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Measurement and Instrumentation

Measurement and Instrumentation
In a CRO which of following is not a part of electron gun?

 Accelerating anode
 Grid
  X-Y plates
 Cathode

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Measurement and Instrumentation
Deflection method direct measurements are most widely used as these are

 least time consuming.
 most accurate.
 most simple.
 most simple and least time consuming.

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Moving iron voltmeter
Moving iron ammeter
Induction type ammeter
Permanent Magnet Type ammeter

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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?

 30o.
 105.6o.
 150o.
 63.25o.

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Measurement and Instrumentation
In a ballistic galvanometer, the deflecting torque is proportional to

Square of current through coil
Sine of measured
The current through coil
Square-root of current through coil

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Measurement and Instrumentation
A 0 - 250V voltmeter has a guaranteed accuracy of 2% of full scale reading. What is the percentage of error if it measures 150V?

 3.33%
 5%
 1%
 2%

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MORE MCQ ON Measurement and Instrumentation

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