Op-Amp Astable Multivibrator Quiz

In industrial control systems, an op-amp-based astable multivibrator can be used to:

• Store energy for backup

• Generate continuous clock pulses for timing circuits

• Amplify weak sensor signals

• Switch high voltage devices directly

What is the typical output waveform of an op-amp-based astable multivibrator?

• Triangular wave

• Sawtooth wave

• Square wave

• Sine wave

In automotive applications, an astable multivibrator using op-amp can be used for:

• Motor speed control

• Headlight brightness control

• Seat heating regulation

• Blinking turn signal indicators

Which component primarily determines the frequency of an op-amp-based astable multivibrator?

• Diode

• Transistor

• Resistor and capacitor

• Transformer

In communication systems, astable multivibrators using op-amps are used for:

• Audio signal amplification

• Carrier signal demodulation

• Pulse generation and clock synchronization

• Antenna tuning

Why is an op-amp-based astable multivibrator preferred in low-power applications?

• It has high current gain

• It requires fewer active components

• It generates sinusoidal signals

• It eliminates the need for feedback

If the feedback resistor Rf​ is halved in the circuit, what happens to the frequency?

• Frequency doubles

• Frequency becomes half

• Frequency remains the same

• Output becomes DC

If the capacitor used in an op-amp astable multivibrator is increased, the frequency will:

• Increase

• Decrease

• Remain unchanged

• Become unstable

For a desired frequency of 1 kHz, and β=0.5, what value of capacitance C should be used with Rf=10 kΩ.

• 1 µF

• 0.5 µF

• 0.01 µF

• 0.05 µF

If β is increased in the astable multivibrator circuit, the time period:

• Decreases

• Increases

• Remains constant

• Oscillations stop