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Measurement and Instrumentation

Measurement and Instrumentation
In a moving coil instrument, the deflecting torque is proportional to

Sine of the measurand
Square of the current
Current
Squareroot of the current

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Measurement and Instrumentation
______ movement is most expensive.

Dynamometer
D'Arsonval movement
Moving iron
None of the listed here

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Measurement and Instrumentation
The difference between the indicated value and the true value of a quantity is

 Dynamic error
 Absolute error
 Relative error
 Gross error

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Measurement and Instrumentation
Which of the two have same dimensions?

None of these
 Force and stress
 Force and strain
 Angular velocity and angular frequency

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Measurement and Instrumentation
A thermometer having first order dynamics is subjected to a sudden temperature change of 30oc to 150oc. If it has he time constant of 5 sec, what temperature will be indicated by after 5 sec?

 105.6o.
 30o.
 63.25o.
 150o.

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Measurement and Instrumentation
The moving coil-meters, damping is provided by

 eddy current disk.
 damping vane in the airtight chamber.
 the coil spring attached to the moving.
 the aluminium frame of the coil.

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