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Lemur [1.5K]
2 years ago
5

An intelligence signal is amplified by a 65% efficient amplifier before being combined with a 250W carrier to generate an AM sig

nal. If it is desired to operate at 50% modulation, what must be the dc input power to the final intelligence signal amplifier
Engineering
1 answer:
Aleks04 [339]2 years ago
3 0

Answer:

"192.3 watt" is the right answer.

Explanation:

Given:

Efficient amplifier,

= 65%

or,

= 0.65

Power,

P_c=250 \ watt

As we know,

⇒ P_t=P_c(1+\frac{\mu^2}{2} )

By putting the values, we get

        =P_c(1+\frac{1}{2} )

        =1.5 \ P_c

Now,

⇒ P_i=(P_t-P_c)

        =1.5 \ P_c-P_c

        =\frac{P_c}{2}

DC input (0.65) will be equal to "(\frac{P_c}{2} )".

hence,

The DC input power will be:

= \frac{250}{2}\times \frac{1}{0.65}

= \frac{125}{0.65}

= 192.3 \ watt

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WINSTONCH [101]

Answer:

Explanation:

For automobile emission, a uniform standard is preferred, because no unnecessary advantage is given by it to any company that is located in particular states where the regional standards are less severe.

Since pollution has its impact across the states and in the whole of the USA, then there should be uniform standards across all the states. It will also invalidate the impact of regional standards as a factor in the selection of plant locations for the automobile company. It means that a state offering less valid emission standards, will attract more companies to herself and it will be against the other states who care more about the natural environment. It can make more states to opt for the permissive emission standards, that will be more harmful to the USA as a country, than the good. So, a uniform standard is preferred to eliminate it as a factor in plant location decisions.

Yes, uniform standards are beneficial to everyone, because it will bring effective control upon the pollution level because there will be no state where the culprit firm can hide. Besides, it is more effective as efforts done towards environment conservation.

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3 years ago
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8 0
3 years ago
A water reservoir contains 108 metric tons of water at an average elevation of 84 m. The maximum amount of electric energy that
zavuch27 [327]

Answer:

24.72 kwh

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Compare both xbox and playstaion. What are pros and cons between the two gaming systems. What is your game system of choice?
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slamgirl [31]

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Answer: Option D.

<u>Explanation:</u>

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3 years ago
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