**ECET 365 DeVry Week 2 Quiz**

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**ECET 365 DeVry Week 2 Quiz**

**ECET365**

**ECET 365 DeVry Week 2 Quiz**

**Question :(TCO #5)**Identify the step size for an 8-bit analog-to-digital converter with Vref= 2.5 VDC?

- 10 millivolts
- 25 millivolts
- 4.9 millivolts
- 5 volts

**Question :(TCO # 5)**How many steps are available with a 10-bit ADC?

- 10
- 1024
- 512
- 256

**Question :(TCO #5)**What is the cutoff frequency for a low-pass filter with a resistor R = 3000 and a capacitor C = .01 µf?

- f = 5.3 KHz
- f = 3300 Hz
- f = 120 KHz
- f = 6 KHz

**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.

- blocks; blocks
- passes; blocks
- blocks; passes
- has; blocks

**Question :(TCO #5)**A bridge with R1= 5.1 K, R2= 2 K, and R3= 15 K can be at null if R4is _____.

- 10.5 K
- 5.88 K
- 588
- 1 K

**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?

- 4 Volts
- 20.4 Volts
- 3.3 Volts
- 15.3 Volts

**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?

- 01100110
- 00110011
- 00001101
- 01111011

**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?

- 2.5 VDC
- 5 VDC
- 1.25 VDC
- None of the above

**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?

- 90 kHz
- 40 kHz
- 85 kHz
- 60 khz

**Question : (TCO #5)**To model a nonlinear transducer, one can _____.

- use empirically determined nonlinear equation
- use a piecewise linear system
- use a lookup table located in memory
- All of the above