MGVCL Exam Paper (30-07-2021 Shift 3)
દ્રશ્ય' શબ્દનો વિરુદ્ધાર્થ શબ્દ આપેલો વિકલ્પોમાંથી કયો છે?

દ્રષ્ટિવંત
દ્રષ્ટિ
અદ્રશ્ય
દ્રશ્યમાન

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MGVCL Exam Paper (30-07-2021 Shift 3)
The DC offset in fault current causes conventional over-current (OC) relays to :

reach remains unaffected due to DC offset
over-reach
sometimes under-reach and sometimes over-reach
under-reach

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MGVCL Exam Paper (30-07-2021 Shift 3)
A conductor having surface density is embedded in a dielectric medium of permittivity. The electric field in the medium is E. If it is known that the pressure p on the conductor surface is equal to the electric energy density in the medium, then p (in SI unit)is given by

σ²/(2πε)
σ²/(2ε)
σ/(4πε)
σ²/(4π)

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