COEDAD
  • 1. In LTSpice, what command key opens the component browser?
A) F2
B) F1
C) F3
  • 2. Which component value is used for R1 in the initial RC circuit analysis?
A) 220k
B) 5k
C) 10ΚΩ
D) 1ΚΩ
  • 3. Which initial value setting is correct for the pulse source configuration?
A) 5V
B) 10V
C) 0V
D) 1µF
  • 4. What is the proper rise time setting for the pulse source?
A) 1
B) 2ns
C) 1ns
D) 3
  • 5. What is the correct duration for running the transient analysis?
A) 5ms
B) 100ms
C) 20ms
D) 10ms
  • 6. Which analysis command is used for time-domain simulation?
A) .tran
B) .op
C) Pulse
D) .meas
  • 7. What is the proper method to measure capacitor charging time?
A) None of them
B) Using cursor differences in voltage vs. time plot
C) transient analysis
  • 8. Which waveform represents correct capacitor charging behavior?
A) Exponential rise to steady state
B) An exponential decay curve.
C) Exponential rise
  • 9. What determines the RC circuit's time constant?
A) R x C
B) C x R
C) R-C
D) R/C
  • 10. What is the correct starting frequency for AC analysis?
A) 0Hz
B) 1Hz
C) 5Hz
D) -1Hz
  • 11. How many points per decade are specified for frequency analysis?
A) 50
B) 120
C) 10
D) 100
  • 12. What represents the correct stop frequency for AC analysis?
A) 1MHz
B) Highest frequency
C) Low frequency
D) 2MHz
  • 13. Which plot type correctly shows frequency response?
A) gain
B) Bode plot
C) High frequency
D) Frequency
  • 14. What defines the -3dB point in frequency response?
A) Half power point (0.707 of peak amplitude)
B) Half point (0.70 of peak amplitude)
C) half of its maximum power.
  • 15. What is the correct peak voltage for the AC source in rectifier simulation?
A) 220V
B) 120V
C) 12V
D) 170 V peak
  • 16. Which capacitor value is specified for filtering in the power supply?
A) 1000μF
B) 10μF
C) 2200µF
D) 100μF
  • 17. What is the proper diode configuration for full-wave rectification?
A) Bridge configuration with four diodes
B) Bridge configuration with two diodes
C) Bridge rectifier
  • 18. Which measurement technique correctly determines ripple voltage?
A) None of them
B) difference between the maximum and minimm voltage
C) Peak-to-peak voltage measurement
  • 19. What parameter correctly indicates power supply efficiency?
A) Output power / Input power × 100%
B) Input power / output power x 100%
C) Input power x output power
  • 20. What op-amp model is specified for the non-inverting amplifier?
A) LT101
B) LT1001
C) LM741
D) LM1001
  • 21. Which power supply configuration is correct for the op-amp?
A) ±15V
B) -15V
C) 5V
D) 15V
  • 22. What gain setting is specified for the non-inverting amplifier?
A) 11
B) 10
C) 12
D) 13
  • 23. Which input signal is correct for testing the op-amp circuit?
A) 1 V peak sine wave
B) 2V sine wave
C) All of the above
D) 1V sine wave
  • 24. What is the correct method for bandwidth measurement?
A) Frequency at -3dB point from midband gain
B) Bandwidth
C) Sine wave
D) Frequency at 3dB point from midband gain
  • 25. What is the correct input resistor value for the differential amplifier?
A) 10ΚΩ
B) 120Ω
C) 20ΚΩ
D) 1ΚΩ
  • 26. Which parameter correctly measures differential amplifier performance?
A) Low Output Impedance
B) CMRR
C) High Input Impedance
  • 27. What is the proper feedback resistor value for matched differential gain?
A) 1ΚΩ
B) 10ΚΩ
C) 120
D) 220
  • 28. Which configuration best tests common-mode rejection?
A) difference amplifier configuration
B) Apply a common-mode signal
C) Identical signals applied to both inputs
  • 29. What is the correct method for measuring differential gain?
A) Apply a small differential input Vd=V-V-VdV+ -V
B) Output voltage / differential input voltage
C) Connect the inputs
  • 30. What is the specified cutoff frequency for the second-order low-pass filter?
A) 10kHz
B) drops by 3dB
C) 1kHz
D) drops by -3dB
  • 31. Which topology is specified for the active filter implementation?
A) VCVS filter topology
B) Sallen-Key
C) Swollen-key
  • 32. What is the correct phase shift at cutoff frequency?
A) -120 degrees
B) -90 Celsius
C) 80 degrees
D) -90 degrees
  • 33. Which parameter properly indicates filter roll-off rate?
A) 4 dB/decade
B) All of the above
C) -40 dB/decade
D) Filter order (n) or slope in dB/decade
  • 34. What is the correct damping ratio for optimal filter response?
A) 0.707
B) 0.770
C) 0707
D) 0.7777
  • 35. What is the correct input voltage for the regulator circuit?
A) 5V
B) 12V
C) 15V
D) ±15V
  • 36. Which load resistance value is specified for testing?
A) 2kΩ
B) 100Ω
C) 1ΚΩ
  • 37. What is the proper output voltage specification?
A) 120V
B) 5V
C) 15V
D) 12V
  • 38. Which parameter correctly measures load regulation?
A) AVout/Alload
B) AIIoad / AVout
C) Power supply
  • 39. What is the correct method for implementing current limiting?
