Electrical Energy Conversion Quiz

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Which material would be most suitable as a low-resistance ground conductor due to its large cross-sectional area?

Nichrome

Cast-iron (correct)

Copper

Steel

Which of the following materials has a positive temperature coefficient of resistance?

Gold (correct)

Silicon

Nichrome

Aluminum

What type of material would have a negative temperature coefficient of resistance?

Copper

Silicon (correct)

Nichrome

Silver

What is the function of a thermistor in an electronic device?

Decrease resistance with temperature Signup and view all the answers

Which material would be most suitable for heating elements due to its composition of nickel and chromium?

Nichrome Signup and view all the answers

What is the unit of measurement for the intensity of charge flow?

Amperes Signup and view all the answers

Which type of materials allow charges to pass through them easily?

Metals Signup and view all the answers

What is the role of conductors in electrical energy conversion?

Allow charges to pass through easily for conversion Signup and view all the answers

Which type of elements are non conductors in their natural state?

Non-metals Signup and view all the answers

What type of elements have properties of both metals and nonmetals?

Metalloids Signup and view all the answers

In which type of elements do free electrons allow electricity to flow easily?

Metals Signup and view all the answers

Which type of materials are capable of behaving as either a conductor or an insulator under specific conditions?

Metalloids Signup and view all the answers

If a conductor 100 m long and made of platinum has a resistance of 9.91 ohms, what would be the resistance of a conductor of the same diameter but 200 m long?

19.82 ohms Signup and view all the answers

Which material listed in Table 2 has the highest resistance per 100m length and 1 mm² cross-sectional area?

Nichrome Signup and view all the answers

Why is silver used in relay contacts and printed circuit boards despite its rapid oxidation and high cost?

Due to its fair resistance to corrosion and low resistance Signup and view all the answers

Which material is suitable for wiring due to its low resistance, low cost, fair resistance to corrosion, and good flexibility?

Copper Signup and view all the answers

Why is gold often used to plate contacts and connectors even though it has higher resistance than copper?

Because gold does not readily oxidize and is very soft Signup and view all the answers

Which material is practical for bulb elements due to its properties?

Tungsten Signup and view all the answers

Electrical Energy Conversion Quiz

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Questions and Answers

Which material would be most suitable as a low-resistance ground conductor due to its large cross-sectional area?

Which of the following materials has a positive temperature coefficient of resistance?

What type of material would have a negative temperature coefficient of resistance?

What is the function of a thermistor in an electronic device?

Which material would be most suitable for heating elements due to its composition of nickel and chromium?

What is the unit of measurement for the intensity of charge flow?

Which type of materials allow charges to pass through them easily?

What is the role of conductors in electrical energy conversion?

Which type of elements are non conductors in their natural state?

What type of elements have properties of both metals and nonmetals?

In which type of elements do free electrons allow electricity to flow easily?

Which type of materials are capable of behaving as either a conductor or an insulator under specific conditions?

If a conductor 100 m long and made of platinum has a resistance of 9.91 ohms, what would be the resistance of a conductor of the same diameter but 200 m long?

Which material listed in Table 2 has the highest resistance per 100m length and 1 mm² cross-sectional area?

Why is silver used in relay contacts and printed circuit boards despite its rapid oxidation and high cost?

Which material is suitable for wiring due to its low resistance, low cost, fair resistance to corrosion, and good flexibility?

Why is gold often used to plate contacts and connectors even though it has higher resistance than copper?

Which material is practical for bulb elements due to its properties?

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