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Fundamentals of Mixed Signals and Sensors

Showing 76-98 of 98 answers

What density spectrum can be measured in this formula?
  • None of the above
  • Doubling the signal
  • Squaring the signal Correct
  • Adding two signals
What is ADC?
  • Analog-to-Digital Converter Correct
  • African Democratic Congress
  • Attack Damage Carry
What is DAC?
  • Deferred Acquisition Costs
  • Digital-to-Analog Converter Correct
  • Development Assistance Committee
What is the classification of amplifier that uses the common emitter configuration of transistor?
  • Class B Amplifier
  • Class A Amplifier Correct
  • Class C Amplifier
What is the formula for noise power spectral density?
  • Total power / bandwidth Correct
  • Bandwidth / Total power
  • Noise power of signal/Interpolated signal
What is the ROC of z-transform of finite duration anti-causal sequence?
  • z=E2=88=9E Correct
  • z=E2=88=9E
  • Entire z-plane, except at z=0
  • z=0
What is the set of all values of z for which X(z) attains a finite value?
  • 3/(1-2z)-4/(1-3z)
  • None of the above
  • 3/(1-2z-1)-4/(1-3z-1) Correct
  • 3/(1+2z-1)-4/(1+3z-1)
What is the z-transform of the signal x B1nu(-n-1)?
  • True Correct
What is the z-transform of the signal x= -=CE=B1nu(-n-1)?
  • True Correct
  • False
What is the z-transform of the signal x=[3(2n)-4(3n)]u?
  • 3/(1+2z-1)-4/(1+3z-1)
  • None of the above
  • 3/(1-2z)-4/(1-3z)
  • 3/(1-2z-1)-4/(1-3z-1) Correct
What should be the sampling frequency if the highest frequency of the signal is 5Hz?
  • 25Hz
  • 10Hz
  • 5hz Correct
Which is NOT a property of convolution?
  • Shifting property
  • Differentiation of Output
  • Convolution with impulse
  • Integration of Output Correct
Which is NOT a property of the region of convergence?
  • ROC is a disconnection region Correct
  • A two-sided sequence (neither left nor right-sided) has a ROC consisting of a ring in the z-plane, bounded on the interior and exterior by a pole
  • The Fourier transform of x[n] converges absolutely if and only if the ROC of the z-transform includes the unit circle
  • The ROC cannot contain any poles
Which is NOT a quantization noise assumption?
  • Uniform quantization steps are not constant Correct
  • All quantization levels have equal probability
  • Quantization error uncorrelated with input
Which is NOT a static specification?
  • Monotomy
  • Missing codes
  • Offset
  • jitter Correct
Which is NOT a transistor configuration?
  • common emitter
  • common gate Correct
  • common base
  • common collector
Which is not a type of correlation?
  • Auto Correlation
  • Cross Correlation
  • Discrete Correlation Correct
Which is NOT an effect of aliasing?
  • Wagon wheel effect
  • Retinal images Correct
  • Text images
Which of the following is/are an analog input/output ? 
  • video
  • motion
  • switch
  • audio Correct
Which of the following is/are NOT a detectable phenomena? 
  • Sound Correct
  • Chemical
  • Physical Correct
  • Biological
Which of the following justifies the linearity property of z-transform?[x↔X(z)].
  • x+y ↔X(z)Y(z)
  • xy ↔X(z)+Y(z)
  • xy ↔X(z)Y(z)
  • x+y ↔X(z)+Y(z) Correct
Which of the following series has an ROC as mentioned below?
  • αnu Correct
  • α-nu
  • α-nu(-n)
  • αnu
Which of the following variations can be done to make capacitance based sensors ? (Choose one or more)
  • Change the size of the capacitor
  • Change the overlapping area of the parallel electrodes Correct
  • Change distance between the parallel electrodes Correct
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