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Nikiter

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hi there, im taking a electronics course right now (do it at home type) and im stuck on 4 questions that im tired looking answeres for.....so this is why im here....to get help and if somebody could explain me the answeres for them.....that would be awesome

anyways lets get to it

#1
In a 70V speaker feed system, which of the following voltages obtained from a tap on the line trasformer will cause 8Ohm speaker to consume 8W?

A. 6.3V
B. 10V
C. 5.6V
D. 8V


#2
A battery that you CANNOT recharge will contain

A. a acid electrolyte
B. an alkaline electrolyte (i believe this is the right answer but check me)
C. a carbon electrode
D. a nickel electrode

#3
If an 1100Hz signal and 6000Hz signal are fed simultneously to the input of an amplifier, the four requencies at the output (not including harmonics) will be

A. 1100Hz, 600Hz, 550Hz, and 3000Hz
B. 1100Hz, 600Hz, 2450Hz, and 3550Hz
C. 1100Hz, 600Hz, 4900Hz, and 7100Hz
D. 1100Hz, 600Hz, 9800Hz, and 24000Hz

#4
When an FM radio transmitter is modulated, what happens to the power output on the power output meter?

A. It rises slightly
B. It doubles
C. It remains constant
D. It falls

I would really apreciate your help.
Thank you all.
 
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Nikiter

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