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WorksheetsSK1 CH9 - RECTIFIER
Total questions: 10
Worksheet time: 5mins
What is the main function of a rectifier?
Convert DC to AC
Convert AC to DC
Increase AC voltage
Store electrical energy
Which component acts as a one-way valve in a rectifier circuit?
Capacitor
Diode
Transformer
Resistor
Which type of rectifier uses only one diode?
Full-wave bridge
Centre tap
Half-wave
Wheatstone bridge
What is the main advantage of DC over AC for electronics?
DC is easier to generate
DC is safer
DC is cheaper
DC uses less power
Which component in a DC power supply regulates voltage?
Diode
Transformer
Voltage regulator
Capacitor
What happens in a half-wave rectifier during the negative half cycle of AC?
Current flows normally
Current is blocked
Voltage doubles
Frequency increases
Which statement is TRUE about full-wave rectifiers?
They block both halves of AC
They allow only positive half cycles
They convert both halves of AC into DC
They use only one diode
Which type of full-wave rectifier uses four diodes?
Centre tap
Bridge rectifier
Half-wave
Wheatstone
In a centre-tap full-wave rectifier, what is the role of the transformer?
To invert AC signal
To provide two equal secondary voltages
To regulate DC output
To store energy
Why does a full-wave rectifier produce smoother DC than a half-wave rectifier?
It uses more diodes
It doubles the frequency of rectified output
It reduces voltage drop
It eliminates ripple completely