A) Power supply
B) Parallel sense resistor with feedback
C) Series sense resistor with feedback
  • 40. Which oscillator type is specified in the lab guide?
A) Wien bridge
B) Phase-Shift Oscillator
C) Clap Oscillator
D) Colpitts Oscillator
  • 41. What determines the correct oscillation frequency?
A) Frequency-selective componentsi
B) Period and frequency
C) RC time constant
  • 42. Which component provides proper amplitude stabilization?
A) Amplitude stabilizer
B) AGC circuit with thermistor
C) Use a frequency counter
D) Use oscilloscope to see how the output frequency changes
  • 43. What is the correct method for measuring frequency stability?
A) oscilloscope to see how the output frequency changes
B) Use a frequency counter
C) Long-term frequency drift measurement
  • 44. Which parameter indicates proper oscillator startup?
A) Across the resistance
B) Closed loop gain
C) Exponential amplitude growth to steady state
  • 45. What is the specified switching frequency?
A) 1kHz
B) 15KHz
C) 100kHz
D) 50KHz
  • 46. Which control method is correct for the buck converter?
A) PWM feedback control
B) negative feedback control
C) Voltage-Mode Control (VMC)
  • 47. What is the proper method for measuring efficiency?
A) (Pin/Pout) x 100%
B) (Pout/Pin) x 100%
C) Pout x Pin x 100%
  • 48. Which parameter correctly indicates transient response?
A) Damping ration
B) Output voltage not settling time
C) Output voltage settling time
  • 49. What is the correct inductor value for the buck converter?
A) 100μΗ
B) 1000μΗ
C) 10μΗ
D) 1μΗ
  • 50. Which analysis type properly evaluates component variations?
A) AC analysis
B) Tolerance Analysis
C) Monte Carlo
D) transient analysis
  • 51. What is the correct method for creating custom components?
A) Using Netlist
B) Using . Meas command
C) Using.subckt definition
D) CAD
  • 52. Which command generates proper performance reports?
A) .meas
B) .param
C) .tran
D) .op
  • 53. What is the correct format for exporting netlists?
A) SPICE compatible image format
B) Plain Text
C) SPICE compatible text format
  • 54. Which approach correctly implements hierarchical designs?
A) All of the above
B) Top down design
C) Visual hierarchy
D) Symbol creation with subcircuits
  • 55. What is the correct simulation resolution setting?
A) Minimum timestep = 100 of smallest time constant
B) Maximum timestep = 1/100 of smallest time constant
C) Maximum timestep = 1/100 of Highest time constant
  • 56. Which convergence setting is proper for complex circuits?
A) min= 1-9
B) min= 1e-9
C) gmin=1e
D) .options
E) gmin = 1e-9
  • 57. What is the correct method for setting initial conditions?
A) .param
B) .step
C) .TRAN
D) .ic command with node voltages
  • 58. Which parameter properly controls simulation accuracy?
A) Reltol 1e-12
B) abstol
C) abstol 1e-12
D) Reltol
  • 59. What is the correct approach for handling convergence issues?
A) Tighten Convergence Settings
B) Reduce increment size
C) Refine the mesh
D) Modify gmin stepping
  • 60. Which method correctly exports waveform data?
A) Left-click plot, export data as text
B) Right-click plot, export data as text
C) File Export command from the Plot Pane
  • 61. What is the proper format for measurement expressions?
A) V(node1)-V(node2)
B) .MEAS
C) Node2
D) node1
  • 62. Which command correctly calculates RMS values?
A) .meas tran rms RMS V(out)
B) .param
C) .op
D) .tran
  • 63. What is the correct method for frequency domain analysis?
A) .op
B) .tran
C) .AC
D) .fft V(out)
  • 64. Which approach properly analyzes power dissipation?
A) .meas avg power = avg (V(n1)*I(R1))
B) .AC
C) .MEAS P_AVG AVG V(R1)*I(R1)
D) .param
E) .tran
  • 65. What is the correct method for component labeling?
A) Comment Text for descriptive labels and Net Name Labels/Ports
B) Prefix with functional description
C) Press F4 or the “label net"
D) Hierarchical prefix with functional description
  • 66. Which approach properly documents simulation settings?
A) using a text file to document
B) Add comments
C) Rename the schematic
D) SPICE directives with comments
  • 67. What is the correct file organization structure?
A) Separate folders for each analysis type
B) Dedicated folder for each individual circuit project
C) My Documents\LTspiceXVII
  • 68. Which naming convention is proper for simulation files?
A) ProjectName_CircuitType_Version
B) Clarity, functionality, and portability
C) .measure
  • 69. What is the correct method for version control?
A) External Version Control System (VCS)
B) use the .step param command
C) Sequential backup with date stamps
  • 70. Which approach correctly verifies circuit operation?
A) Systematic node voltage checking
B) Systematic, multi-analysis comparison
C) Verification vs. Validation
  • 71. What is the proper method for identifying simulation errors?
A) Error log analysis and stepping
B) Check for syntax and units
C) SPICE Error Log and the Waveform Viewer
  • 72. Which technique correctly validates results?
A) Cross-Verification
B) Theoretical calculation comparison
  • 73. What is the correct approach for debugging convergence issues?
A) Progressive component addition
B) Systematic process
  • 74. Which method properly verifies model accuracy?
A) Comparison with datasheet specifications
B) Comparison of simulation results against unknown datasheet parameters
  • 75. What is the correct capacitor value specified for the transient analysis task?
A) 1000uF
B) 1uF
C) 100uF
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