Mechatronics Final Exam Review with
well researched solutions for study
Systematic Errors - CORRECT ANSWERS--Definite causes
-Reproducible
-Leads to inaccuracies
Random Errors - CORRECT ANSWERS--Non-Specific causes
-Not Reproducible
-Leads to Imprecision
Blunders - CORRECT ANSWERS-Engineer/scientist makes a mistake
Estimating Error - CORRECT ANSWERS--Nominal value: same number of sig figs as nominal value
measured
-Error: Same number of decimal places as nominal value
Ideal Voltage Source - CORRECT ANSWERS--Zero output resistance
-Supply infinite current
Ideal Current Source - CORRECT ANSWERS--Infinite output resistance
-Supply infinite voltage
Ideal Voltmeter - CORRECT ANSWERS--Infinite input resistance
-Draws no current
, Ideal Ammeter - CORRECT ANSWERS--Zero input resistance
- No voltage drop across it
Real Voltage Source - CORRECT ANSWERS--Small output impedence
-Minimizes voltage drop
-ideally Vs=Vout
-Needs to be considered for low impedence circuits
Real Current Source - CORRECT ANSWERS--Very large output impedence
-Minimizes current division effect
-ideally I_s=I_out
-Important when driving circuits with large impedence
Real Voltmeter - CORRECT ANSWERS--Very large input impedence
-Typically an order of 1 to 10 Mohms
-Must be considered when measuring voltage across a circuit branch with large impedence
Real Ammeter - CORRECT ANSWERS--Small input impedence
-Minimizing voltage drop added to circuit
-Important when measuring a circuit branch with small impedence
Oscilloscopes: AC Coupling - CORRECT ANSWERS--Used when intent is to block unwanted DC component
of a signal
-Low frequency signals are attenuated (acts as a high pass filter)
-Takes time for system to stabilize (about 5 time constants)
well researched solutions for study
Systematic Errors - CORRECT ANSWERS--Definite causes
-Reproducible
-Leads to inaccuracies
Random Errors - CORRECT ANSWERS--Non-Specific causes
-Not Reproducible
-Leads to Imprecision
Blunders - CORRECT ANSWERS-Engineer/scientist makes a mistake
Estimating Error - CORRECT ANSWERS--Nominal value: same number of sig figs as nominal value
measured
-Error: Same number of decimal places as nominal value
Ideal Voltage Source - CORRECT ANSWERS--Zero output resistance
-Supply infinite current
Ideal Current Source - CORRECT ANSWERS--Infinite output resistance
-Supply infinite voltage
Ideal Voltmeter - CORRECT ANSWERS--Infinite input resistance
-Draws no current
, Ideal Ammeter - CORRECT ANSWERS--Zero input resistance
- No voltage drop across it
Real Voltage Source - CORRECT ANSWERS--Small output impedence
-Minimizes voltage drop
-ideally Vs=Vout
-Needs to be considered for low impedence circuits
Real Current Source - CORRECT ANSWERS--Very large output impedence
-Minimizes current division effect
-ideally I_s=I_out
-Important when driving circuits with large impedence
Real Voltmeter - CORRECT ANSWERS--Very large input impedence
-Typically an order of 1 to 10 Mohms
-Must be considered when measuring voltage across a circuit branch with large impedence
Real Ammeter - CORRECT ANSWERS--Small input impedence
-Minimizing voltage drop added to circuit
-Important when measuring a circuit branch with small impedence
Oscilloscopes: AC Coupling - CORRECT ANSWERS--Used when intent is to block unwanted DC component
of a signal
-Low frequency signals are attenuated (acts as a high pass filter)
-Takes time for system to stabilize (about 5 time constants)
