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A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output contains
- a)3 full waves of input
- b)3 half waves of input
- c)6 full waves of input
- d)6 half waves of input
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
A bridge type single phase cycloconverter changes the frequency f to f...
Explanation:
To understand why the correct answer is option B, let's break down the operation of a bridge type single phase cycloconverter.
1. Bridge Type Single Phase Cycloconverter:
A bridge type single phase cycloconverter is a power electronic device that converts the frequency of an AC power supply to a lower frequency. It consists of a bridge rectifier connected to the input AC supply, followed by a bridge inverter connected to the load.
2. Operation of Bridge Type Cycloconverter:
During the positive half cycle of the input AC supply, the bridge rectifier converts the AC input voltage to a pulsating DC voltage. This pulsating DC voltage is then fed to the bridge inverter, which converts it back to an AC voltage of the desired lower frequency.
3. Changing the Frequency:
In a bridge type cycloconverter, the output frequency can be changed by altering the firing angle of the bridge inverter. The firing angle determines the point in each half cycle of the input AC supply at which the bridge inverter starts conducting.
4. Output Contains 3 Half Waves of Input:
In the given question, it is stated that the bridge type cycloconverter changes the frequency from f to f/3. This means that the output frequency is one-third of the input frequency.
Since the cycloconverter operates on single-phase input, each half cycle of the input waveform is considered. Therefore, one half wave of the output waveform will be obtained from one-third of the input waveform.
Hence, the output waveform will contain 3 half waves of the input waveform, which is option B.
To understand why the correct answer is option B, let's break down the operation of a bridge type single phase cycloconverter.
1. Bridge Type Single Phase Cycloconverter:
A bridge type single phase cycloconverter is a power electronic device that converts the frequency of an AC power supply to a lower frequency. It consists of a bridge rectifier connected to the input AC supply, followed by a bridge inverter connected to the load.
2. Operation of Bridge Type Cycloconverter:
During the positive half cycle of the input AC supply, the bridge rectifier converts the AC input voltage to a pulsating DC voltage. This pulsating DC voltage is then fed to the bridge inverter, which converts it back to an AC voltage of the desired lower frequency.
3. Changing the Frequency:
In a bridge type cycloconverter, the output frequency can be changed by altering the firing angle of the bridge inverter. The firing angle determines the point in each half cycle of the input AC supply at which the bridge inverter starts conducting.
4. Output Contains 3 Half Waves of Input:
In the given question, it is stated that the bridge type cycloconverter changes the frequency from f to f/3. This means that the output frequency is one-third of the input frequency.
Since the cycloconverter operates on single-phase input, each half cycle of the input waveform is considered. Therefore, one half wave of the output waveform will be obtained from one-third of the input waveform.
Hence, the output waveform will contain 3 half waves of the input waveform, which is option B.
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A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output containsa)3 full waves of inputb)3 half waves of inputc)6 full waves of inputd)6 half waves of inputCorrect answer is option 'B'. Can you explain this answer?
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