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Home ‣ Electronics and Communication Engineering ‣ Microprocessors See What Others Are Saying!
  • Question

  • Assertion (A): Microprocessor 8085 has on-chip oscillator with inbuilt crystal.

    Reason (R): For frequency stability crystal oscillator is preferred.


  • Options
  • A. Both A and R are correct and R is correct explanation of A
  • B. Both A and R are correct but R is not correct explanation of A
  • C. A is correct R is wrong
  • D. A is wrong R is correct

  • Correct Answer
  • A is wrong R is correct 

    Explanation
    Crystal has to be connected externally to pins 1 and 2 of 8085.

    More questions

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    • Options
    • A. T is kept constant and Ton is varied
    • B. Ton is kept constant T is varied
    • C. both T and Ton are varied
    • D. either T or Ton is varied
      • Discuss
    • 2. The colour code on a carbon resistor is green-blue-yellow. The tolerance is

    • Options
    • A. ± 5%
    • B. ± 10%
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      • Discuss
    • 3. Wave guides are pressurised above normal atmospheric pressure for

    • Options
    • A. increasing the power handling capacity
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    • C. preventing higher modes from propagation
    • D. varying the wave impedance
      • Discuss
    • 4. A transmission line discontinuity is defined as any interruption in the uniformity of the line.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Which of the following is not a valid variable name in C?

    • Options
    • A. 1 a
    • B. a 1 2
    • C. a b 123
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      • Discuss
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    • Options
    • A. 10%
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      • Discuss
    • 7. Permeability is analogous to

    • Options
    • A. resistivity
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    • D. coercivity
      • Discuss
    • 8. In a Gunn diode oscillator drift velocity of electron is 107 cm/s and active region length is 10 x 10-4 cm. The natural frequency of oscillation is

    • Options
    • A. 1 MHz
    • B. 10 MHz
    • C. 1 GHz
    • D. 10 GHz
      • Discuss
    • 9. A cycloconverter is a group of controlled rectifiers.

    • Options
    • A. True
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      • Discuss
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    • Options
    • A. 1
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