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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Yesenia

15 days ago

Isn't DC safer for small devices though?

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Gilma

21 days ago

AC is cheaper to transmit over long distances, for sure.

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Lou

26 days ago

Wait, really? I thought DC was better for efficiency.

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Tiara

1 month ago

Totally agree, that's why it's used for long distances!

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Jovita

1 month ago

AC can be transformed to higher voltages easily.

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Jonelle

1 month ago

Transformers are the key - they allow you to change AC voltage levels, which is crucial for efficient power distribution.

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Caprice

2 months ago

Haha, I thought the answer was because AC stands for "Awesome Current" and DC stands for "Dull Current"!

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Jimmie

2 months ago

Alternating current is better for distribution because it can be easily converted to different voltages using transformers.

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Rosendo

2 months ago

The ability to use transformers to step up and step down AC voltage makes it more efficient for distribution.

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Laurel

2 months ago

AC is more easily distributed because it can be transmitted at high voltages, reducing transmission losses.

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Bette

2 months ago

I’m a bit confused about this. I thought DC was more efficient for short distances, but AC is better for long ones?

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Gregoria

2 months ago

I practiced a similar question about the advantages of AC over DC, and I think it has to do with the way transformers work.

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Maia

3 months 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

3 months ago

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

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Edna

4 months 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

4 months 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

4 months 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

4 months 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

4 months 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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