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EEE :: Electronics and Instrumentation

  1. The _________ of a recording system is the magnitude of input voltage required to produce a standard deflection in a recorded trace.

  2. A.

     Accuracy

    B.

     Linearity

    C.

     Sensitivity

    D.

     Resolution

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  3. Pre amplifier isolation in ECG circuit is to

  4. A.

     Increase input impedance

    B.

     Decrease input impedance

    C.

     Increase output impedance

    D.

     Decrease output impedance

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  5. LVDT windings are wound on

  6. A.

     Steel sheets

    B.

     Aluminium

    C.

     Ferrite

    D.

     Copper

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  7. The input resistance of a VTVM is about ___________.

  8. A.

     1000 O

    B.

     10 kΩ

    C.

     20 kΩ

    D.

     10 MO

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  9. When a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called __________.

  10. A.

     Input amplification

    B.

     Input differentiation

    C.

     Common mode rejection

    D.

     Input isolation

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  11. Piezo electric crystal can produce an emf

  12. A.

     When external mechanical force is applied to i

    B.

     When radiant energy stimulates the crystal

    C.

     When external magnetic field is applied

    D.

     When the junction of two such crystals are heated

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  13. A strain gauge is a passive transducer and is employed for converting.

  14. A.

     Mechanical displacement into a change of resistance

    B.

     Pressure into a change of resistance

    C.

     Force into a displacement

    D.

     Pressure into displacement

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  15. The most accurate device for measuring voltage is ___________.

  16. A.

     Voltmeter

    B.

     Multimeter

    C.

     CRO

    D.

     VTVM

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  17. Photo multiplier consists of

  18. A.

     1 Photo emissive cathode & 2 dynodes

    B.

     2 Photo emissive cathodes & 2 dynodes

    C.

     2 Photo emissive cathodes & 1 dynode

    D.

     1 Photo emissive cathode & 1 dynode

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  19. For biomedical applications the mostly used amplifier is

  20. A.

     Single ended amplifier

    B.

     Differential amplifier

    C.

     Inverting operational amplifier

    D.

     Chopper amplifier

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