The breakdown of insulation of the cable can be avoided economically by the use of___________?

Related Mcqs:

The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to__________?

A. absence of harmonics B. non-existence of any stability limit C. smaller dielectric loss D. absence of ripples E. none of the above...

In single core cables armouring is not done to________?

A. avoid excessive sheath losses B. make it flexible C. either of the above D. none of the above...

Solid type cables are considered unreliable beyond 66 kV because___________?

A. insulation may melt due to higher temperature B. skin effect dominates on the conductor C. of corona loss between conductor and sheath material D. there is a danger of breakdown of insulation due to the presence of voids...

In cables the charging current__________?

A. lags the voltage by 90° B. leads the voltage by 90° C. lags the voltage by 180° D. leads the voltage by 180°...

Underground cables are laid at sufficient depth___________?

A. to minimise temperature stresses B. to avoid being unearthed easily due to removal of soil C. to minimize the effect of shocks and vibrations due to gassing vehicles, etc D. for all of the above reasons...