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Measurement and Instrumentation

Measurement and Instrumentation
The dynamometer principle can be used for

 wattmeter only.
 voltmeter only.
 ammeter only.
 ammeter, voltmeter and wattmeter.

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Measurement and Instrumentation
An electric pyrometer is an instrument used to measure

High temperatures
None of the listed here
Phase
Frequency

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Measurement and Instrumentation
The errors mainly caused by human mistakes are

 instrumental error.
 observational error.
  gross error.
 systematic error.

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Measurement and Instrumentation
The pointer of an indicating instrument is generally made of _______

Soft steel
Copper
Aluminium
Silver

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Measurement and Instrumentation
A galvanometer has

Spring coil damping
Eddy current damping
Air friction damping
Fluid friction damping

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

200W
50W
150W
100W

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