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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


  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


  5. LVDT windings are wound on

  6. A.

     Steel sheets

    B.

     Aluminium

    C.

     Ferrite

    D.

     Copper


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

  8. A.

     1000 O

    B.

     10 kΩ

    C.

     20 kΩ

    D.

     10 MO


  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


  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


  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


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

  16. A.

     Voltmeter

    B.

     Multimeter

    C.

     CRO

    D.

     VTVM


  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


  19. For biomedical applications the mostly used amplifier is

  20. A.

     Single ended amplifier

    B.

     Differential amplifier

    C.

     Inverting operational amplifier

    D.

     Chopper amplifier