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1) The loads on distributors systems are generally__________________? a. balanced b. unbalanced c. either of the above d. none of the above
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2) The material commonly used for insulation in high voltage cables is_______________? a. lead b. paper c. rubber d. none of the above
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3) Multicore cables generally use________________? a. square conductors b. circular conductors c. rectangular conductors d. sector-shaped conductors e. none of the above
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4) High voltage transmission lines use__________________? a. suspension insulators b. pin insulators c. both A. and B. d. none of the above
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5) The distributors for residential areas are______________? a. single phase b. three-phase three wire c. three-phase four wire d. none of the above
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6) Most of the high transmission lines in Pakistan are_______________? a. underground b. overhead c. either of the above d. none of the above
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7) The voltage of the single phase supply to residential consumers is_____________? a. 110 V b. 210 V c. 230 V d. 400 V
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8) Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ? a. Circulating current method b. Thevenin’s theorem c. Superposition of currents d. Direct application of Kirehhoffs laws e. All of the above
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9) A booster is a_________________? a. series wound generator b. shunt wound generator c. synchronous generator d. none of the above
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10) Which of the following D.C. distribution system is the simplest and lowest in first cost ? a. Radial system b. Ring system c. Inter-connected system d. None of the above
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