Analog Electronics MCQs (Part-2)

Which component is used to convert AC to DC?

A Resistor
B Inductor
C Rectifier
D Transformer

What is the forward voltage drop of a silicon diode in its conducting state?

A 0.3 V
B 0.7 V
C 1.1 V
D 0 V

What is the unit of capacitance?

A Ohm
B Farad
C Henry
D Coulomb

What is the primary purpose of an inductor in analog circuits?

A To store energy in a magnetic field
B To amplify signals
C To store energy in an electric field
D To convert DC to AC

What does the term “gain” in amplifiers refer to?

A Power loss
B Voltage or current increase
C Resistance reduction
D Signal filtering

Which type of amplifier operates only for less than 180 degrees of the input signal cycle?

A Class A
B Class B
C Class C
D Class AB

What does a transistor act as in a switching circuit?

A A resistor
B A capacitor
C A switch
D A voltage source

Which part of a transistor controls the flow of current?

A Collector
B Base
C Emitter
D None of the above

What is the function of a capacitor in a filter circuit?

A To block DC while allowing AC
B To amplify signals
C To reduce current
D To store magnetic energy

Which amplifier configuration is known for providing high input impedance?

A Common Collector
B Common Emitter
C Common Base
D Push-Pull

In an operational amplifier, what is the ideal value of the input offset voltage?

A Zero
B Infinite
C Negative
D Positive

What determines the frequency of oscillation in an RC oscillator?

A Resistance only
B Capacitance only
C Both resistance and capacitance
D None of the above

Which type of rectifier uses four diodes in its circuit?

A Half-wave rectifier
B Full-wave rectifier
C Bridge rectifier
D Voltage multiplier

What is the role of feedback in an oscillator circuit?

A To amplify noise
B To stabilize DC voltage
C To sustain oscillations
D To block signals

What is the bandwidth of an amplifier?

A The range of frequencies it can amplify
B The range of voltages it can handle
C The maximum gain it can provide
D The input impedance