Economics of Transmission - MCQs with answers

Economics of Transmission - MCQs with answers

Q1. Which among these is the fundamental economical principle which influences the design of transmission lines?

a. Economic choice of conductor size.
b. Economic choice of transmission voltage.
c. Both (a) and (b)
d. Economic choice of transmission line length.

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Q2. The most economical area of conductor is that for which the total annual cost of transmission line is minimum. Which law states this?

a. Lenz’s law
b. Kelvin’s law
c. Faraday’s law
d. Ohm’s law

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Q3. The account of interest and depreciation on the capital cost of complete installation of transmission line is denoted by which factor?

a. Annual charge on capital outlay
b. Annual cost of energy wasted.
c. Both (a) and (b).
d. Neither of these.

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Q4. The annual charge is given by

a. P₁ + P₂ / a
b. (P₁ + P₂) * a
c. P₁ + P₂ * a
d. P₁ * a + P₂

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Q5. The annual cost of energy wasted is given by

a. P₁ / a
b. P₂ * a
c. P₂ / a
d. P₃ / a

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For Questions 6, 7 and 8 refer to the graph.

Q6. In the following graph what does the straight line represent?

a. Relation between annual charge and the area of cross section.
b. Relation between annual cost of energy wasted and area of cross section.
c. Both (a) and (b).
d. None of these.

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Q7. In the above graph what does curve 2 represent?

a. Relation between annual charge and the area of cross section.
b. Relation between annual cost of energy wasted and area of cross section.
c. Both (a) and (b).
d. None of these.
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Q8. What does the point P refer to?

a. Most economical power transmission.
b. Most economical area of cross section.
c. Both (a) and (b).
d. Most ideal point of transmission.

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