4 years ago

Hi i have time to talk u down???

Engineering

1 answer:

ivolga24 [154]4 years ago

6 0

Answer:

hii

Explanation:

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What is the difference between absorbed wavelengths and reflected wavelengths?

JulijaS [17]

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3 years ago

Three parallel three-phase loads are supplied from a 480V (line-line RMS), 60 Hz three-phase supply. The loads are as follows: L

Travka [436]

Answer:

The total system active power P = P_1 + P_2 + P_3 = 34.91 KW

Explanation:

Load 1: Active power P_1 = 20 HP = 14.91kW;

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$= 14.91\times tan(cos^{-}0.8) = 11.18 kvar
$

Load 2: Active power P_2 = 20 kW;

Reactive power Q2 = 0 since the load is purely resistive.

Load 3: Active power $P_3$ = 0 due to purely capacitiveload

Reactive power $Q_3$ = -20 Var

a) since all three loads are connected in parallel therefore

The total system active power P = P_1 + P_2 + P_3 = 34.91 KW

Total system reactive power Q = Q_1 + Q_2 + Q_3 = 11.18 + 0 -20 = -8.82 kVar

Since Q = 0, the power factor is unity.

Supply current per phase is given by

$I = \frac{P}{\sqrt{3}V_{L}}$

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3 years ago

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