Assertion (A): Single phase half-wave converter introduces a dc component into the supply line.
Reason (R) : The supply current taken from the source is unidirectional and is in the form of dc pulses
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A,
c)
A is true but R is false.
d)
A is false but R is true.
Correct answer is option 'A'. Can you explain this answer?

Question

Assertion (A): Single phase half-wave converter introduces a dc component into the supply line.
Reason (R) : The supply current taken from the source is unidirectional and is in the form of dc pulses

a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A,
c)
A is true but R is false.
d)
A is false but R is true.

Correct answer is option 'A'. Can you explain this answer?

Answer

Assertion (A): Single phase half-wave converter introduces a dc component into the supply line.
Reason (R): The supply current taken from the source is unidirectional and is in the form of dc pulses.

The correct answer is option 'A', which means that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

Explanation:
In order to understand the given assertion and reason, let's break it down into two parts and discuss each part separately.

Part 1: Single phase half-wave converter introduces a dc component into the supply line

Single phase half-wave converter is a rectifier circuit that converts alternating current (AC) into pulsating direct current (DC). It consists of a diode connected in series with a load and an AC source. The diode allows current to flow only in one direction, which means it allows only the positive half-cycle of the input AC waveform to pass through. During the negative half-cycle, the diode blocks the current.

As a result, the output current of the half-wave converter is a pulsating DC waveform, where the current flows only during the positive half-cycle and becomes zero during the negative half-cycle. This pulsating DC waveform has a significant ripple component, which means it is not pure DC. However, this pulsating DC waveform does have a constant, non-zero component, known as the DC component.

Therefore, it can be concluded that a single phase half-wave converter introduces a DC component into the supply line.

Part 2: The supply current taken from the source is unidirectional and is in the form of DC pulses

The supply current taken from the source in a single phase half-wave converter is unidirectional, meaning it flows in only one direction. During the positive half-cycle of the input AC waveform, the diode allows the current to flow through the load, creating a positive pulse of current. However, during the negative half-cycle, the diode blocks the current, resulting in zero current flow.

This means that the supply current taken from the source is in the form of DC pulses, where the current flows only during the positive half-cycle and is zero during the negative half-cycle.

Therefore, it can be concluded that the supply current taken from the source in a single phase half-wave converter is unidirectional and in the form of DC pulses.

Conclusion:

The assertion that a single phase half-wave converter introduces a DC component into the supply line is true, and the reason that the supply current taken from the source is unidirectional and in the form of DC pulses is the correct explanation of this assertion. Hence, the correct answer is option 'A'.

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