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Questions and Answers
What is the main difference between AC and DC?
What is the main difference between AC and DC?
- AC voltage can be easily transformed, while DC voltage cannot be transformed as easily
- AC is generated at power stations, while DC is generated in batteries
- AC changes direction periodically, while DC flows in only one direction (correct)
- AC is used in most appliances, while DC is used in certain types of machinery
What is the type of electrical current that is delivered to most homes and buildings?
What is the type of electrical current that is delivered to most homes and buildings?
- Both AC and DC
- DC
- AC (correct)
- Neither AC nor DC
What type of machinery requires a constant and stable power supply, such as certain types of motors?
What type of machinery requires a constant and stable power supply, such as certain types of motors?
- Machinery that uses AC
- Machinery that uses both AC and DC
- Machinery that uses neither AC nor DC
- Machinery that uses DC (correct)
What is the main difference between AC and DC?
What is the main difference between AC and DC?
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Which type of current is used in most appliances, electronic devices, and machinery that need to be plugged into a wall outlet?
Which type of current is used in most appliances, electronic devices, and machinery that need to be plugged into a wall outlet?
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Why is AC voltage more easily transformed to a higher or lower voltage level using a transformer than DC voltage?
Why is AC voltage more easily transformed to a higher or lower voltage level using a transformer than DC voltage?
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