18_C" ="">
                2
              
              
                D
                < value="ON" name="18_D" ="">
                1
              
              
                Que.
                  5
                Maximum efficiency of half wave rectifier is
              
              
                A
                < value="ON" name="27_A" ="">
                33.33%
              
              
                B
                < value="ON" name="27_B" ="">
                40.6%
              
              
                C
                < value="ON" name="27_C" ="">
                50%
              
              
                D
                < value="ON" name="27_D" ="">
                68%
              
              
                Que.
                  6
                If the input ac is 10Vrms the maximum voltage that will appear across 

the diode of a   half wave rectifier with a capacitor input filter will 

                  be
              
              
                A
                < value="ON" name="33_A" ="">
                10v
              
              
                B
                < value="ON" name="33_B" ="">
                14v
              
              
                C
                < value="ON" name="33_C" ="">
                20v
              
              
                D
                < value="ON" name="33_D" ="">
                28v
              
              
                Que.
                  7
                The three stage cascaded amplifier of identical non-interacting FET common 

source stage   has all over an voltage gain of 1000 and overall bandwidth 

of 25*10^6rad/sec given   g(m) =5mA/v the shunt capacitance of each stage 

                  is given by
              
              
                A
                < value="ON" name="38_A" ="">
                20PF
              
              
                B
                < value="ON" name="38_B" ="">
                10PF
              
              
                C
                < value="ON" name="38_C" ="">
                3.2PF
              
              
                D
                < value="ON" name="38_D" ="">
                1.6PF
              
              
                Que.
                  8
                When a +ve gate voltage is applied to MOSFET it is said to operate in
              
              
                A
                < value="ON" name="58_A" ="">
                enhancement mode
              
              
                B
                < value="ON" name="58_B" ="">
                depletion mode
              
              
                C
                < value="ON" name="58_C" ="">
                conduction mode
              
              
                D
                < value="ON" name="58_D" ="">
                none of these
              
              
                Que.
                  9
                the tunned ckt for good stability should have
              
              
                A
                < value="ON" name="67_A" ="">
                low C
              
              
                B
                < value="ON" name="67_B" ="">
                low r
              
              
                C
                < value="ON" name="67_C" ="">
                high Q
              
              
                D
                < value="ON" name="67_D" ="">
                low L
              
              
                Que.
                  10
                by varying which one of the following the RR feedback oscillator are usually 

                  tunned
              
              
                A
                < value="ON" name="68_A" ="">
                load impedance
              
              
                B
                < value="ON" name="68_B" ="">
                bras
              
              
                C
                < value="ON" name="68_C" ="">
                lore
              
              
                D
                < value="ON" name="68_D" ="">
                none of these
              
              
                Que.
                  11
                An operational amplifier has a slow rate of 100V/micre sec. for a freq. 

of 10mhz the maximum value of the sine wave output voltage will be
              
              
                A
                < value="ON" name="78_A" ="">
                100v
              
              
                B
                < value="ON" name="78_B" ="">
                50/(pi)^v
              
              
                C
                < value="ON" name="78_C" ="">
                10v
              
              
                D
                < value="ON" name="78_D" ="">
                5v
              
              
                Que.
                  12
                the number of flipflop required to build a mod-15 counters is
              
              
                A
                < value="ON" name="129_A" ="">
                4
              
              
                B
                < value="ON" name="129_B" ="">
                5
              
              
                C
                < value="ON" name="129_C" ="">
                6
              
              
                D
                < value="ON" name="129_D" ="">
                7
              
              
                Que.
                  13
                The maximum overall efficiency of a transformer coupled class A amplifier 

                  is
              
              
                A
                < value="ON" name="99_A" ="">
                78.5%
              
              
                B
                < value="ON" name="99_B" ="">
                25%
              
              
                C
                < value="ON" name="99_C" ="">
                50%
              
              
                D
                < value="ON" name="99_D" ="">
                85%
              
              
                Que.
                  14
                In an FET as V(GS) is changed from zero to increasing reverse biased the 

                  value of g(m)
              
              
                A
                < value="ON" name="108_A" ="">
                increases
              
              
                B
                < value="ON" name="108_B" ="">
                decreases
              
              
                C
                < value="ON" name="108_C" ="">
                remain constant
              
              
                D
                < value="ON" name="108_D" ="">
                falls suddenly to zero
              
              
                Que.
                  15
                given for an FET g(m)  =95mA/v total capacitance =500pf for a voltage 

                  gain of -30 the      bandwidth will be
              
              
                A
                < value="ON" name="109_A" ="">
                100khz
              
              
                B
                < value="ON" name="109_B" ="">
                630khz
              
              
                C
                < value="ON" name="109_C" ="">
                3mhz
              
              
                D
                < value="ON" name="109_D" ="">
                19mhz
              
              
                Que.
                  16
                for the resonent ckt shows w =10^5,Q=50,R=400 thevalue of C is given by
              
