76. Provide suitable prepositions: Switzerland is ......... Germany, France, Australia and Italy.?
77. Find resistance RB to bring transistor to threshold of saturation VCB = 0, VBE = 0.7 V, a = 0.96
78. In figure ID = 4 mA. Then VGS =
79. A typical value of gm for a FET is about 25 μs.
80. The dissipation at the collector is in the quiescent state and increases with excitation in the case of a
81. In following circuit, RB will be if VCC = 10 V, VS = 2 V, RC = 5 kΩ, RS = 90 kΩ, β = 50, ICE = 0, VCEsat = 0.1 V
82. The open loop gain of an ideal op-amp is
83. In following figure, what will be R1 and R2 for maximum symmetrical swing if VCSat ≈ 0. Given that RE = 200 Ω, RC = 400 Ω, VCC = 20 V, β = 99
84. The ideal characteristics of a stabilizer is
85. The ripple factor of a half wave rectifier is more than 2.
86. Assertion (A): The circuit in figure produces repetitive narrow pulses when input is fed with sine or triangular waveform having peak value more than + VReason (R): The high gain op-amp produces voltages at two levels. If input is more than + V, the output is + 15 V otherwise the output is - 15 V.
87. In a CE amplifier drives a low load resistance directly the result will be
88. Provide suitable prepositions. My name has been excluded ......... the list .?
89. For high frequencies a capacitor like
90. A non-inverting op-amp summer is shown in figure, the output voltage V0 is
91. In following figure find VGG by assuming gate current is negligible for the p-channel JFET. (if IDQ = - 6 mA, RS = 0, VDD = -18 V, RD = 2 kΩ, IDSS = - 10 mA, IPO = - 3 V)
92. A difference amplifier using op-amp has closed loop gain = 50. If input is 2 V to each of inverting and non-inverting terminals, output is 5 mA. Then CMRR =
93. The coupling capacitor in amplifier circuits
94. In figure if C is replaced by short circuit then RB will be
95. A full wave rectifier circuit using centre tapped transformer and a bridge rectifier are fed at 100 V, 50 Hz. The frequencies of outputs in these two rectifiers are
96. When the ac base voltage in a CE amplifier circuit is too high, the ac emitter current is
97. When load is coupled to class A amplifier through transformer, efficiency decreases.
98. The gain of an FET amplifier can be changed by changing
99. The open loop gain of an actual op-amp is about 100.
100. In the circuit figure LED will be on when v1 is