Devry ECET365 Week 2 Quiz

ECET 365 Week 2 Quiz.Question :(TCO #5) Identify the step size for an 8-bit analog-to-digital converter with Vref= 2.5 VDC?Student Answer:10 millivolts25 millivolts4.9 millivolts5 voltsComments:2.Question :(TCO # 5) How many steps are available with a 10-bit ADC?Student Answer:101024512256Comments:3.Question :(TCO #5) What is the cutoff frequency for a low-pass filter with a resistor R = 3000 and a capacitor C = .01 µf?Student Answer:f = 5.3 KHzf = 3300 Hzf = 120 KHzf = 6 KHzComments:4.Question :(TCO #5)A band-stop filter is a filter that _____ frequencies below low-limit and above high-limit frequencies and _____ frequencies between the limits.Student Answer:blocks; blockspasses; blocksblocks; passeshas; blocksComments:5.Question :(TCO #5) A bridge with R1= 5.1 K, R2= 2 K, and R3= 15 K can be at null if R4is _____.Student Answer:10.5 K5.88 K5881 KComments:6.Question :(TCO #5) An instrumentation amplifier with two buffers has a feedback resistor of 100 K. The two resistors from the buffer’s output to the input of the last stage OP-Amp are 1 K resistors. Voltage levels to the non-inverting buffer inputs. Voltage levels to the non-inverting buffer inputs are V1= .06 volt and V2= .02 volts. What is Voutof the instrumentation amplifier?Student Answer:4 Volts20.4 Volts3.3 Volts15.3 VoltsComments:7.Question :(TCO #5) An embedded system with an 8-bit analog-to-digital converter is connected to a transducer with an output voltage of 10 millivolts. This signal is amplified by an amplifier with a gain of 25. Assume that this signal level is appropriate for the ADC input. If the reference voltage of the ADC converter is 5 volts, what will be the output of the ADC in binary form?Student Answer:01100110001100110000110101111011Comments:8.Question :(TCO #5) An 8-bit analog-to-digital converter has maximum output voltage of 2.5 VDC. What is the reference voltage to this ADC?Student Answer:2.5 VDC5 VDC1.25 VDCNone of the aboveComments:9.Question :(TCO #5) A well-behaved analog signal with a frequency of 20 kHz is being sampled. What is the sampling frequency if frequency aliasing occurs?Student Answer:90 kHz40 kHz85 kHz60 khzComments:10.Question :(TCO #5) To model a nonlinear transducer, one can _____.Student Answer:use empirically determined nonlinear equationuse a piecewise linear systemuse a lookup table located in memoryAll of the above