Question
Download Solution PDFWhich of the following statements is NOT true about DC signal?
This question was previously asked in
SSC JE Electrical 05 Jun 2024 Shift 3 Official Paper - 1
Answer (Detailed Solution Below)
Option 2 : A DC voltage has both positive and negative values with change in time.
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RRB JE CBT I Full Test - 23
100 Qs.
100 Marks
90 Mins
Detailed Solution
Download Solution PDF| Aspect | AC Signal | DC Signal |
| Direction of Current | Periodically changes direction | Always flows in the same direction |
| Voltage Polarity | Alternates between positive and negative | Remains constant (either positive or negative) |
| Common Applications | Power distribution (grid electricity), motors, generators | Battery-powered devices, electronics, charging batteries |
| Examples | Household appliances, lighting, air conditioners | Mobile phone batteries, flashlights, electric vehicles |
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