Digital Signal Processing Mock Test 8

1. If a continuous time signal x(t) with spectrum X(F) is sampled at a rate F_s=1/T samples per second, then what is the scaled spectrum?

2. The following frequency characteristic is for which of the following filter?

3. Which of the filters have a frequency response as shown in the figure below?

4. The frequency response shown in the figure below belongs to which of the following filters?

5. Which of the following is a low pass-to-band pass transformation?

6. If a continuous time signal x(t) with spectrum X(F) is sampled at a rate F_s=1/T samples per second, the spectrum of the sampled signal is _____________

7. It is better to perform the mapping from an analog low pass filter into a digital low pass filter by either of these mappings and then perform the frequency transformation in the digital domain.

8. An analog filter can be converted into digital filter by approximating the differential equation by an equivalent difference equation.

9. When an application requires a linear phase filter, it should be an FIR filter.

10. If the conversion technique is to be effective, the jΩ axis in the s-plane should map into the unit circle in the z-plane.