AC vs DC Transmission Quiz

What is a key advantage of AC transmission over DC transmission?

• Lower power loss over long distances.

• Easier to step up and step down voltage.

• Requires simpler transformers.

• Requires fewer components for operation.

Which system typically requires more expensive converters for long-distance transmission?

• AC

• DC

• Both AC and DC

• None of the above

What is one disadvantage of DC systems compared to AC systems?

• High energy loss in transmission.

• Higher maintenance costs.

• Reliability issues in normal operation.

• Difficulty in stepping up or down voltage.

Why is AC more suitable for distribution in residential areas?

• It is easier to store energy in AC form.

• AC voltage is easier to regulate for appliances.

• AC requires fewer wires for operation.

• AC transmits power with no energy loss.

Which system is primarily used for high-voltage, long-distance power transmission?

• AC

• DC

• Both AC and DC are equally used.

• Neither AC nor DC is suitable for long-distance transmission.

How does resistance affect DC systems during long-distance transmission?

• It causes a minimal voltage drop.

• It improves the efficiency of the system.

• It has no effect on performance.

• It causes significant power losses.

Which of the following is a major benefit of DC transmission over AC transmission for very long distances?

• Lower installation costs.

• Reduced power loss.

• Simplified voltage conversion.

• Less dependence on substations.

Why are AC transformers used in distribution systems?

• To store energy efficiently.

• To convert power into DC.

• To change voltage levels for efficient distribution.

• To maximize resistance across the system.

Which system has simpler and more affordable maintenance for local power distribution?

• DC

• AC

• Both require the same level of maintenance.

• Neither AC nor DC requires maintenance.

What is one challenge of implementing DC systems in modern grids?

• DC cannot transmit power over long distances.

• DC does not work with renewable energy sources.

• DC requires expensive conversion equipment.

• DC systems lack efficiency in low-voltage areas.