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Which of the following isn’t true?
- a)Both transformer and amplifier can provide voltage gain
- b)Both transformer and amplifier can provide current gain
- c)Both transformer and amplifier can provide power gain
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following isn’t true?a)Both transformer and amplifi...
For an ideal transformer the power input is always equal to the power output. In real conditions there is slight loss of power when transferring the power from an input source to an output source. Amplifiers only provide power gain.
Most Upvoted Answer
Which of the following isn’t true?a)Both transformer and amplifi...
Transformer vs Amplifier:
Transformer and amplifier are two different devices used in electrical circuits for different purposes. Let's compare the two in terms of voltage, current, and power gain.
Voltage Gain:
- A transformer can provide voltage gain by stepping up or stepping down the input voltage through electromagnetic induction.
- An amplifier can also provide voltage gain by increasing the amplitude of the input signal.
Current Gain:
- A transformer can provide current gain by stepping up or stepping down the input current proportionally to the turns ratio.
- An amplifier can also provide current gain by increasing the output current based on the input signal.
Power Gain:
- Here lies the key difference between a transformer and an amplifier. A transformer does not provide power gain, as it only transforms the voltage or current without adding any extra power.
- On the other hand, an amplifier can provide power gain by increasing both voltage and current simultaneously, resulting in higher power output compared to the input.
Conclusion:
- Both transformer and amplifier can provide voltage and current gain, but only an amplifier can provide power gain.
- Therefore, the statement that both transformer and amplifier can provide power gain is not true.
Transformer and amplifier are two different devices used in electrical circuits for different purposes. Let's compare the two in terms of voltage, current, and power gain.
Voltage Gain:
- A transformer can provide voltage gain by stepping up or stepping down the input voltage through electromagnetic induction.
- An amplifier can also provide voltage gain by increasing the amplitude of the input signal.
Current Gain:
- A transformer can provide current gain by stepping up or stepping down the input current proportionally to the turns ratio.
- An amplifier can also provide current gain by increasing the output current based on the input signal.
Power Gain:
- Here lies the key difference between a transformer and an amplifier. A transformer does not provide power gain, as it only transforms the voltage or current without adding any extra power.
- On the other hand, an amplifier can provide power gain by increasing both voltage and current simultaneously, resulting in higher power output compared to the input.
Conclusion:
- Both transformer and amplifier can provide voltage and current gain, but only an amplifier can provide power gain.
- Therefore, the statement that both transformer and amplifier can provide power gain is not true.
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