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T6C04

ELECTRONIC AND ELECTRICAL COMPONENTS · Circuit diagrams: use of schematics, basic structure; Schematic symbols of basic components

T6C04T6C →

What is component 3 in figure T-1?

Figure T-1 from the NCVEC question pool
  1. AResistor
  2. BTransistor
  3. CLamp
  4. DGround symbol
Why In Figure T-1, component 3 is drawn as a circle with an X (crossed lines) inside it, which is the standard schematic symbol for an incandescent lamp or indicator bulb. The circle represents the glass envelope and the crossed lines stand for the filament supports. Figure T-1 also contains a resistor (zigzag or rectangle), a transistor (circle with three leads and an arrow), and a battery, so learning which number goes with which symbol is what this question tests.
Watch out The transistor is the nearby symbol with three leads and an arrowhead on the emitter, and a ground symbol is a set of stacked horizontal bars or a triangle at the end of a single lead, not an enclosed circle.
Circle with an X = lamp lit up. In T-1: 1 resistor, 2 transistor, 3 lamp, 4 battery.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
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The rest of T6C

  1. T6C01 What is an electrical diagram using standard component symbols called?
  2. T6C02 What is component 1 in figure T-1?
  3. T6C03 What is component 2 in figure T-1?
  4. T6C04 What is component 3 in figure T-1?
  5. T6C05 What is component 4 in figure T-1?
  6. T6C06 What is component 6 in figure T-2?
  7. T6C07 What is component 8 in figure T-2?
  8. T6C08 What is component 9 in figure T-2?
  9. T6C09 What is component 4 in figure T-2?
  10. T6C10 What is component 3 in figure T-3?
  11. T6C11 What is component 4 in figure T-3?
  12. T6C12 Which of the following is accurately represented in electrical schematics?
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