Number of bits transmitted per sample for delta modulator is A. 1 B. 5 C. 4

Problem 1 The Figure below shows a screen shot of a signal recoded by an oscilloscope. a) What are the average and fundamental frequency for the given signal? b) If the signal is sampled with a sampling frequency of 10 Hz, sketch the sampled signal on the same chart. c) Find the average value of the sampled signal. d) Use zero-order hold to convert the sampled signal to a continuous one and sketch your result on the same chart 2. 0.5 0.4 Time (s) 0.1 0.2 0.3 0.6 0.7 0.8 0.9

The minimum bandwidth for a 32PSK modulated signal with a baud rate of 3000baud is a. 3000 Hz b. 12 kHz c. 600 Hz d. 15 kHz

If the frequency that is injected into an AM modulator is 100Mhz and it is combined with another injected signal of 10Khz, we can say that the combination is:

1

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Given the device chara cteristics Vec, RB , and Rc for the Axed- bias con figurahion of Figure 4Cb). of Figure 4 Ca), determine ICCMA) quee Vec @-point -Isa = 4QA A Rs RC VCE IBQ 20V Ca) C6)

The modulation index of AN signal is reduced from 0.8 to 0.5. The ratio of the total power in the new modulated signal to that of the original signal will nearly be (1) 0.39 (2) 0.63 (3) 0.85 (4) 1.25

An AM signal with a 40 V modulating signal and a carrier voltage of 50 V. What is the peak voltage of the upper side frequency?

The FET has; a.all of the above b.a unipolar structure c.a P-channel type d.an N-channel type