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Measurement and Instrumentation

Measurement and Instrumentation
Direct method is used to measure

Pressure
Length
Temperature
Voltage

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Measurement and Instrumentation
An ammeter of range 0-25 A has a guaranteed accuracy of 1% of full-scale reading. The current measured by the ammeter is 5 A. The limiting error in the reading is

 5%
 3%
 6%
 4%

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Measurement and Instrumentation
Which of the quantity consists of SI unit as Candela?

 Velocity
 Impulse
 Luminous intensity
 Force

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Measurement and Instrumentation
For handling greater currents induction watt-meters are used in conjunction with

Power transformers
Potential transformers
Either of the above
Current transformers

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Measurement and Instrumentation
A potentiometer may be used for

Measurement of current
Calibration of ammeter
Measurrment of resistance
All of the listed here

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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 %
 ± 1.5%
 ± 20%
 ± 2.5%

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