Transmission and Distribution objective questions with explanations

Transmission and Distribution objective questions with explanations

Q no 1 The underground system cannot be operated above 

             a ) 440 V

             b ) 11 kV

             c ) 33 kV

             d ) 66 kV

explanations

                  answer d ) 66 kV

Q no 2. The wooden poles well impregnated with creosite oil or any preservative compound have life

              a ) from 2 to 5 years

              b ) 10 to 15 years

              c ) 25 to 30 years

              d ) 60 to 70 years

explanations

                  answer  c ) 25 to 30 years

Q no 3 . The usual spans with R.C.C poles are 

              a ) 40 - 50 meters 

              b ) 60 - 100 meters

              c ) 80 - 100 meters

              d ) 300 - 500 meters

    explanations

                  answer   c ) 80 - 100 meters