              
                A
                < value="ON" name="116_A" ="">
                250PF
              
              
                B
                < value="ON" name="116_B" ="">
                1000PF
              
              
                C
                < value="ON" name="116_C" ="">
                500PF
              
              
                D
                < value="ON" name="116_D" ="">
                1.25PF
              
              
                Que.
                  17
                In a class A amplifierusing a transistor under ideal condition the maximum 

ac power   delivered is 1 watt the maximum transistor dissipation capability 

                  has to be
              
              
                A
                < value="ON" name="121_A" ="">
                1watt
              
              
                B
                < value="ON" name="121_B" ="">
                2watt
              
              
                C
                < value="ON" name="121_C" ="">
                3watt
              
              
                D
                < value="ON" name="121_D" ="">
                4watt
              
              
                Que.
                  18
                two binary signals A and B are compared the output expression when the 

                  two signals are   equal is given by
              
              
                A
                < value="ON" name="122_A" ="">
                ab' +a'b
              
              
                B
                < value="ON" name="122_B" ="">
                ab + (ab)'
              
              
                C
                < value="ON" name="122_C" ="">
                (ab)'
              
              
                D
                < value="ON" name="122_D" ="">
                ab
              
              
                Que.
                  19
                the most widely used universal gate are
              
              
                A
                < value="ON" name="123_A" ="">
                OR and AND gates
              
              
                B
                < value="ON" name="123_B" ="">
                NOR and NAND gates
              
              
                C
                < value="ON" name="123_C" ="">
                NOR and AND gates
              
              
                D
                < value="ON" name="123_D" ="">
                NAND and OR gates
              
              
                Que.
                  20
                the microprocessor contains ROM  chip contains?
              
              
                A
                < value="ON" name="165_A" ="">
                control function
              
              
                B
                < value="ON" name="165_B" ="">
                airthmatic function
              
              
                C
                < value="ON" name="165_C" ="">
                instructions to execute data
              
              
                D
                < value="ON" name="165_D" ="">
                memory function
              
              
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                Que.
                  21
                Carry-look ahead is type ofadder in which
              
              
                A
                < value="ON" name="171_A" ="">
                inputs to several stages are examined
              
              
                B
                < value="ON" name="171_B" ="">
                carries are produced simultaneously
              
              
                C
                < value="ON" name="171_C" ="">
                carries are produced before hand
              
              
                D
                < value="ON" name="171_D" ="">
                none of these
              
              
                Que.
                  22
                Logic shift affects
              
              
                A
                < value="ON" name="172_A" ="">
                odd positions
              
              
                B
                < value="ON" name="172_B" ="">
                all positions
              
              
                C
                < value="ON" name="172_C" ="">
                even positions
              
              
                D
                < value="ON" name="172_D" ="">
                new positions
              
              
                Que.
                  23
                Programmable logic array uses
              
              
                A
                < value="ON" name="174_A" ="">
                ROM matrices
              
              
                B
                < value="ON" name="174_B" ="">
                PROM matrices
              
              
                C
                < value="ON" name="174_C" ="">
                RAM matrices
              
              
                D
                < value="ON" name="174_D" ="">
                solo memory
              
              
                Que.
                  24
                Race condition can be avoided by introducing......... between the flipflop
              
              
                A
                < value="ON" name="180_A" ="">
                harmonic suppressor
              
              
                B
                < value="ON" name="180_B" ="">
                deacceleration
              
              
                C
                < value="ON" name="180_C" ="">
                delay
              
              
                D
                < value="ON" name="180_D" ="">
                dusting
              
              
                Que.
                  25
                An amplifier has an open loop gain of 100, an input impadence of 1kohm,and 

an output       impedance of 100ohm.a feedback network with a feedback 

fector of 0.99 is connected to       the amplifier in a voltage series 

fedback mode the new input and output impedance      respectively are
              
              
                A
                < value="ON" name="224_A" ="">
                10 ohm and 1 ohm
              
              
                B
                < value="ON" name="224_B" ="">
                10 ohm and 10 kohm
              
              
                C
                < value="ON" name="224_C" ="">
                100 ohm and 1 ohm
              
              
                D
                < value="ON" name="224_D" ="">
                100 kohm and 1 kohm
              
              
                Que.
                  26
                In a twin wire transmisssion line in the air the adjacent voltage maximum 

                  are at 12.5cm   and 27.5cm the operating freq. is
              
              
                A
                < value="ON" name="229_A" ="">
                300mhz
              
              
                B
                < value="ON" name="229_B" ="">
                1Ghz
              
              
                C
                < value="ON" name="229_C" ="">
                2Ghz
              
              
                D
                < value="ON" name="229_D" ="">
                6.28Ghz
              
              
                Que.
                  27
                The band width of an N stage tunedamplifire with each stage having a 

                   band width of   B, is given by
              
              
                A
                < value="ON" name="238_A" ="">
                B/n
              
              
                B
                < value="ON" name="238_B" ="">
                B/(sqrt)n
              
              
                C
                < value="ON" name="238_C" ="">
                B[(sqrt)2^[1/n]-1
              
              
                D
                < value="ON" name="238_D" ="">
                B/[(sqrt)(/2^[1/n]-1]
              
              
                Que.
                  28
                the resolution of a 12-bit D/A convertor using a binary ladder with 10v 

                  as the full   scale output will be
              
              
                A
                < value="ON" name="135_A" ="">
                2.44mA
              
              
                B
                < value="ON" name="135_B" ="">
                3.50mA
              
              
                C
                < value="ON" name="135_C" ="">
                4.32mA
              
              
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