Feedback and its types MCQs January 8, 2026November 19, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. Wave shaping is the process of: (A) Amplifying signals (B) Filtering noise from a signal (C) Converting DC signals to AC signals (D) Changing the shape of a signal waveform 2. Purpose of a clipping circuit in wave shaping: (A) Limit the amplitude of the input signal (B) Eliminate high-frequency noise (C) Amplify the signal without distortion (D) Change the waveform frequency 3. A clipping circuit uses a diode to: (A) Increase the peak voltage (B) Limit the voltage to a specific level (C) Remove high-frequency components (D) Filter the signal 4. Typical application of a wave shaping circuit: (A) Voltage regulation (B) Signal amplification (C) Filtering AC signals (D) Generating square or pulse waveforms 5. In a diode clipper circuit, when input exceeds a threshold, the diode: (A) Passes the entire signal through (B) Clips the signal by conducting and shunting it (C) Blocks the signal entirely (D) Amplifies the signal 6. A high-pass filter in wave shaping allows signals: (A) Above a certain cutoff frequency (B) Below a certain cutoff frequency (C) In the range of the cutoff frequency (D) All frequencies 7. A low-pass filter allows signals: (A) Higher than cutoff frequency (B) Both above and below cutoff (C) Equal to cutoff frequency (D) Lower than cutoff frequency 8. Differentiator circuit in wave shaping is used to: (A) Amplify high-frequency signals (B) Pass all frequencies equally (C) Filter low-frequency noise (D) Detect rate of change of input signal 9. Integrator circuit in wave shaping is used to: (A) Increase input frequency (B) Filter high-frequency components (C) Amplify input signal (D) Sum input signal over time to produce a ramp output 10. Main characteristic of an attenuator: (A) Reduce amplitude (B) Increase bandwidth (C) Amplify the signal (D) Increase frequency 11. Signal conditioning refers to: (A) Amplifying signals to high voltages (B) Filtering unwanted frequencies (C) Removing noise from a signal (D) Modifying a signal to make it suitable for further processing 12. Common goal of signal conditioning: (A) Increase bandwidth (B) Increase signal frequency (C) Match signal to input requirements of next stage (D) Remove DC components 13. Device commonly used for amplifying weak signals: (A) Voltage regulator (B) Operational amplifier (Op-Amp) (C) Diode rectifier (D) High-pass filter 14. Isolation in signal conditioning is used to: (A) Increase noise (B) Amplify signal (C) Protect signal source from load (D) Decrease bandwidth 15. Filtering in signal conditioning is used to: (A) Convert analog to digital (B) Reduce amplitude (C) Separate desired from unwanted frequencies (D) Increase noise 16. In ADC, signal conditioning is important because: (A) Ensures signal is within ADC range (B) It increases voltage (C) Decreases noise (D) Converts analog to digital directly 17. Buffer amplifier in signal conditioning is used to: (A) Provide high input impedance, low output impedance (B) Increase power (C) Amplify linearly (D) Filter high-frequency noise 18. Sample-and-hold circuit is used to: (A) Integrate signal (B) Amplify signal (C) Sample input and hold value at specific time (D) Clip signal at certain voltage 19. In sensor signal conditioning, transimpedance amplifier: (A) Converts voltage to current (B) Converts current to voltage (C) Amplifies signal with low distortion (D) Filters unwanted frequencies 20. Comparator in digital system is used to: (A) Compare two signals and provide binary output (B) Convert analog to digital (C) Amplify signal (D) Filter noise