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EEE :: Electronics and Instrumentation

  1. Two multimeters A and B have sensitivities of 10 kΩ/V and 30 kΩ/V respectively. Then ___________.

  2. A.

     Multimeter A is more sensitive

    B.

     Multimeter B is more sensitive

    C.

     Both are equally sensitive

    D.

     None of the above


  3. A transducer that converts measurand into the form of pulse is called

  4. A.

     Active transducer

    B.

     Analog transducer

    C.

     Digital transducer

    D.

     Pulse transducer


  5. Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called

  6. A.

     Piezo-electric

    B.

     Photo-electric

    C.

     Thermo-electric

    D.

     Photo-resistive


  7. A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ___________

  8. A.

     GS/(G+S)

    B.

     G+S

    C.

     G-S

    D.

     None of the above


  9. The resistance of an ideal voltmeter is ___________

  10. A.

     Low

    B.

     Infinite

    C.

     Zero

    D.

     High


  11. Power gain in decibels is equal to voltage gain in decibels only when

  12. A.

     Input impedance is equal to output impedance

    B.

     Output impedance is zero

    C.

     Never

    D.

     Input impedance is zero


  13. In phase response of a recorder noise level ___________ with the band width of a system

  14. A.

     Increases

    B.

     Decreases

    C.

     Reaches unity

    D.

     Reaches infinity


  15. Duration of rotation of pen in the PMMC system depends upon ___________.

  16. A.

     Phase angle

    B.

     Frequency

    C.

     Magnitude

    D.

     Direction


  17. Pressure transducer for measuring blood pressure is

  18. A.

     Strain gauge transducer only

    B.

     Strain gauge or capacitive transducer

    C.

     Resistive transducer

    D.

     Fiber optic transducer


  19. For display of signal pattern ___________ voltage is applied to the horizontal plates of a CRO

  20. A.

     Sinusoidal

    B.

     Rectangular

    C.

     Sawtooth

    D.

     None of the above