ECET 310 DEVRY Course Tutorial/Uoptutorial

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2. ECET 310 DEVRY Tutorial Course ECET 310 Entire Course ECET 310 Week 1 Homework 1 • ECET 310 Week 1 Homework 1_1 •  ECET 310 Week 1 Homework 1_2 •  ECET 310 Week 2 Assignment Homework 2_1 •  ECET 310 Week 2 Assignment Homework 2_3 •  ECET 310 Week 3 Assignment Homework 3_1 •  ECET 310 Week 3 Assignment Homework 3_2 •  ECET 310 Week 5 Assignment Homework 5_1 • ECET 310 Week 1 Homework 1_1 • Computer Science - General Computer Science • 1.  Add: • (a)  60 dB  +  25 dB= • (b)  20 dBW +  5 dBW= • (c)  22 dB  -  4 dB=  • 2.  Convert: • (a)  65 W  into  dB = • (b)  10 dB  into  watts  • (c)  – 5 dB  into watts= .

3. ECET 310 DEVRY Tutorial Course ECET 310 Week 1 Homework 2 ECET 310 Week 2 Assignment Homework 1 • Computer Science - General Computer Science • 1 . Four frequencies are applied at the input of a non-linear amplifier. Write down all of the frequency components at the output of the non-linear device.  Write down only the first three harmonics. • 2. Find out the frequency components at the output of a resonant-tuned circuit tuned at 1200 KHz with a bandwidth of 15 KHz and connected at the output of a non-linear amplifier (mixer). • Computer Science - General Computer Science • 1.  Assume that a receiver has a first amplifier stage with a 5KW input resistance, a gain of 300, an input audio signal of 20 mV, and an operating temperature of 27oC. When the amplifier is operating with a bandwidth first of 10 MHz, find  • (a)  therms input noise levels   • (b)  the audio output levels   • the rms output noise levels

4. ECET 310 DEVRY Tutorial Course ECET 310 Week 2 Assignment Homework 2 ECET 310 Week 3 Assignment Homework 1 • Computer Science - General Computer Science • 1.  The bandwidth of a series resonant circuit is 400 Hz. • (a)  If the resonant frequency is 4000 Hz, find Q. • (b)  If Ω, what is the value of XL at resonance? • Find the inductance L and capacitance C of the circuit.= • Computer Science - General Computer Science • 1. Draw the frequency spectrum at the output of the first balanced modulator. • 2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier • 3. Draw the frequency spectrum at the output of the second balanced modulator.

5. ECET 310 DEVRY Tutorial Course ECET 310 Week 3 Assignment Homework 3 ECET 310 Week 5 Assignment Homework 5 • Computer Science - General Computer Science • 1.  An AM signal has an unmodulated carrier voltage VC  =  10VP, a load resistance of  RL = 10, and a modulation index of  m  =  1. Determine: • Modulation • (a)  PC  = Vc2/2/2(10)= •      PSB  =PT-PC/2=  • (b)  Total power in the AM signal • Computer Science - General Computer Science • 1.  Determine the Nyquist sample rate for a maximum analog input frequency of: • (a)  4 KHz • 10 KHz • 2. Determine the dynamic range for a 10-bit sign-magnitude PCM code. • 3. Determine the minimum number of bits required in a PCM code for a dynamic range of 80 dB. What is the coding efficiency?

6. ECET 310 DEVRY Tutorial Course ECET 310 Week 7 Homework 7 • Computer Science - General Computer Science • 1. For a QPSK system and the given parameters, determine • 2. Which system requires the highest Eb/No ratio for a probability of error of 10-7, four-level QAM or 8-PSK system? • 3. Determine the minimum bandwidth required to achieve a P(e) of 10-4  for a 16-PSK system operating at 25 Mbps with a carrier-to-noise ratio of 10 dB

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