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hram777 [196]
3 years ago
5

An autotransformer is used to reduce the voltage of a 100-kilovolt amp, 480-volt secondary of an isolated type transformer, to s

upply a 100-kilovolt amp load with 277 volts. What size autotransformer is needed? (Use the co-ratio to determine the size.)
Physics
1 answer:
tigry1 [53]3 years ago
5 0

Answer:

42KVA

Explanation:

Given data

High Voltage (HV)= 480V

Low Voltage (LV)= 277V

Fo find

Size of transformer=?

Solution

To find the size of transformer here we use the co-ratio.The Co-ratio is given as:

Co-Ratio= (HV - LV)/HV

where

HV is High Voltage

LV is Low Voltage

Now put the values we get

Co- Ratio=(480-277)/480=.42

So the size of transformer is 42KVA

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Using complete sentences and your own words describe some of the ways humans use water.
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Answer:

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Explanation:

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2 years ago
What force is required to accelerate a 385 kg couch at 0.2 m/s^2 ?
Juliette [100K]

Answer:

It takes 77 N

Explanation:

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6 0
2 years ago
*PLEASE HELP*
Jet001 [13]

Answer:

-54,200 m/s^2

Explanation:

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3 years ago
An insect meanders across a sidewalk. The insect moves 15cm to the right, 10cm up the sidewalk and 8cm to the left. What is the
IRISSAK [1]

Answer:12.206 cm,\theta =54.99^{\circ}

Explanation:

Given

Insect walks 15 cm to the right

so its position vector isr_1=15i

Now it moves 10 cm up so its new position vector

r_2=15i+10j

Now it moves 8 cm left so its final position vector is

r_3=15\hat{i}+10\hat{j}-8\hat{i}=7\hat{i}+10\hat{j}

so its displacement is given by

|r_3|=\sqrt{7^2+10^2}=\sqrt{149}=12.206 cm

For direction, let \theta is the angle made by its position vector with x axis

tan\theta =\frac{10}{7}=1.428

\theta =54.99^{\circ}

8 0
3 years ago
Given two vectors A= 4.00i + 7.00jand B= 5.00i-2.00ja.Find the magnitude of each vector.b.Find the vector differenceC= A –B, giv
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Answer:

444.99

Explanation:

8 0
3 years ago
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