EE 3120 test #1

# EE 3120 test #1 - Name EE 3120 Test 1 SSN Summer 2000 1...

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Name:_____________________________________     EE 3120           Test #  1 SSN:_______________________________________ Summer  2000 1. Express the signal in  Graph 1  in terms of step and ramp functions. 2. Sketch the signal.  y(t) = -r(-t-2) q(t+4)  + q(t+2) – q(t-2) – r(t-2) q(-t+4). Label you graph. 3. Sketch the following function and determine when the function has reached  zero. (Less than 1% of its maximum value)     y(t) = 5e -.05t cos4t for t>0 4. Consider the following function:   y(t) = 1/(t-4)  (Hint: A sketch might help.)  Is this signal bounded for all t? Why or why not?

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What constant, M bounds |y(t)| in the time interval [6,∞)? What constant, M bounds |y(t)| in the time interval [-10,0]? 5. Plot e -j3t  for t=1. 6. Plot e -j( π /4)k  for k = 0,1,2,3,4,5,6,7 7. The sinusoids in  Graph 7  are sampled as shown.  Determine if the discrete-
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EE 3120 test #1 - Name EE 3120 Test 1 SSN Summer 2000 1...

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