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EEE :: Electronics and Instrumentation

  1. If the full-scale deflection current of a multimeter is 50 µA, its sensitivity is

  2. A.

     10 kΩ/V

    B.

     100 kΩ/V

    C.

     50 kΩ/V

    D.

     20 kΩ/V


  3. Which of the following is likely to have the largest resistance?

  4. A.

     Voltmeter of range 10 V

    B.

     Moving coil galvanometer

    C.

     Ammeter of range 1 A

    D.

     A copper wire of length 1 m and diameter 3 mm


  5. A VTVM is never used to measure ___________.

  6. A.

     Voltage

    B.

     Current

    C.

     Resistance

    D.

     None of the above


  7. A CRO is used to measure ___________.

  8. A.

     Voltage

    B.

     Frequency

    C.

     Phase

    D.

     All of above


  9. In foil strain gauge the thickness of foil varies from

  10. A.

     2.5 micron to 6 micron

    B.

     25 micron (or) less

    C.

     25 micron to 60 micron

    D.

     2.5 micron to 5 micron


  11. If the negative potential on the control grid of CRT is increased, the intensity of spot ___________.

  12. A.

     Is increased

    B.

     Is decreased

    C.

     Remains the same

    D.

     None of the above


  13. Isolation amplifier actually operates on the principle of

  14. A.

     Filtering

    B.

     Attenuation

    C.

     Clipping

    D.

     Amplification


  15. Storage oscilloscope operates on the principle of

  16. A.

     Primary emission

    B.

     Deflection

    C.

     Secondary emission

    D.

     Diffusion


  17. The principle of operation of LVDT is based on the variation of

  18. A.

     Self inductance

    B.

     Mutual inductance

    C.

     Reluctance

    D.

     Permanence


  19. _____________ is the example of photo emissive cell

  20. A.

     LDR

    B.

     Photo diode

    C.

     Photo transistor

    D.

     Photo multiplier