Q281
Open questionThe op-amp circuit shown in the given figure be used for
Select an option to see the answer and solution.
ECE · all questionsAnalog Electronics
Analog Electronics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
377
Questions
15/19
Page
Pick an option on a question to see the right answer and solution.
Q282
Open questionTransistors ratings symbols using capital letter and with subscripts also in capital letters denotes
Select an option to see the answer and solution.
Q283
Open questionCrest factor for an alternating current source is the ratio of
Select an option to see the answer and solution.
Q284
Open questionEach Transistor in Darlington pair (as shown in Fig.) has hfe = 100. Overall hfe of composite transistor neglecting leakage current is,
Select an option to see the answer and solution.
Q285
Open questionAn amplifier's power level is changed from 8, watts to 16 watts, equivalent dB gain is
Select an option to see the answer and solution.
Q286
Open questionIn common emitter BJT amplifier, the maximum usable supply voltage is limited by
Select an option to see the answer and solution.
Q287
Open questionWhich of the following circuits converts any arbitrary waveform into square waveform?
Select an option to see the answer and solution.
Q288
Open questionIn a hybrid π model, which terminal is NOT accessible?
Select an option to see the answer and solution.
Q289
Open questionCalculate the value of IE for a transistor that has αdc = 0.98 and IB = 100 µA.
Select an option to see the answer and solution.
Q290
Open questionFor an amplifier, which parameter is calculated with VS = 0?
Select an option to see the answer and solution.
Q291
Open questionInput resistance of inverting amplifier as shown in figure with ideal op-amp is:
Select an option to see the answer and solution.
Q292
Open questionIn an op-amp, if the feedback voltage is reduced by connecting a voltage divider at the output, which of the following will happen?
1. Input impedance increases
2. Output impedance reduces
3. Overall gain increases
1. Input impedance increases
2. Output impedance reduces
3. Overall gain increases
Select an option to see the answer and solution.
Q293
Open questionThe reason for using a precision OPAMP based rectifier diode for detecting weak AM signals is that
Select an option to see the answer and solution.
Q294
Open questionNegative feedback amplifier is a . . . . . . . .
Select an option to see the answer and solution.
Q295
Open questionIn the amplifier circuit shown in the figure, the values of R1 and R2 are such that the transistor is operating at VCE = 3 V and IC = 1.5 mA when its β is 150. For a transistor with β of 200, the operating point (VCE, IC) is
Select an option to see the answer and solution.
Q296
Open questionIn the break region of clipping circuit, a diode behaves as
Select an option to see the answer and solution.
Q297
Open questionOne of effect of negative feedback in amplifier is to
Select an option to see the answer and solution.
Q298
Open questionOutput characteristics of a BJT amplifier is given. Find the minimum collector current required for r0 = 50 kΩ. (r0 is output resistance)
Select an option to see the answer and solution.
Q299
Open questionAn N-Channel JFET has IDSS = 8 mA and Vp = -5 V. The minimum value of VDS for pinch-off region and the drain current IDS for a VGS = -2V are.
Select an option to see the answer and solution.
Q300
Open questionFrom measurement of the rise time of the output pulse of an amplifier whose input is a small amplitude square wave, one can estimate the following parameter of the amplifier.
Select an option to see the answer and solution.