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Measurement and Instrumentation

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.
  10√3.
 20√3.

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Measurement and Instrumentation
The adjustment of position of shading bands, in an energy meter is done to provide

Breaking torque
Creep compensation
Friction compensation
None of the listed here

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Measurement and Instrumentation
The power factor of a single phase load can be calculated if the instruments available are

One voltmeter, one ammeter and one wattmeter
Any of the listed here
One voltmeter and one ammeter
One ammeter, one voltmeter and one energy meter

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Measurement and Instrumentation
An oscilloscope indicates

Average value
DC value of voltage
Peak to peak value of voltage
RMS value

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Measurement and Instrumentation
Which meter is suitable for the measurement of 10mV at 50MHz?

Moving coil voltmeter
Moving iron voltmeter
VTVM
CRO

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Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1 V.
 1.7 V.
 1.34 V.
 1.5 V.

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