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Measurement and Instrumentation

Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 100 V.
 200 V.
 50 V.
 25 V.

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Measurement and Instrumentation
To increase Q factor of a coil, the wire should be

 long and thin.
 thin.
 thick.
 long.

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

Both DC and AC
Any of the listed here
AC only
DC only

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 3%
 4%
 1%
 2%

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Measurement and Instrumentation
An average reading digital multimeter reads 10 V when fed a triangular wave, symmetric about the axis. For the same input, an rms reading meter will read

 20.
  10√3.
 10.
 20√3.

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Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

One ohm according to SI units
One ohm according to working standards
One international ohm
Standard ohm

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MORE MCQ ON Measurement and Instrumentation

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