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Fgrefg 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the bit rate of a digital communication system is R k bit/sec if the modulation used is 32- QAM and the minimum bandwidth required for ISI free transmission?

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Nilesh 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What do you mean by MOSFET?

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Ganesh 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the difference between FET and MOSFET?

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Jagadeesh 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the channel length modulation effect if the MOSFET operating in the saturation region?

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Mohen 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What do you mean by sampling theorem?

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Swapna 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A source Vs(t) = V cos 100 pie(t) has an internal impedance of (4 + j3)ohm. If a purely resistive load connected to this source has to extract the maximum power out of the source. Then what is the value of omega?

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Poonam 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

The return loss of a device is found to be 20dB. What is the value of voltage standing ratio (VSWR) and magnitude of reflection coefficient?

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Ritu 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the output of Fourier transform if g(t) = e(power t), and h(t) is a filter matched to g(t). If g(t) is applied as input to h(t)?

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Sushmita 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the probability of P(3V > 2U), if U and V be two independent zero mean Gaussian random variables of variances 1/4 and 1/9 respectively?

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Pinaki 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Two magnetically uncoupled inductive coils have Q factors q1 and q2 at the chosen operating frequency. Their respective resistance are R1 and R2. Then what is the value of effective Q factor at the same operating frequency when connected in series?

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Franziska 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the value of the step response at t = 2 when the impulse response time system is given by h(t) = a(t - 1) + b(t - 3)?

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Mallikarjun 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the standard equation of Laplace transform?

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Sagar 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Consider two identically distributed zero mean random variables U and V. Let the cumulative distribution functions of U and 2V be F(x) and G(x) respectively. Then what is the required equation for all value of x?

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Poonam 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A system described by a linear, constant coefficient, ordinary, first order differential equation has an exact solution given by y(t) for t > 0, when the forcing function is x(t) and the initial condition is y(0). If one wishes to modify the system so that the solution becomes -2y(t) for t > 0, when the forcing function is x(t) and the initial condition...  more»
A system described by a linear, constant coefficient, ordinary, first order differential equation has an exact solution given by y(t) for t > 0, when the forcing function is x(t) and the initial condition is y(0). If one wishes to modify the system so that the solution becomes -2y(t) for t > 0, when the forcing function is x(t) and the initial condition is y(0).If one wishes to modify the system so that the solution becomes -2y(t) for t > 0, then what we need to do? «less

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Nandini 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Find the sum of n terms of the series 10 + 84 + 734 +.......?

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Saju 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the opposite sign of the set of values of p for which the roots of the equation 3(square of x) + 2(x) + p(p - 1) = 0?

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Pradeep 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A continuous time sinusoid of frequency 33 Hz is multiplied with a periodic Dirac impulse train of frequency 46 Hz. The resulting signal is passed through an ideal analog low pass filter with a cutoff frequency of 23 Hz. The fundamental frequency (in Hz) of the output is________?

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Taj 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the property of MOSFET?

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Jhansi 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the difference between MOSFET and FET?

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Baiju 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

The amplitude of a sinusoidal y a single to obtain the amplitude modulated signal s(t) = 5 cost + 20 cos 1800t + 5 cos 200t. The value of the modulation index is_______?

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Franziska 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What are the methods to avoid noise in the signal?

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Yatheesh 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Define Nyquist plot?

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Pinaki 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

An antenna pointing in a certain direction has a noise temperature of 50 K. The ambient temperature is 290 K. The antenna is connected to a pre amplifier that has a noise figure of 2 dB and an available gain of 40 dB over an effective bandwidth of 12 MHz. What is the effective input noise temperature (Te) for the amplifier and the noise power P (ao)...  more»
An antenna pointing in a certain direction has a noise temperature of 50 K. The ambient temperature is 290 K. The antenna is connected to a pre amplifier that has a noise figure of 2 dB and an available gain of 40 dB over an effective bandwidth of 12 MHz. What is the effective input noise temperature (Te) for the amplifier and the noise power P (ao) at the output of the pre - amplifier? «less

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Yamini 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Humpty and Dumpty sits on a wall every day while having lunch. The wall sometimes breaks. A person sitting on the wall falls if the wall breaks. Which one of the statements below is logically valid and can be inferred from the above sentences?

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Raje 19/11/2016 in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the polar plot of the transfer function: G(s) = 10 (s +1) / s + 10 for 0 < x < infinite?

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