Menu
Home / ECE / Measurements and Instrumentation :: Section 5

ECE :: Measurements and Instrumentation

Measurements and Instrumentation - Section 1
Measurements and Instrumentation - Section 2
Measurements and Instrumentation - Section 3
Measurements and Instrumentation - Section 4
Measurements and Instrumentation - Section 5
Measurements and Instrumentation - Section 6
Measurements and Instrumentation - Section 7
Measurements and Instrumentation - Section 8
Measurements and Instrumentation - Section 9
Measurements and Instrumentation - Section 10
Measurements and Instrumentation - section-11
Measurements and Instrumentation - Section-12

  1. Assertion (A): Double Kelvin's bridge is used to measure low resistances.

    Reason (R): In low resistance, the contact and lead resistances are very important.

    2. A.
    Both A and R are true and R is correct explanation of A
    B.
    Both A and R are true but R is not correct explanation of A
    C.
    A is true R is false
    D.
    A is false R is true

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Shaft encoder is used to measure

    3. A.
    angular position
    B.
    linear position
    C.
    linear velocity
    D.
    linear acceleration

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Assertion (A): Hay's bridge in particularly suitable for measuring inductance having a comparatively low resistance.

    Reason (R): In Hay's bridge the value of frequency supply must be known.

    4. A.
    Both A and R are true and R is correct explanation of A
    B.
    Both A and R are true but R is not correct explanation of A
    C.
    A is true R is false
    D.
    A is false R is true

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. The device having highest photo sensitivity is

    5. A.
    photoconductive cell
    B.
    photovoltaic cell
    C.
    photodiode
    D.
    phototransistor

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. Which of the following closely represents the resistance-temperature characteristics of thermistor?

    6. A.
    RT = a R0 eb/t
    B.
    RT = a R0 E-b/t
    C.
    RT = - a R0 e-b/t
    D.
    RT = - R0 eb/t

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. For use at 50 Hz the range of scale of vibrating reed frequency meter is

    7. A.
    25 - 75 Hz
    B.
    40 - 60 Hz
    C.
    47 - 53 Hz
    D.
    42 - 58 Hz

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. Consider the following statements about a moving iron instrument

    1. It is an unpolarised instrument.
    2. It has permanent magnet.
    3. It has a fixed coil.
    4. It has two iron vanes.
    Of these statements

    8. A.
    1, 2, 3 are correct
    B.
    1, 2, 4 are correct
    C.
    1, 3 and 4 are correct
    D.
    2, 3, 4 are correct

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. The two pressure coils in a single phase power factor meter of turns

    9. A.
    the same dimension and the same numbers of turns
    B.
    the same dimension but different number of turns
    C.
    different dimension and different numbers of turns
    D.
    different dimension but the same numbers of turns

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. Piezoelectric effect can be used to measure

    10. A.
    force
    B.
    strain
    C.
    acceleration
    D.
    all of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. A current of 3.18 A is flowing through resistance of 35.68 Ω. The voltage drop across resistance to the appropriate number of significant figures is

    11. A.
    113.4624 V
    B.
    113.462 V
    C.
    113.46 V
    D.
    113 V

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers