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Measurement and Instrumentation

Measurement and Instrumentation
For measurement of high direct voltage, one would use _____ voltmeter.

Electrostatic
PMMC
Moving iron
Hot wire

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Measurement and Instrumentation
The scale of hot wire ammeter is

  Non Linear.
 Absloute linear.
 Linear.
 Cramped.

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Measurement and Instrumentation
A set of independent current measurements taken by four observers was recorded as : 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error ?

 ± 0.054
 ± 0.045
 ± 0.065
 ± 0.056

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Measurement and Instrumentation
The repeat accuracy of an instrument can be judged from its

Static error
Standard deviation of error
Linearity error
Dynamic error

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Measurement and Instrumentation
The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is

1 kWh
2 kWh
3 kWh
4 kWh

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Measurement and Instrumentation
An ammeter is a

Integrating instrument
Secondary instrument
Absolute instrument
Recording instrument

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