GATE ECE 2010 PYQ

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown below is

Consider the common emitter amplifier shown below with the following circuit parameters: , , , , , , , , and . The lower cut-off frequency due to is

The transfer characteristic for the precision rectifier circuit shown below is (assume ideal OP-AMP and practical diodes)

In the silicon BJT circuit shown below, assume that the emitter area of transistor is half that of transistor . The value of current is approximately

The amplifier circuit shown below uses a silicon transistor. The capacitors and can be assumed to be short at signal frequency and effect of output resistance can be ignored. If is disconnected from t

Consider an angle modulated signal V. The average power of x(t) is

Consider a baseband binary PAM receiver shown below. The additive channel noise n(t) is with power spectral density . The lowpass filter is ideal with unity gain and cut-off frequency 1 MHz. Let repre

Suppose that the modulating signal is and the carrier signal is , which one of the following is a conventional AM signal without over-modulation

The Nyquist sampling rate for the sign is given by

Consider the pulse shape s(t) as shown. The impulse response h(t) of the filter matched to this pulse is

X(t) is a stationary process with the power spectral density , for all f. The process is passed through a system shown below Let be the power spectral density of Y(t). Which one of the following state

The transfer function Y(s)/R(s) of the system shown is

A unity negative feedback closed loop system has a plant with the transfer function and a controller in the feed forward path. For a unit set input, the transfer function of the controller that gives

For the asymptotic Bode magnitude plot shown below, the system transfer function can be

A system with transfer function has an output for the input signal . Then, the system parameter p is

The signal flow graph of a system is shown below: The state variable representation of the system can be

The signal flow graph of a system is shown below: The transfer function of the system is

The Boolean function realized by the logic circuit shown is

Assuming that the flip-flop are in reset condition initially, the count sequence observed at , in the circuit shown is

Match the logic gates in Column A with their equivalents in Column B

For the output F to be 1 in the logic circuit shown, the input combination should be

In the circuit shown, all the transmission line sections are lossless. The Voltage Standing Wave Ration(VSWR) on the 60 line is

A transmission line has a characteristic impedance of 50 and a resistance of 0.1 /m . If the line is distortion less, the attenuation constant(in Np/m) is

If the scattering matrix [S] of a two port network is then the network is

A plane wave having the electric field components and traveling in free space is incident normally on a lossless medium with and which occupies the region . The reflected magnetic field component is g

The electric field component of a time harmonic plane EM wave traveling in a nonmagnetic lossless dielectric medium has an amplitude of 1 V/m. If the relative permittivity of the medium is 4, the magn

At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is

The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300 K electronic charge= C, thermal voltage = 26 mV and electron mobili

Thin gate oxide in a CMOS process in preferably grown using

Compared to a p-n junction with , which one of the following statements is TRUE for a p-n junction with ?

In a uniformly doped BJT, assume that and are the emitter, base and collector doping in atoms/ , respectively. If the emitter injection efficiency of the BJT is close unity, which one of the following

For the 8085 assembly language program given below, the content of the accumulator after the execution of the program is

In the circuit shown, the device connected Y5 can have address in the range

The current I in the circuit shown is

In the circuit shown, the switch S is open for a long time and is closed at . The current for is

In the circuit shown, the power supplied by the voltage source is

For the two-port network shown below, the short-circuit admittance parameter matrix is

For parallel RLC circuit, which one of the following statements is NOT correct?

Two discrete time system with impulse response and are connected in cascade. The overall impulse response of the cascaded system is

The trigonometric Fourier series for the waveform shown below contains

The transfer function of a discrete time LTI system is given by Consider the following statements: S1: The system is stable and causal for ROC: |z| 1/2 S2: The system is stable but not causal for ROC:

Given If , then the value of K is

A continuous time LTI system is described by Assuming zero initial conditions, the response y(t) of the above system for the input is given by

For a N -point FET algorithm , which one of the following statements is TRUE ?

Consider the z-transform . The inverse z-transform is