Question

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A generator rotates at 93 Hz in a magnetic field of 0.035 T . It has...

A generator rotates at 93 Hz in a magnetic field of 0.035 T . It has 650 turns and produces an rms voltage of 140 V and an rms current of 55.0 A .

Part A

What is the peak current produced?

Express your answer to three significant figures and include the appropriate units.

Part B

What is the area of each turn of the coil?

Express your answer to two significant figures and include the appropriate units.

Solutions

Expert Solution

part A:-

RMS current induced,

We have the RMS current,

So,The peak value of current,

Rounding to 3 significant figures,

Peak value of current,

Part B:-

Here we have the frequency of the rotation of generator,

Magnetic field,

Number of turns of armature,

RMS voltage induced,

ie,

So,The peak value of voltage,

Here angular velocity of rotation,

We have the emf induced in the generator,

So,The peak voltage from the above equation,

ie,Area of cross section of each turns of coil,

ie,

So,The area of the cross section of each turns of coil,(Rounded to 2 significant figures)

genius_generous answered 1 year ago

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