Full Wave Rectifier Questions

Rectifiers are the components that convert AC to DC. Half Wave Rectifiers and Full Wave Rectifiers are the two types of rectifiers.

A full-wave rectifier is a rectifier that converts the complete cycle of AC into pulsating DC. The full wave rectifier circuit features two diodes that are connected and centre tapped and a step-down transformer.

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Important Full Wave Rectifier Questions with Answers

1. The form factor of a full-wave rectifier is given as ______

  1. 0.5
  2. 2.2
  3. 1.11
  4. 3.14

Answer: c) 1.11

Explanation: The form factor of the full wave rectifier is 1.11.

2. What are the types of full wave rectifiers?

Full wave rectifiers are classified as:

  • Centre-tapped Full Wave Rectifier
  • Full Wave Bridge Rectifier

3. What does a centre tap full wave rectifier circuit consist of?

It features a load resistance, two diodes, and a centre-tapped transformer.

4. Choose YES or NO: Can a full wave rectifier be built using 4 diodes arranged as a bridge along with a standard transformer?

  1. YES
  2. NO

Answer: a) YES

Explanation: Using a standard transformer along with four diodes placed in the form of a bridge a full wave rectifier can be constructed.

5. The efficiency of the full wave rectifiers is _______

  1. 100%
  2. 22.24%
  3. 81.2%.
  4. 74.2%

Answer: c) 81.2%.

Explanation: The full wave rectifier offers an efficiency of 81.2%.

6. Which type of rectifier is used in electric welding?

  1. Half wave rectifier
  2. Full wave rectifier

Answer: b) Full wave rectifier

Explanation: A full wave rectifier is used for the purpose of electrical welding.

7. What are the five uses of a rectifier?

Five uses of rectifier are:

  1. The rectifier is used in soldering.
  2. It is used in voltage multiplier.
  3. Rectifier plays a major role in powering appliances.
  4. They are used along with transformers.
  5. A rectifier is used for the purpose of modulation.

8. What is the formula to calculate the ripple factor for a full-wave rectifier?

The ripple factor for a full-wave rectifier is given by the formula:

\(\begin{array}{l}\gamma =\sqrt{(\frac{V_{rms}}{V_{DC}})^{2}-1}\end{array} \)
.

9. How many diodes are used in a full wave rectifier?

  1. 2
  2. 3
  3. 4
  4. Option a) and c)

Answer: d) Option a) and c)

Explanation: In a full wave rectifier, 2 or 4 diodes are used depending on the type of circuit.

10. Which among the following has a high ripple factor?

  1. Half wave rectifier
  2. Full wave rectifier

Answer: a) Half wave rectifier

Explanation: The ripple factor of the half wave rectifier is higher than the full wave rectifier.

Practice Questions

  1. What is a rectifier?
  2. What is a bridge rectifier?
  3. What is the formula to calculate the DC Output Voltage of a full wave rectifier?
  4. Explain the two-diodes full-wave rectifier circuit.
  5. List the advantages and disadvantages of a half wave rectifier and a full wave rectifier.

Related links

Rectifier

Diode as a rectifier

Bridge rectifier

Half wave rectifier