GATE EC question library
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Flat top sampling of low pass signals
The Fourier transform of a function is . The Fourier transform of will be
In a system with uniform quantisation, increasing the number of bits from to will reduce the quantisation noise power by a factor of
The image channel selectivity of superheterodyne receiver depends upon
The of a rectangular pulse of duration is
The amplitude spectrum of a Gaussian pulse is
For small signal . operation, a practical forward biased diode can be modelled as
The -map for a Boolean function is shown in the figure is The number of essential prime implicants for this function is
The current through resistance in the circuit shown in the figure is
The figure is shows a mod- counter, here is equal to
An instruction used to set the carry Flag in a computer can be classified as
For the identity , the dual form is
The advantage of using a dual slope in a digital voltmeter is that
Two 's complement number having sign bits and are added and the sign bit of the result is . Then, the occurrence of overflow is indicated by the Boolean function
An processor control the flow of information between
The threshold voltage for each transistor in the figure is . For this circuit to work as an inverter, must take the values
An equivalent complement representation of the 's complement number is
In the figure is and , the input is now replaced by a sequence . , the outputs and will be
The noise margin of a gate is about
The minimum number of -input gates required to implement the Boolean function , assiming that and are available, is