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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. Magnetic flux can be measured by

    2. A.
    capacitive pick up
    B.
    inductive pick up
    C.
    resistive pick up
    D.
    hall effect pick up

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  2. The damping ratio, in D'Arsonval galvanometer is equal to

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  3. Panel type instruments are used in

    4. A.
    power stations
    B.
    automobiles
    C.
    industries
    D.
    all of the above

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  4. Which of the following can be used for measuring capacitance?

    5. A.
    De sauty bridge
    B.
    Maxwell's bridge
    C.
    Anderson bridge
    D.
    Hay's bridge

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  5. Assertion (A): In a CRT, grid is kept at negative potential with respect to cathode.

    Reason (R): The function of grid in an electronic tube is to control the number of electrons.

    6. 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

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  6. For measuring current at a high frequency we should use

    7. A.
    moving iron instrument
    B.
    electrostatic instrument
    C.
    thermocouple instrument
    D.
    moving coil instrument

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  7. A moving iron instrument can be used for dc as well as ac.

    8. A.
    True
    B.
    False

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  8. Two wattmeter method of 3-phase power measurement can be used to find

    9. A.
    total active power
    B.
    total active power and power factor
    C.
    total active power and reactive power
    D.
    total active power, power factor, apparent power, and reactive power

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  9. The multiplier resistance and meter coil in a voltmeter are in

    10. A.
    series
    B.
    parallel
    C.
    series-parallel
    D.
    either (a) or (b)

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  10. The adjustment of position of shading bands, in an energy meter, is done to provide

    11. A.
    friction compensation
    B.
    creep compensation
    C.
    braking torque
    D.
    none of the above

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