DIODE

In a half wave rectifier, diode conducts for ________ part of the input cycle

• Quarter
• Half
• Full
• Zero

A half wave rectifier has _______ number of diodes.

• 4
• 2
• 1
• 3

The basic reason why a full wave rectifier has twice the efficiency of a half wave rectifier is that

• it has two diodes
• its ripple factor is much less
• it utilizes both half-cycle of the input
• its output frequency is double the line frequency

In a rectifier, larger value of filter (or shunt) capacitor results in

• large peak-to-peak value of ripple voltage in the output.
• less peak-to-peak value of ripple voltage in the output.
• less output frequency in the output
• no change happens in output ripple voltage

The basic purpose of filter is to

• minimize variations in ac input signal
• suppress harmonics in rectified output
• remove ripples from the rectified output
• stabilize dc output voltage

The process of converting alternating current (AC) to direct current (DC) is also called as _____

• Filteration
• Rectification
• Inversion
• Clipping

Frequency of DC is

• Zero
• 50 Hz
• 100 Hz
• 1 kHz

Full Wave Center-tapped Rectifier uses _____ no. of diodes

• 1
• 2
• 3
• 4

Electrolytic Capacitors are used as filters in rectifiers because

• large values are available in Electrolytic
• they look good
• they are most accurate
• None of the above

Bridge Rectifier uses _____ no. of diodes

• 1
• 2
• 3
• 4