electronic circuits(module 1 and module 2)

The efficiency of a half-wave rectifier is approximately:

• 40.6%

• 81.2%

• 50%

In a full-wave rectifier, the frequency of the output ripple is:

• Double the input frequency

• Half of the input frequency

• Equal to the input frequency

The ripple factor of a half-wave rectifier is:

• 1.21

• 0.707

• 1.414

For a full-wave rectifier with capacitor filter, ripple decreases when:

• Capacitance increases

• Capacitance decreases

• Load resistance decreases

A capacitor filter is more effective at:

• High load resistance

• High load current

• Constant load current

In a zener voltage regulator, zener diode operates in:

• Forward bias

• Reverse breakdown region

• Reverse saturation region

The main purpose of a voltage regulator is to:

• Convert AC to DC

• Maintain constant output voltage

• Reduce ripple

A clipper circuit is used to:

• Remove a portion of the input signal

• Store charge

• Amplify the input signal

A clamper circuit shifts:

• The DC level of a signal

• The frequency of a signal

• The amplitude of a signal

The most stable biasing method for BJT is:

• Voltage divider bias

• Fixed bias

• Base bias