GATE Electrical Engineering

Which one of the following statements is true about the small signal voltage gain of a MOSFET based single stage amplifier?

For an ideal MOSFET biased in saturation, the magnitude of the small signal current gain for a common drain amplifier is

When a bipolar junction transistor is operating in the saturation mode, which one of the following statements is TRUE about the state of its collector-base (CB) and the base-emitte...

Of the four characteristics given below, which are the major requirements for an instrumentation amplifier? P. $$\,\,\,\,$$High common mode rejection ratio Q. $$\,\,\,\,$$High inpu...

A low pass filter with a cut-off frequency of $$30Hz$$ is cascaded with a high pass filter with a cut off frequency of 20Hz. The resultant system of filters coil function as

The typical frequency response of a two-stage direct coupled voltage amplifier is as shown in figure

A bipolar junction transistor (BJT) is used as a power control switch by biasing it in the cutoff region (OFF state) or in the saturation region (ON state). In the ON state, for th...

A diode whose terminal characteristics are related as $${i_D} = {{\rm I}_S}\,{e^{{V \over {{V_T}}}}},\,$$ where $${{\rm I}_S}$$ is the reverse saturation current and $${V_T}$$ is t...

A sample-and-hold $$(S/H)$$ circuit, having a holding capacitor of $$0.1$$ $$nF,$$ is used at the input of an $$ADC$$ (analog-to-digital converter). The conversion time of the $$AD...

An op-amp has an open-loop gain of $${10^5}$$ and an open-loop upper cutoff frequency of $$10$$ $$Hz.$$ If this op-amp is connected as an amplifier with a closed-loop gain of $$100...

An $$N$$-channel $$JFET$$ having a pinch-off voltage $$\left( {{V_P}} \right)$$ of $$-5V$$ shows a transconductance (gm) of $$1$$ $$mA/V$$ when the applied Gate to source voltage $...

An op-amp, having a slew rate of $$62.8$$ $$V/\mu \,$$sec, is connected in a voltage follower configuration. If the maximum amplitude of the input sinusoidal is $$10$$ Volts. Then...

The type of power amplifier which exhibits crossover distortion in its output is

An active filter consisting of an op-amp, resistor $${R_1},\,\,{R_2},\,\,{R_3}$$ and two capacitors of value $$C$$ each, has a transfer function $$T\left( s \right) = {{{{ - s} \ov...

An analog electronic circuit that measures $$rms$$ value of the input voltage by averaging the square of the instantaneous voltage level, responds slowly to changes in the input si...

A current amplifier has an input resistance of $$10\Omega ,$$ an output resistance of $$10\,\,k\Omega $$ and a Current gain of $$1000.$$ It is feed by a current source having a sou...

The mobility of an electron in a conductor expressed in terms of

As temperature is increased, the voltage across a diode carrying a constant current.

The enhancement type n-channel MOSFET is represented by the symbol

The colour code of a $$1k\Omega $$ resistance is

One of the applications of current mirror is

A major advantage of active filters is that they can be realized without using

The depletion region (or) space charge region (or) transition region in a semiconductor $$p-n$$ junction diode has

The common mode voltage of a unity gain (voltage follower) op-amp buffer in terms of its output voltage $${V_0}$$ is __________.

A practical $$R$$-$$C$$ sinusoidal oscillator is built using a positive feedback amplifier with a closed loop gain slightly less than unity.

The voltage series feedback in a feedback amplifier leads to

In an $$RC$$- coupled common Emitter amplifier which of the following is true?

In a common Emitter amplifier, the un bypassed emitter resistance provides

An ideal op-amp is used to make an inverting amplifier. The two input terminals of the op-amp are at the same potential because