The Q of a tuned amplifier is generally ___________

The correct answer is: C. More than 10.

The Q factor of a tuned amplifier is a measure of its selectivity. A higher Q factor means that the amplifier is more selective, and will only pass a narrow band of frequencies. This is important for applications where it is necessary to reject noise or interference from other frequencies.

The Q factor of a tuned amplifier is typically in the range of 10 to 100. A Q factor of 10 means that the amplifier will pass a band of frequencies that is 10 times wider than the center frequency. A Q factor of 100 means that the amplifier will pass a band of frequencies that is 100 times wider than the center frequency.

A higher Q factor also means that the amplifier will have a higher gain. This is because the amplifier will be able to amplify the desired signal without amplifying the noise as much.

However, a higher Q factor also means that the amplifier will be more susceptible to oscillation. This is because the amplifier will be more sensitive to small changes in the input signal.

Therefore, the choice of Q factor for a tuned amplifier depends on the specific application. For applications where it is necessary to have a high degree of selectivity, a higher Q factor is desirable. However, for applications where it is necessary to avoid oscillation, a lower Q factor is desirable.

Here is a brief explanation of each option:

• Option A: Less than 5. This is not typically the case for tuned amplifiers. A Q factor of less than 5 would mean that the amplifier is not very selective, and would pass a wide band of frequencies. This would not be desirable in most applications.
• Option B: Less than 10. This is also not typically the case for tuned amplifiers. A Q factor of less than 10 would mean that the amplifier is not very selective, and would pass a wide band of frequencies. This would not be desirable in most applications.
• Option C: More than 10. This is the most common case for tuned amplifiers. A Q factor of more than 10 means that the amplifier is selective, and will only pass a narrow band of frequencies. This is desirable in most applications.
• Option D: None of the above. This is not a valid option.