Analog Electronics MCQs (Part-10)

What is the function of an analog-to-digital converter (ADC)?

A To amplify analog signals
B To convert analog signals to digital signals
C To convert digital signals to analog signals
D To filter noise from analog signals

What is the purpose of a digital-to-analog converter (DAC)?

A To amplify digital signals
B To filter noise in analog systems
C To convert digital signals into analog signals
D To convert analog signals into digital signals

Which component is essential in analog circuit design for voltage amplification?

A Resistor
B Transistor
C Diode
D Capacitor

What is SPICE simulation primarily used for?

A Testing physical hardware
B Designing mechanical systems
C Simulating electronic circuits
D Measuring temperature

What is thermal stability in analog circuits?

A Stability of the input signal
B Ability to dissipate heat effectively
C Resistance to noise
D Capability to maintain performance despite temperature changes

What type of amplifier is used to increase the strength of weak signals?

A Power amplifier
B Voltage amplifier
C Differential amplifier
D Buffer amplifier

What is the resolution of an ADC?

A The time it takes to convert a signal
B The smallest change in input signal it can detect
C The range of input signal it can handle
D The noise immunity of the ADC

Which parameter is critical in ensuring DAC accuracy?

A Slew rate
B Linearity
C Gain-bandwidth product
D Impedance

What is the purpose of hardware testing in analog circuits?

A To amplify signals
B To ensure the circuit operates as expected under real-world conditions
C To simulate circuit behavior
D To reduce noise

Which factor impacts thermal stability in transistors?

A Bandwidth
B Heat dissipation
C Power gain
D Frequency response

Which ADC type is the fastest for high-speed applications?

A Successive Approximation ADC
B Flash ADC
C Delta-Sigma ADC
D Integrating ADC

What is the primary drawback of flash ADCs?

A Low speed
B High power consumption and complexity
C Limited resolution
D Slow conversion rates

What does “signal amplification” refer to in analog circuits?

A Increasing signal power, voltage, or current
B Reducing noise
C Converting AC to DC
D Generating new signals

Which type of DAC is most accurate for high-resolution applications?

A Binary-weighted DAC
B R-2R Ladder DAC
C Flash DAC
D PWM DAC

Which SPICE analysis type is used to study frequency response?

A DC analysis
B AC analysis
C Transient analysis
D Noise analysis