8) In context of corona, which statement is not true ?

corona is voltage effect

corona takes place on short transmission lines

corona is accompanied with power loss

corona attenuates lightning surges

Answer is:

corona takes place on short transmission lines

they have high potential difference

they are closely spaced

they carry D.C. power

they have high potential difference and they are closely spaced

Answer is:

increasing the operating voltage

reducing the spacing between conductors

increasing the effective conductor diameter

any of the above

Answer is:

Mean free length

Atmospheric temperature

Number of ions

Size and charge per ion

Answer is:

increased inductance

increased reactance

increased power loss

all of the above

Answer is: