Q181
Open questionThe 'h' parameter equivalent circuit of a junction transistor is valid for
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ECE · all questionsAnalog Electronics
Analog Electronics
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Q182
Open questionFor feedback amplifier with gain feedback reduces the internally generated noise by a factor
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Q183
Open questionA BJT has Ce = 1 pF. If gm is 50 mA/V, calculate the fT of a common-emitter amplifier.
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Q184
Open questionThe current of a certain Si-diode, when measured with a large reverse bias is found to be 10nA. What would be the current be if a forward bias of 2 V is applied? Assume that T = 300° K, η = 2.
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Q185
Open questionWhat is the output voltage across the 900 ohm load in the circuit given below?
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Q186
Open questionThe effect of dc saturation in a rectifier transformer is
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Q187
Open questionThe figure shown is a circuit of which one of the following?
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Q188
Open questionFind output voltage Vo in the circuit below:
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Q189
Open questionIn the circuit shown, it is required that V0 = Vi the values of , m, n are respectively. (x represents don't care condition)
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Q190
Open questionIn the circuit shown below, for the MOS transistors, µn Cox = 100 µA/V2 and the
threshold voltage VT = 1 V. The voltage Vx at the source of the upper transistor is
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Q191
Open questionWhat is the Q-point for a fixed-bias transistor with IB = 75 µA; βDC = 100, VCC = 20 V, RC = 1.5 kΩ
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Q192
Open questionInside a 741 op-amp the last functional block is a
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Q193
Open questionFor a three-input inverting summing amplifier, what is the relation between Rf and R?
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Q194
Open questionIn the circuit shown in the given figure, V0 is given by
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Q195
Open questionConsider the following statements:
To draw a.c. equivalent circuit of a transistor, all
1. d.c. sources are shorted
2. a.c. sources are shorted
3. d.c. sources are opened
4. a.c. sources are connected to d.c. sources
Which of the above statements is/are correct?
To draw a.c. equivalent circuit of a transistor, all
1. d.c. sources are shorted
2. a.c. sources are shorted
3. d.c. sources are opened
4. a.c. sources are connected to d.c. sources
Which of the above statements is/are correct?
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Q196
Open questionIn ideal op-amp the current through the virtual ground is
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Q197
Open questionIn the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2.
The value of current I0 is approximately
The value of current I0 is approximately
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Q198
Open questionA circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier?
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Q199
Open questionIf the base current of a BJT is 250 µA and emitter is 15 mA, then the common base current gain will be
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Q200
Open questionIf the circuit shown has to function as a clamping circuit, then which one of the following conditions should be satisfied for the sinusoidal signal of period T?
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