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Home ‣ Electronics and Communication Engineering ‣ Materials and Components Comments
  • Question

  • In carbon resistor colour code, if the third band is of silver, it indicates


  • Options
  • A. that three zeros are to be added to indicate the resistance value
  • B. multiplier is 0.01
  • C. multiplier is 0.1
  • D. tolerance is ± 5%

  • Correct Answer
  • multiplier is 0.01 

    • Materials and Components problems

    Search Results

    • 1. To produce magnetic flux, mmf is necessary.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The orientation polarization is

      1. directly proportional to temperature
      2. inversely proportional to temperature
      3. inversely proportional to square of permanent dipole moment
      4. directly proportional to square of permanent dipole moment.
      Which of the above are correct?

    • Options
    • A. 1 and 3 only
    • B. 2 and 3 only
    • C. 1 and 4 only
    • D. 2 and 4 only
      • Discuss
    • 3. The colour code on a carbon resistor is red-red-black-silver. The value of resistor is

    • Options
    • A. 22000 ?
    • B. 2200 ?
    • C. 22 ± 5% ?
    • D. 22 ± 10% ?
      • Discuss
    • 4. If v is the velocity of electron, tc is the average time between collisions, the mean free path ? = vtc.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. An iron specimen has µr = 1000 when B = 0.3 T. If B = 0.35 T, µr

    • Options
    • A. will be 1000
    • B. will be less than 1000
    • C. will be more than 1000
    • D. may be more or less than 1000
      • Discuss
    • 6. Assertion (A): Ferromagnetic materials possess ferromagnetic properties only when temperature is less than paramagnetic curie temperature.

      Reason (R): For a ferromagnetic material for T > ?f.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
      • Discuss
    • 7. A liquid has N permanent dipoles ?p per unit volume and has been subjected to dc field for a long time such that orientation polarization is P0. At t = 0, the field is suddenly removed, then polarization

    • Options
    • A. will remain constant at P0
    • B. will become zero at t = 0
    • C. will delay to zero with a time constant
    • D. either b or c
      • Discuss
    • 8. The temperature coefficient of a thermistor

    • Options
    • A. is positive
    • B. is negative
    • C. zero
    • D. may be positive or negative depending on its composition
      • Discuss
    • 9. In a rare gas, the molecules of some atoms have an excess positive or negative charge. The electric field tends to shift positive ions relative to negative ions. This is known as ionic polarization.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. As per Bohr's postulate, only those circular orbits are stable for which the angular momentum is equal to an integer times .

    • Options
    • A. True
    • B. False
      • Discuss

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