8. A first order system such as a low-pass filter has a time constant of 20ms. What is the maximal sinusoidal input freq

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8 A First Order System Such As A Low Pass Filter Has A Time Constant Of 20ms What Is The Maximal Sinusoidal Input Freq 1 (86.17 KiB) Viewed 38 times

8. A first order system such as a low-pass filter has a time constant of 20ms. What is the maximal sinusoidal input frequency that will keep output error due to frequency response less than 1.0%. And what is the phase angle at that frequency. (5pts) Based on the idea of Example 1.3) A) 2.62 Hz, -18.2 degree: B) 1.13 Hz; -17.5 degrees C) 1.13 Hz; -8.11 degree D) 1.45 Hz; -12.8 degree: 9. The transfer function of an underdamped (< < 1) second-order low-pass filter has: (5pts) (hint: the operational transfer function is (D) The poles mean the roots of (D) denominator of the transfer function when it is set to 0) A) two complex conjugate poles. B) two identical real poles. C) two different real poles. D) one real pole and one imaginary pole. 10. Arduino Uno has 6 on-board Analog-to-Digital Converter (ADC) channels (connecting to Analog input pins) which allows you to read the data from an analog device. Each channel with the reconfigured 12-bit ADC will convert the analog value in the range of 0- 5v to digital value in the range of 0-4095 (2^12 - 1). If I use the Arduino to read a voltage signal from a potentiometer (the range is 0-5v2 the reading from the serial monitor of Arduino software displays 1600, what is the corresponding voltage value from the potentiometer? And if we want to use this signal to further control the brightness of LED via PWM control, we need to map the value from the range of 0-4095 to the range of 0-255. By doing val - map.val. 0, 4095, 0, 255). What should the value mapped to in the PWM range? (5pts) A) 3.00v; 125 B) 2 30x200 C) 1.95v; 100 D) 2.50v; 1501 7. Each beat of the normal human heart originates in the node. Electrocardiogram (ECG) can be used to measure heart activity. ECG measurement systems usually include primary limb leads augmented limb leads, and precordial leads. (Spts) A) AV node; 4; 4; 4 B) SA node: 4; 4; 6; C) SA node; 3; 3:6 D) AV node; 3; 3; 6;