A. stay wire
B. earth wire
C. structural components
D. all of the above

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Related Mcqs:

  1. As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only__________________?
    A. 31.25 percent of copper B. 33.3 percent of copper C. 66.7 percent of copper D. 125 percent of copper...
  2. The steel used in steel cored conductors is usually__________?
    A. alloy steel B. stainless steel C. mild steel D. high speed steel E. all of the above...
  3. Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is____________________?
    A. 25 percent B. 50 percent C. 75 percent D. 100 percent...
  4. A 3-phase 4 wire system is commonly used on________________?
    A. primary transmission B. secondary transmission C. primary distribution D. secondary distribution...
  5. In aluminium conductors, steel core is provided to____________?
    A. compensate for skin effect B. neutralise proximity effect C. reduce line inductance D. increase the tensile strength...
  6. In AC.S.R. conductors, the insulation between aluminium and steel conductors is_________?
    A. insulin B. bitumen C. varnish D. no insulation is required...
  7. Pin type insulators are generally not used for voltages beyond_________?
    A. 1 kV B. 11 kV C. 22 kV D. 33 kV...
  8. The following system is not generally used?
    A. 1-phase 3 wire B. 1-phase 4 wire C. 3-phase 3 wire D. 3-phase 4 wire...
  9. Multicore cables generally use________________?
    A. square conductors B. circular conductors C. rectangular conductors D. sector-shaped conductors E. none of the above...
  10. Overhead lines generally use__________________?
    A. copper conductors B. all aluminium conductors C. A.C.S.R. conductors D. none of these...
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