Question
1
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If an electronic system produces a 48mV output voltage when a 12mV signal is applied, calculate the decibel value of the systems output voltage gain.
1. 12dB 2. 6dB 3. 20dB 4. 4dB
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Question
2
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If the output power from an audio amplifier is measured at 100W when the signal frequency is 1kHz, and 1W when the signal frequency is 10kHz. Calculate the dB change in power.
1. -10dB 2. -20dB 3. -30dB 4. 15dB
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