Atransformer is to be used to provide power for a computer drive. the number of turns in the primary is 1000, and it delivers a secondary current of 600 milliamperes (ma) at a secondary voltage of 8.0 v for the drive. a voltage of 400 volts is applied across the primary. what kind of transformer is this? a. step upb. loadc. step-downd. ac

C.Step-Down

Explanation:

Given that

Number of turn in the primary N₁= 1000

Secondary current I₂= 600 mA

Secondary voltage V₂= 8 V

Primary voltage V₁= 400 V

From the above information we can say that output voltage is low compare to input voltage.

V₂ < V₁

We know that if

1 . V₂ < V₁  - Then transformer will be step down .

2. V₂ > V₁  - Then transfer will be step up .

Here

V₂ < V₁  ( 8 V < 400 V)

So the transformer is step down transformer.

C.Step-Down

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

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explanation:

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this