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1. What type of signal is represented by the code 15A3?
2. Briefly explain the difference between phase and frequency modulation.
3. A 15 mV sinusoid with input frequency 450 Hz is applied to an FM generator with k = 1000 Hz/20 mV. Find the positive frequency deviation.
4. The maximum deviation in broadcast FM is 75 kHz. Suppose that a commercial FM system has modulating frequencies 40 Hz to 20 kHz. What is the permissible range for the modulation index?
5. What is the sensitivity of an FM receiver with a 100 mV quieting voltage and a voltage gain of 50,000?
6. Consider phase locked-loop FM demodulation. What is the meaning of the term hold-in range?
7. Name the 3 possible states of operation for a phase locked-loop.
8. An FM station transmits at 96.5 MHz. Find the local oscillator frequency and image frequency if the receiver has a 10.7 MHz IF.
Find out the voltage that must be applied to the high voltage winding in order to provide rated voltage at the load under full-load conditions at 0.80 lagging power factor.
Using the commonly available resistors, capacitors, and inductors, design a critically damped series RLC circuit (i.e., all three components are connected in series) with an undamped natural frequency of 20 krad/s.
a block and tackle system with nine supporting strands is used to lift a metal lathe in a manufacturing facility.
Design a filter that satisfies the following requirements: 1 input is a current source ranging from 4 mA to 20 mA with a source resistance of 10 ohms. 2 THe filter must output a voltage ranging from 2v to 10 v.
A 1000-W iron is left on the ironing board with its base exposed to the air at 20°C. If the temperature of the base of the iron is 150°C, determine the rate of energy destruction for this process due to heat transfer, in steady operation.
What are some of the possible biases and points of error that may arise in team communication systems and what are the advantages and disadvantages of a transactive memory system (TMS) in a team
design op amp circuit to produce output vout which is related to inputs v1, v2 and v3 by expression vout= -(3v1+5v2+8v3). assume max permitted resistor value= 200k. use only one op amp
A transducer produces a sinusoidal waveform with an amplitude of 2.5 VPK and a DC offset of 0 VDC. The ADC input signal range is 0 V to 5 V. Describe the signal conditioning circuit that is needed to use the full-scale range of the ADC.
In order to control the slope of a ramp produced by an integrator, the values of Vin, R, and C may be varied. Assuming a fixed value for C of 10 μF, would it be better to have a relative large Vin with a correspondingly large value of R
An Ideal Low Pass Filter: The impulse response of an ideal low-pass filter is h(t) = sin(t)/t (or the sinc signal). (a) Given that the impulse response is the response of the system to an input x(t) = f(t)with zero initial conditions
A thin spherical shell of 0.4 kg and a diameter of 0.2 m is filled with alcohol of density 800 kg/m^3. It is released from rest at the bottom of a container of water. Calculate the acceleration of the shell as it rises to the surface.
Compute the power levels of the 2nd, 3rd, and 4th harmonics relative to the fundamental output signal for the Class C amplifier. compute the Fourier coefficients for the harmonics of the clipped sinusoid that results from the partial conduction an..
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