What is the function of a speaker?
1.
convert digital electrical signals into analog electrical
signals
2.
convert analog electrical signals into digital electrical
signals
3.
convert sound waves into analog electrical signals
4.
convert sound waves into digital electrical signals
5.
convert digital electrical signals into sound waves
6.
convert analog electrical signals into sound waves
Heat transferred due to the mixing of rising hot fluids and
sinking cold fluids (assisted by gravity) is known as...
1.
absorption
2....
(a) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 183?
(b) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 1301?
(c) For a 0 − 10V analog-to-digital 10-bit converter, what is the digital equivalent of an analog 2.355V?
(d) For a ±5V analog-to-digital 12-bit converter, what is the digital equivalent of an analog 4.265V?
1)Explain the need of analog and digital modulation in
communication systems.
2)How modulated signals can be recovered through coherent detection
of carrier. Draw suitable diagram and mathematical expressions.What
is meant by over modulated carriers.
3)Drive an expression for transmission efficiency of A.M wave.
Under what circumstances carrier wave reversal take place.
4)How SSB-SC modulated waves can be produced. Elaborate your answer
with suitable diagram.
5)A device is sending out data at the rate of 1000 bps.
(a) How long does...
Why shift to digital television from analog? What are the
shortcomings of analog TV and what are some of the advantages of
digital? The specifications of digital television are set by the
ATSC. Who are they and how do they specify the transmission? Please
explain fully.
2. A digital signal processing system with analog audio signal
input in the range of 0-20 Khz uses oversampling techniques and a
second order sigma delta modulator to convert the analog signal
into a digital bit stream at a rate of 3.072 Mhz.
i) Explain how the digital bit stream may be converted in to a
digital multibit stream for x(n).
ii) Determine the overall improvement in signal to quantization
noise ratio made possible by oversampling and noise shaping and...
What component of a retinal rod can be considered the
analog of a neural dendrite?Instead of containing receptors for
neural transmitters, how are these components
activated?
choose the correct answer
1-
The spectrum of analog signals is: *
Discrete and repeated every Fs
Continuous and repeated every Fs
Discrete and not repeated
Continuous and not repeated
2-For the following Matlab code, how many tones are going to be
played by (sound) instruction? *
4
5
6
2
1
3
3-
In Assembly language, to print any number between 0 and 9 on
screen using (INT 21h), you need to: *
Subtract 30h from the number and...