SSC JE Electrical Engineering 2017 Set 4 Paper

Question : 155 of 200

Marks: +1, -0

In which of the following voltage sources, the movement of conductors in a magnetic field is used to produece voltage ?

in a thermo couple
in a zinc copper element
in a DC generator
in a transformer

Solution:

Voltage induced in DC generator is due to movement of conductors in a magnetic field.
According to Faraday’s law, change in flux linkage in a conductor produce EMF.

E={dϕ}/{dt}

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