|1 Crore+ students have signed up on EduRev. Have you?|
The theoretical maximum efficiency of a bridge rectifier circuit is
For a bridge rectifier circuit,
For ideal diode,
and hence maximum efficiency, η = 81.06%.
Ripple factor of a full-wave rectifier without filter will be
A full wave rectifier delivers 50 W to a load of 200 Ω. If the ripple factor is 1%, the AC ripple voltage-across the load is
DC power delivered to the load is
The ripple factor,
Therefore, the AC ripple voltage across the load,
VAC = 1 volt
A half wave rectifier is used to supply 24 V DC to a resistive load of 500 Ω and the diode has a forward resistance of 50 Ω. What is the maximum value of the AC voltage required at the input?
Average value of load current,
Maximum value of load current,
Therefore, maximum AC voltage required at the input is
What is the value of inductance to be used in the inductor filter connected to a full-wave rectifier operation at 60 Hz to provide a DC output with 4% ripple for a 100 Ω load?
The ripple factor for an inductor filter is
Diodes are used to clip voltages in circuits because they act as
When a capacitor is connected across the output terminals of a half or full-wave rectifier, the output voltage
The equivalent DC output voltage of a full-wave rectifier is ____ the equivalent DC output voltage of a half-wave rectifier.
Assertion (A): A high value of resistor is connected across the diode in a clamper circuit for better performance.
Reason (R): If this resistor is not present, the circuit will respond to sudden decrease in the magnitude of the input pulse train, but the response to sudden increase in the amplitude will cause improper response.
Assertion (A): Bridge arrangement is preferred over centre-tapped transformer arrangement for full-wave rectification.
Reason (R): The bridge arrangement improves the filtering action.
No filtering action is provided by bridge arrangement. Hence, reason is a false statement.