Poles | Transmission And Distribution Objective Type Questions and answers

36.  Poles which carry transformers are usually

   A. Circular

   B. I-type

   C.A-type

   D. H-type

37.  Out of the following which type of poles are bulky?

   A. Transmission towers

   B. Concrete poles

   C. Tubular steel poles

   D. Wooden poles

38.  The usual spans with R.C.C.poles are

   A. 40-50 metres

   B. 60-100 metres

   C. 80-100 metres

   D. 300-500 metres

39.  The wooden poles will impregnated with creosite oil or any preservative compound have a life

   A. From 2 to 5 years

   B. 10 to 15 years

   C. 25 to 30 years

   D. 60 to 70 years

40.  Steel poles for transmission lines need protection against

   A. Borer

   B. Termites

   C. Corrosion

   D. All of the above

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