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Measurement and Instrumentation

Measurement and Instrumentation
To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to

 ± 7.5 %
 ± 20%
 ± 1.5%
 ± 2.5%

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Measurement and Instrumentation
______ movement is most expensive.

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

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Measurement and Instrumentation
PMMC Instrument can be used for

Both AC and DC
None of the listed here
DC work only
AC work only

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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 aluminium frame of the coil.
 the coil spring attached to the moving.

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3750 rev/KWh.
 3600 rev/KWh.
 1000 rev/KWh.
 960 rev/KWh.

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Measurement and Instrumentation
To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

  a circle.
 a straight line.
 sinisoidal.
 an ellipse.

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MORE MCQ ON Measurement and Instrumentation

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