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Chapter 4: Q3MCQ (page 220)

Question:Alumoweld is an aluminum-clad steel conductor.

(a)True

(b) False

Short Answer

Expert verified

Answer

Therefore the correct option is (a) True.

Step by step solution

01

Explain the conductor Alumoweld

Alumoweld is a aluminum-clad steel conductor. This type of conductor is able to withstand very high temperature, even excess of 1508o C .

It is basically made up of a steel core around which a heat-resistant aluminum cover is fabricated.

02

Draw the conclusion

There is a small annular gap between the steel and first layer of aluminum strands to let the heat dissipate.

Thus the Alumoweld is nothing but a aluminum-clad steel conductor. Hence the given statement is true.

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Most popular questions from this chapter

The temperature dependence of resistance is also quantified by the relation R2=R1[1+α(T2-T1)] whereR1 andR2 are the resistances at Temperatures T1 andT2 , respectively, and αis known as the temperature coefficient of resistance. If a copper wire has a resistance of55Ω at role="math" localid="1655276953435" 20°C, find the maximum permissible operating temperature of the wire if its resistance is to increase by at most role="math" localid="1655277180970" 20°C. Take the temperature coefficient at data-custom-editor="chemistry" 20°C to be data-custom-editor="chemistry" α=0.00382.

Figure 4.37 shows the conductor configuration of a three-phase transmission line and a telephone line supported on the same towers. The power line carries a balanced current of250A/phaseat60Hz,while the telephone line is directly located below phaseb. Assume balanced three-phase currents in the power line. Calculate the voltage per kilometre induced in the telephone line.

For either single-phase two-wire line or balanced three-phase three-wire line with equal phase spacing and with conductor radius, the capacitance (line-to-neutral) inFm is given byCan=____

Question:A circle with diameter mil has an area of _______ c mil.

Rework Problem 4.39 if the phase spacing between adjacent conductors is (a) increased by 10% to 7.7 m or (b) decreased by 10% to 6.3m . Compare the results with those of Problem 4.39.
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