High voltage transmission lines use__________________?

Related Mcqs:

1. Overhead lines generally use__________________?

   A. copper conductors
   B. all aluminium conductors
   C. A.C.S.R. conductors
   D. none of these

2. For transmission of power over a distance of 200 km, the transmission voltage should be_________kv?

   A. 132 kV
   B. 66 kV
   C. 33 kV
   D. 11 kV

3. For transmission of power over a distance of 500 km, the transmission voltage should be in the range?

   A. 150 to 220 kV
   B. 100 to 120 kV
   C. 60 to 100 kV
   D. 20 to 50 kV

4. The voltage drop, for constant voltage transmission is compensated by installing__________?

   A. inductors
   B. capacitors
   C. synchronous motors
   D. all of above
   E. none of the above

5. Most of the high transmission lines in Pakistan are_______________?

   A. underground
   B. overhead
   C. either of the above
   D. none of the above

6. The operating voltage of high voltage cables is up to_______________?

   A. l.lkV
   B. 3.3kV
   C. 6.6kV
   D. llkV

7. Which of the following relays is used on long transmission lines?

   A. Impedance relay
   B. Mho’s relay
   C. Reactance relay
   D. None of the above

8. Which of the following are the constants of the transmission lines ?

   A. Resistance
   B. Inductance
   C. Capacitance
   D. All of the above

9. In transmission lines the cross-arms are made of________________?

   A. copper
   B. wood
   C. R.C.C.
   D. steel

10. Which of the following materials is used for overhead transmission lines ?

    A. Steel cored aluminium
    B. Galvanised steel
    C. Cadmium copper
    D. Any of the above