2 years ago

What type of wave is shown below?

Physics

1 answer:

Elena-2011 [213]2 years ago

5 0

Answer:

B. Transverse wave.

Explanation:

Because it has troughs and crests.

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2 years ago

A generator produces 60 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted thro

aalyn [17]

Answer:

The percentage power lost in the transmission line if the voltage not stepped up is 50%.

Explanation:

Given that,

Current = 60 A

Voltage = 120 V

Resistance = 1.0 ohm

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Using formula of power

$P=I\times V$

Where,I =current

V = voltage

Put the value into the formula

$P=60\times120$

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We need to calculate the percentage power lost in the transmission line

If the voltage is not stepped up

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$P'=I^2\times R$

Put the value into the formula

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The percentage power loss P''

$P''=\dfrac{P'}{P}\times100=\dfrac{3600}{7200}\times100$

$P''=50\%$

Hence, The percentage power lost in the transmission line if the voltage not stepped up is 50%.

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2 years ago