Power Systems
Critical disruptive voltage is a voltage at which

 both 1 and 2
 nether 1 nor 2
 corona is visible with blue or violet colour
 corona is just initiated

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Power Systems
Which statement is not correct for the transmission line parameter R, L, G and C

 At high frequencies at which most of communication system operate the internal inductance of the conductor is neglected.
 G = I/R. R is the AC resistance per unit length of conductor C.
 For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog
 The line parameter R,L,G and C are uniformly distributed along the entire length of the line C.

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Power Systems
Critical mass is

 a mass of fissionable material required to stop a chain reaction.
 none of these.
  minimum mass of fissionable material required to sustain chain reaction.
 maximum mass of fissionable material required to sustain a chain reaction.

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