Q. For input and later stages, BI-FET op-amp use

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Q. The emitter coupled pair of BJT's gives a linear transfer relation between the differential output voltage and the differential input voltage Vid only when the magnitude of Vid is less a times the thermal voltage, where α is

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Q. In most transistor the collector region is made physically larger than the emitter region

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Q. The leakage current in CB configuration may be around

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Q. In a CE amplifier the Q point is very close to saturation point on the dc load line. This results in

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Q. Class-B amplifier has less efficiency compared to

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Q. Calculate the O/P voltage of a non-inverting constant gain multiplier with R1 = 100 kΩ, Rf= 600 kΩ, V1 = 2 volt, then O/P voltage Vo of non inverting op-amp is given by

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Q. Which op-amp circuit uses a resistance in series with input and capacitor in feedback path?

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Q. Saturation of iron core causes distortion.

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Q. Which of the following is non-sinusoidal oscillator?

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Q. Low gain-bandwidth product of a JFET is due to

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Q. In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be

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Q. In a base driver amplifier the voltage gain is the ratio of

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Q. Assertion (A): A class C amplifier is a timed amplifier which needs a tank circuit as the load in the collector circuit of the transistor for its proper operation

Reason (R): In class C operation collector current flows for less than 180° of the ac cycle and thus flows in pulses

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Q. A junction Field Effect Transistor can operate in

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Q. In the case of an amplifier, the normalised voltage gain is given by.where f0 is zero frequency, fP is pole frequency. For a standard frequency response of the amplifier,

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Q. In a rectifier only a portion of input power is converted into DC power. The rest is AC power.

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Q. The slope of the transfer characteristics of an N-channel JFET is

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Q. In a current mirror

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Q. In which of the following circuits is op-amp used in open loop configuration?

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