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Measurement and Instrumentation

Measurement and Instrumentation
In which of the transformer is the secondary nearly short circuited under normal operating condition?

 Distribution transformer.
 PT.
 CT.
 Power transformer.

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Measurement and Instrumentation
Piezoelectronic accelerometer

 Should be used for low frequency.
 Should be used for high frequencies above 100 Hz.
 Should use a monitoring source at low input impedance.
 Has a low natural frequency.

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Measurement and Instrumentation
Symmetric errors are

All of the listed here
Observational errors
Instrument errors
Environment errors

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

Moving iron
Hot wire
PMMC
Electrostatic

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Measurement and Instrumentation
The absolute measurement of resistance is done by

Bridge Method
Lorenz method
Ohm’s law method
Rayleigh method

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Measurement and Instrumentation
Standard resistor ia made from

Silver
Platinum
Manganin
Nichrome

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