FC ATT MAIN EXAMINATION 2026 SET QUESTIONS AND
ANSWERS RATED A+
✔✔RC Phase Shift Oscillator Has 2 - ✔✔Transistors
✔✔RC Phase Shift Oscillator Q1 - ✔✔Oscillator amplifier (Common E)
✔✔RC Phase Shift Oscillator Q2 - ✔✔Buffer transistor (Common C)
✔✔RC Phase Shift Oscillators Have How many Degrees Phase Shift - ✔✔360 Phase
Shift (180 from Common E)(180 3 C)
✔✔RC Phase Shift Oscillator TS - ✔✔Check frequency calculated vs. measured
✔✔RC Phase Shift Oscillator Share - ✔✔R3
✔✔Crystal Oscillator Letter Deisignation - ✔✔Y
✔✔Crystal Oscillator Have a Small Amount - ✔✔Capacitance (Cm)
✔✔Drift is Caused by - ✔✔Temp change
✔✔Vibration in Crystal Are Know As - ✔✔Piezoelectric effect
✔✔Crystal Oscillators Crystal Determins The - ✔✔Frequency
✔✔1st Step to TS RC Phase and Crystal Oscillators - ✔✔Measure output
✔✔2nd Step to TS RC Phase and Crystal Oscillators - ✔✔Measure input
✔✔3rd Step to TS RC Phase and Crystal Oscillators - ✔✔Measure Q(semiconductor
componets)
✔✔4th Step to TS RC Phase and Crystal Oscillators - ✔✔Measure resistance
measurements on feedback
✔✔5th Step to TS RC Phase and Crystal Oscillators - ✔✔Measure resistance in output
circuit
✔✔Purpose of a Sawtooth Generator - ✔✔Square wave input to Sawtooth output
✔✔In a Sawtooth C2 Charges Through - ✔✔R2 to Vcc
, ✔✔In a Sawtooth C2 Discharges Through - ✔✔Ground to Q1 back to C2
✔✔Sawtooth Generator (When Frequency Increases) - ✔✔Amp increases, and charge
curve increases
✔✔Sawtooth Generator (When Frequency Decreases) - ✔✔Amp decreases, and
charge curve decreases
✔✔Sawtooth Generator (R2 and C2) - ✔✔Affect TC
✔✔Sawtooth Generator High TC - ✔✔High frequency, low amplitude, high Linearity
✔✔Sawtooth Generator Low TC - ✔✔Low frequency, high amplitude, low linerarity
✔✔Blocking Oscillator Purpose - ✔✔Dc in, short rectangular pulses out
✔✔A Blocking Oscillator is - ✔✔any oscillator that cuts off oscillations at a
predetermined time
✔✔Free Running Means - ✔✔No input is required
✔✔Free Running Oscillator (Vcc determines) - ✔✔Amplitude
✔✔Free Running Oscillator (D1) - ✔✔Prevents inductive kickback
✔✔Inductive Kickback - ✔✔Spike in voltage from collapse of magnetic field
✔✔Triggered Blocking Oscillator Needs - ✔✔An input signal
✔✔Purpose of Triggered Blocking Oscillator - ✔✔Improves shape of input pulses
✔✔Triggered Blocking Oscillator (When Q1 is Forward Bias) - ✔✔T1 primary induces
voltage onto secondary coil
✔✔Non-Sine Wave Oscillator TS Sawtooth - ✔✔No output without and input
✔✔1st Step Non-Sine Wave Oscillator TS - ✔✔Check output
✔✔2nd Step Non-Sine Wave Oscillator TS - ✔✔Check input
✔✔3rd Step Non-Sine Wave Oscillator TS - ✔✔Power off, check Q
✔✔4th Non-Sine Wave Oscillator TS - ✔✔Check circuit
ANSWERS RATED A+
✔✔RC Phase Shift Oscillator Has 2 - ✔✔Transistors
✔✔RC Phase Shift Oscillator Q1 - ✔✔Oscillator amplifier (Common E)
✔✔RC Phase Shift Oscillator Q2 - ✔✔Buffer transistor (Common C)
✔✔RC Phase Shift Oscillators Have How many Degrees Phase Shift - ✔✔360 Phase
Shift (180 from Common E)(180 3 C)
✔✔RC Phase Shift Oscillator TS - ✔✔Check frequency calculated vs. measured
✔✔RC Phase Shift Oscillator Share - ✔✔R3
✔✔Crystal Oscillator Letter Deisignation - ✔✔Y
✔✔Crystal Oscillator Have a Small Amount - ✔✔Capacitance (Cm)
✔✔Drift is Caused by - ✔✔Temp change
✔✔Vibration in Crystal Are Know As - ✔✔Piezoelectric effect
✔✔Crystal Oscillators Crystal Determins The - ✔✔Frequency
✔✔1st Step to TS RC Phase and Crystal Oscillators - ✔✔Measure output
✔✔2nd Step to TS RC Phase and Crystal Oscillators - ✔✔Measure input
✔✔3rd Step to TS RC Phase and Crystal Oscillators - ✔✔Measure Q(semiconductor
componets)
✔✔4th Step to TS RC Phase and Crystal Oscillators - ✔✔Measure resistance
measurements on feedback
✔✔5th Step to TS RC Phase and Crystal Oscillators - ✔✔Measure resistance in output
circuit
✔✔Purpose of a Sawtooth Generator - ✔✔Square wave input to Sawtooth output
✔✔In a Sawtooth C2 Charges Through - ✔✔R2 to Vcc
, ✔✔In a Sawtooth C2 Discharges Through - ✔✔Ground to Q1 back to C2
✔✔Sawtooth Generator (When Frequency Increases) - ✔✔Amp increases, and charge
curve increases
✔✔Sawtooth Generator (When Frequency Decreases) - ✔✔Amp decreases, and
charge curve decreases
✔✔Sawtooth Generator (R2 and C2) - ✔✔Affect TC
✔✔Sawtooth Generator High TC - ✔✔High frequency, low amplitude, high Linearity
✔✔Sawtooth Generator Low TC - ✔✔Low frequency, high amplitude, low linerarity
✔✔Blocking Oscillator Purpose - ✔✔Dc in, short rectangular pulses out
✔✔A Blocking Oscillator is - ✔✔any oscillator that cuts off oscillations at a
predetermined time
✔✔Free Running Means - ✔✔No input is required
✔✔Free Running Oscillator (Vcc determines) - ✔✔Amplitude
✔✔Free Running Oscillator (D1) - ✔✔Prevents inductive kickback
✔✔Inductive Kickback - ✔✔Spike in voltage from collapse of magnetic field
✔✔Triggered Blocking Oscillator Needs - ✔✔An input signal
✔✔Purpose of Triggered Blocking Oscillator - ✔✔Improves shape of input pulses
✔✔Triggered Blocking Oscillator (When Q1 is Forward Bias) - ✔✔T1 primary induces
voltage onto secondary coil
✔✔Non-Sine Wave Oscillator TS Sawtooth - ✔✔No output without and input
✔✔1st Step Non-Sine Wave Oscillator TS - ✔✔Check output
✔✔2nd Step Non-Sine Wave Oscillator TS - ✔✔Check input
✔✔3rd Step Non-Sine Wave Oscillator TS - ✔✔Power off, check Q
✔✔4th Non-Sine Wave Oscillator TS - ✔✔Check circuit
