GAQM CDCS-001 Exam - Topic 1 Question 61 Discussion

Actual exam question for GAQM's CDCS-001 exam

Question #: 61
Topic #: 1

[All CDCS-001 Questions]

AC is more easily distributed than DC. This is because:

AAC can be transmitted using lighter wires.

DWires have less resistance if they are carrying AC

BDC needs wires to be totally insulated, while AC wires can be bare, hung from insulator on pylons.

CAC can be transformed from a low voltage to a high voltage and back again with a transformer. DC cannot.

Show Suggested Answer

Suggested Answer: C

AC can be transformed from a low voltage to a high voltage and back again with a transformer, while DC cannot. This makes it easier to distribute AC electricity over long distances and is why it is used more widely than DC electricity. A and B are also true, as wires carrying AC can be bare and don't need to be totally insulated. Wires have less resistance when carrying AC electricity, which is why it is more efficient than DC.

by Brunilda at Jan 29, 2026, 03:20 AM

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Maia

5 days ago

I remember something about how AC can travel longer distances without losing power, but I'm not completely sure why that is.

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Carma

10 days ago

I think AC is easier to distribute because it can be transformed to different voltages more easily, right?

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Edna

15 days ago

I'm a bit confused on the details here. I know there's something about the properties of AC versus DC, but I can't quite recall the specifics of why AC is more easily distributed. I'll have to review my notes.

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Leontine

20 days ago

I remember learning about this in class. It has to do with the ability to change AC voltage levels, which allows for more efficient transmission over power lines compared to DC.

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Penney

26 days ago

Okay, I've got this. AC can be easily stepped up or down in voltage using transformers, which reduces power losses during transmission over long distances. DC doesn't have that same flexibility.

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Anastacia

1 month ago

Hmm, I'm not entirely sure about this one. I know AC and DC have different characteristics, but I can't quite remember the specifics of why AC is better for distribution. I'll have to think this through carefully.

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Barrie

1 month ago

I think this has to do with the properties of alternating current (AC) versus direct current (DC). AC can be more easily transformed to different voltages, which makes it better suited for distribution over long distances.

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