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Measurement and Instrumentation

Measurement and Instrumentation
The use of thermocouple meters for AC measurement leads to scale which is

 linear.
 logarithmic.
 square law.
 expontial.

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Measurement and Instrumentation
A high frequency AC signal is applied to a PMMC instrument. The RMS value of the AC signal is 2V, the reading of the instrument is

 Zero.
 2V.
 √2V.
 2√2V.

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Measurement and Instrumentation
To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

 sinisoidal.
  a circle.
 a straight line.
 an ellipse.

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Measurement and Instrumentation
The chemical effect of current is used in

C. ammeter hour meter
None of these
C. energy meter
C. ammeter

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

Copper
Aluminium
Silver
Soft steel

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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?

100W
150W
200W
50W

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