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EEE :: Electronics and Instrumentation

  1. CMRR is more in __________

  2. A.

     Single ended amplifier

    B.

     Differential amplifier

    C.

     Inverting operational amplifier

    D.

     Chopper amplifier


  3. If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be

  4. A.

     X/Y

    B.

     X*Y

    C.

     X+Y

    D.

     X-Y


  5. S1: Transducer is a device which converts physical into electrical quantity
    S2: Transducer is also called as sensor.

  6. A.

     S1 is true & S2 is false

    B.

     S2 is true & S1 is false

    C.

     Both S1 & S2 are true

    D.

     Both S1 & S2 are false


  7. The principle of operation of variable resistance transducer is

  8. A.

     Deformation leads to change in resistance

    B.

     Displacement of a contact slider on a resistance

    C.

     Coupling of two coils changes with displacement

    D.

     Movement of magnetic field produces variation in resistance of material


  9. Resistively generated inference arises through incorrect __________________.

  10. A.

     Grounding

    B.

     Current density at the electrodes

    C.

     Supply voltage

    D.

     Input impedance


  11. An ammeter is connected in ___________ with the circuit element whose current we wish to measure

  12. A.

     Series

    B.

     Parallel

    C.

     Series or parallel

    D.

     None of the above


  13. If a multimeter has a sensitivity of 1000 Ω per volt and reads 50 V full scale, its internal resistance is ___________

  14. A.

     20 kΩ

    B.

     50 kΩ

    C.

     10 kΩ

    D.

     None of the above


  15. A VTVM has ___________ input resistance than that of a multimeter

  16. A.

     More

    B.

     Less

    C.

     Same

    D.

     None of the above


  17. Piezo-electric transducers are

  18. A.

     Passive transducers

    B.

     Inverse transducers

    C.

     Digital transducers

    D.

     Pulse transducers


  19. Photo conductive cell consists of a thin film of

  20. A.

     Quartz

    B.

     Lithium sulphate

    C.

     Barium titanate

    D.

     Selenium