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What is the signal to noise ratio (SNR) of a second harmonic wave if the input signal amplitude is 20dB and the output signal amplitude is 25dB?

Correct Answer: 0.8
To calculate the SNR (signal to noise ratio) we take the ratio of the input signal amplitude to the output signal amplitude. SNR = input wave / output wave = 20dB / 25dB = 0.8

What is the total harmonic distortion if the amplitude of first harmonic distortion is 20dB, second harmonic distortion 25dB and external noise is 10dB?

What is the total harmonic distortion if the amplitude of first harmonic distortion is 20dB and second harmonic distortion 25dB?

In a receiver the input signal is 100 V, while the internal noise at the input is 10 V. With amplification the output signal is 2 V, while the output noise is 0.4 V. The noise figure of receiver is

Calculate the harmonic distortion component for an output signal having a fundamental amplitude of 3 V and a second harmonic amplitude of 0.25 V.

A communication channel with AWGN operating at a signal to noise ratio SNR >> 1 and bandwidth 6 has capacity C1. If the SNR is doubled keeping B constant, the resulting capacity C2 is given by

__________ is the ratio of input signal to noise ratio to the output signal to noise ratio of the device.

__________ is defined as the ratio of input signal to noise ratio to the output signal to noise ratio.

Consider a system whose input r and output y are related by the equation $$y\left( t \right) = \int\limits_{ - \infty }^\infty {x\left( {t - \tau } \right)} h\left( {2\tau } \right)d\tau $$
Signal Processing mcq question image
Where h(t) is shown in the graph
Which of the following four properties are possessed by the system? BIBO: Bounded input gives a bounded output
Causal: The system is causal.
LP : The system is low pass.
LTI: The system is linear and time-invariant.

We know ID =1/2 kn (VGS + vgs – Vt)2. Let the signal vgs be a sine wave with amplitude Vgs, and substitute vgs = Vgs sin ω t in Eq.(5.43). Using the trigonometric identity show that the ratio of the signal at frequency 2ω to that at frequency ω , expressed as a percentage (known as the second-harmonic distortion) is

Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1mW, wavelength of 0.85μm.