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## GATE ECE 1987

Exam Held on Thu Jan 01 1970 00:00:00 GMT+0000 (Coordinated Universal Time)
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## GATE ECE

(a) Specify the type of the negative feedback in the JFET amplifier shown in Fi...
In case of class A amplifiers, the ratio (efficiency of transformer coupled ampl...
In Fig. if the CMRR of the operational amplifier is 60dB, then the magnitude of ...
A rectangular pulse existing between t = 0 and t = T and having an amplitude A i...
Companding in PCM systems leads to improved signal - to - quantization noise rat...
White Gaussian noise is passed through a linear narrow band filter. The probabi...
The variance of a random variable X is $$\sigma _x^2\,.$$ Then the variance of -...
<p>In the signal flow graph shown in fig X<sub>2</sub>= TX<sub>1</sub> where T i...
For the system shown in figure the transfer function $$\frac{\mathrm C\left(\mat... The popular plot of G(s)=$${{10} \over {s{{\left( {s + 1} \right)}^2}}},$$inter... A system has fourteen poles and two zeroes. Its high frequency asymptote, in its... The magnitude plot of the open loop transfer function G(s), of a certain system ... A system with derivative control is shown in figure. <img class="question-image"... The subtraction of a binary number Y from another binary number X, done by addin... Fill in the blanks of the statements below concerning the following Logic Famili... Given that for a logic family, <p>$${V_{OH}}$$is the minimum output high-leve... The circuit diagram of a 2 bit A to D converter is shown in figure below. The co... A 2-input up/down synchrconous counter using two toggle flip-flops is shown in F... A ripple counter using negative edge-triggered D-flip flops is shown in Fig.1. T... Choose the correct statements relating to the circuit of figure <img class="que... For an electromagnetic wave incident from one medium to a second medium, total r... A transmission line of pure resistive characteristic impedance is terminated wit... An electrostatic field is said to be conservative when Two long parallel wires in free space are separated by a distance R and carry cu... An electric field is given by$$\overrightarrow E = \overrightarrow a {}_x\,{\r...
The cut-off frequency of a waveguide depends upon
A thin dipole antenna is $$\left( {\lambda /15} \right)$$ long, where $$\lambda ... In an intrinsic semiconductor the free electron concentration depends on The diffusion capacitance of a P-N junction <p>A square waveform as shown in the figure is applied across 1 mH ideal inducto... The impedance function of a parallel$$R$$,$$L$$,$$C circuit has poles loca...
The value of current through the 1F capacitor of figure is. <img class="question...
Laplace transform of the functions t u(t) and u(t) sin(t) are respectively:

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