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3 years ago

PLEASE ANSWER THIS IS FOR A TEST

Mathematics

2 answers:

Fed [463]3 years ago

8 0

B, because solve the area which is base and height and it equals to 157.62

bearhunter [10]3 years ago

7 0

Answer:

The answer is c

Step-by-step explanation:

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A transformer increases the input voltage from 12V to 12,000V. What is the ratio of the number of wire turns on the primary coil

erma4kov [3.2K]

Answer:

$\frac{n_p}{n_s}=\frac{1}{1000}$

Step-by-step explanation:

Given voltage of primary coil is $V_p=12V$

And voltage of secondary coil is $V_s=12,000V$

A transformer is a device that contains primary and secondary coil. These coils are mounted on soft iron. The change in voltage depends upon the number of turns of primary coil $(n_p)$ and secondary coil $(n_s)$ .

Following equation represents the relation between them.

$\frac{V_s}{V_p} =\frac{n_s}{n_p}\\\\\frac{12,000}{12}=\frac{n_s}{n_p}\\\\1000=\frac{n_s}{n_p}$

Then, ratio of the number of wire turns on the primary coil to the number of turns on the secondary coil is

$\frac{n_p}{n_s}=\frac{1}{1000}$

5 0

4 years ago

P(more than z=-2.59)is?

romanna [79]

Neither p or z ISNT A NUMBER SO DO ONE WITH A NUMBER THAT QUESTIPON IS WRONG
EEEEEEE

7 0

4 years ago

X-2y=10 x+3y=5 please hellppppppp

Marta_Voda [28]

Answer:

x=8,y=-1

Step-by-step explanation:

x-2y=10

x=10+2y

10+2y+3y=5

5y=-5

y=-1

x-2(-1)=10

x=8

3 0

3 years ago

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Which fraction is less then 1/3 or 1/5

kolezko [41]

Answer:

1/12

Step-by-step explanation:

it is correct i know it is

3 0

3 years ago

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B2≤4 What is the solution to the inequality? b≥8 b≤8 b≤2 b≥2

Allisa [31]

The solution is the third one:
b≤2

8 0

4 years ago

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