Logical Reasoning

PT133 · S1 · Q6 Small experimental vacuum tubes

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Small experimental vacuum tubes can operate in heat that makes semiconductor components fail.

Given

Small experimental vacuum VT → OH tubes can operate in heat that makes semiconductor components fail.

Any component whose OH + P → CS resistance to heat is greater than that of semiconductors would be preferable for use in digital circuits, but only if that component were also comparable to semiconductors in all other significant respects, such as maximum current capacity.

However, vacuum tubes' VT → ~CS maximum current capacity is presently not comparable to that of semiconductors.

6.

If the statements above are true, which one of the following must also be true?

  1. Correct

    Vacuum tubes are not now

    Why this is right

    The three statements VT → ~CS together imply this. ~CS → ~OH or ~P VT → OH ჻ VT → ~P

    Skill tested: Must be True · how this choice captures the argument's function is the move to repeat next time.

    82% picked this

  2. Once vacuum tubes and semiconductors

    Too Strong

    This is too strong twice. First, vacuum tubes and semiconductors might not be comparable in respects other than current capacity. Second, that vacuum tubes might be preferred for use in digital circuits is not the same as they will be used in digital circuits.

    10% picked this

  3. The only reason that vacuum

    Too Strong

    This is too strong twice. First, that vacuum tubes’ maximum current capacity is not comparable to semiconductors does not mean that it is too low—it could be too high. Second, this rules out other possible ways in which vacuum tubes and semiconductors are not comparable in significant respects.

    3% picked this

  4. Semiconductors will always be preferable

    Speculation

    The statements do not indicate that the relationship will remain true in the future.

    1% picked this

  5. Resistance to heat is the

    Too Strong

    Resistance to heat is an advantage that vacuum tubes have over semiconductors, but to say that it is the only advantage goes too far.

    3% picked this

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