20E202 - NAS - Surprise Quiz - II

In a low-pass filter, how does the impedance behave as frequency increases?

• Increases indefinitely

• Decreases

• Remains constant

• Initially decreases, then increases

What is the characteristic impedance of a low-pass filter primarily determined by?

• The resistor and inductor values

• The input voltage

• The output frequency

• The capacitor value only

How does a high propagation constant influence the overall performance and quality of signal transmission in filters?

• Signals are attenuated quickly

• Signals are delayed significantly

• Signals are transmitted with minimal distortion

• Signals are amplified

Identify the type of filter you would use to eliminate noise from a signal while allowing the desired low-frequency signal to pass.

• High-pass filter

• Low-pass filter

• Band-pass filter

• Notch filter

In an active high-pass filter, which component is crucial for providing gain?

• Resistor

• Capacitor

• Inductor

• Op-Amp

How can driving point functions be used in system analysis?

• Predict steady-state behavior only

• Analyze transient responses only

• Evaluate both steady-state and transient behaviors

• Determine only the frequency response

Which of the following is an example of an active filter?

• RC filter

• LC filter

• Op-Amp filter

• Transformer filter

Identify the following correctly describes the relationship between poles and system response.

• All poles must be real for a stable system

• Complex conjugate poles can lead to oscillations

• Real poles indicate instability

• The number of poles does not affect the response

Which equation represents the relationship between time response and complex frequency?

• 
• 
• 
• 

In the context of filter design, what does a low-pass filter transfer function typically exhibit?

• A flat response at low frequencies and attenuation at high frequencies

• Constant gain across all frequencies

• Increased gain at all frequencies

• Attenuation at low frequencies and flat response at high frequencies