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Measurement and Instrumentation

Measurement and Instrumentation
A galvanometer has

Air friction damping
Eddy current damping
Spring coil damping
Fluid friction damping

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Measurement and Instrumentation
Jewels are used in instruments for the purpose of

Torque control
Suppressing noise
Damping
Bearing

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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?

 150o.
 63.25o.
 30o.
 105.6o.

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Measurement and Instrumentation
The thermocouple instruments do not have

High degree of measuring accuracy
Independence of ambient temperature
High sensitivity
Absence of frequency error

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Measurement and Instrumentation
The thermocouple instrument will measure

Current
Voltage
Flux
None of these

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Measurement and Instrumentation
PMMC type instruments normally use

Fluid friction damping
Air friction damping
Eddy current damping
None of these

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