{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

examsoln2 - EECS 216 EXAM#2 Winter 2008 x(t cos(3t)dt= 1...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EECS 216 EXAM #2 Winter 2008 1. Fourier series of x(t) is cos( t )+ 1 2 cos(2 t )+ 1 3 cos(3 t )+ . . . Then integraltext π - π x ( t ) cos(3 t ) dt =: (a) 0 (b) 1 3 (c) π 6 (d) π 3 (e) 2 π 3 2. Impulse response of an LTI system with frequency response 2 ( ) 2 +4( )+4 is: (a) Noncausal (b) 2 e - 2 t cos(2 t ) u ( t ) (c) e - 2 t sin( t ) u ( t ) (d) te - 2 t u ( t ) (e) 2 te - 2 t u ( t ) 3. An LTI system has impulse response h(t)= sin(20 πt ) 4 t cos(30 πt ). It rejects above: (a) 10 (b) 20 (c) 25 (d) 50 (e) Hertz. 4. Why would anyone use DSBSC modulation instead of AM radio? (a) Less bandwidth (b) Less power (c) Less noise (d) Simpler receiver (e) Simpler xmitter 5. The minimum sampling rate in RADIAN SECOND to reconstruct [sin(40 t ) sin(60 t )] / [ π 2 t 2 ] from its samples is barely greater than: (a) 80 (b) 120 (c) 160 (d) 200 (e) 240 6. sin(32 πt ) + sin(48 πt ) is sampled at 40 SAMPLE SECOND , then lowpass-filtered to 20 Hz. Get: (a) 0 (b) sin(16 πt ) (c) 2 sin(16 πt ) (d) sin(32 πt ) (e) 2 sin(32 πt ) 7. Line spectrum (3-4j) δ ( ω + 2)+(1+j) δ ( ω + 1)+(1-j) δ ( ω - 1)+(3+4j) δ ( ω - 2) (i) Average power of the signal is: (ii) The sinusoidal component at ω = 1 is: 8. A real-valued signal is modulated using single-sideband (SSB) resulting in following
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern