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Measurement and Instrumentation

Measurement and Instrumentation
What are the SI units of mass, length and time respectively?

 kg, cm and s.
 g, m and s.
 g, cm and s.
 kg, m and s.

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Measurement and Instrumentation
The errors mainly caused by human mistakes are

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

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Measurement and Instrumentation
A bridge circuit is shown in the figure below. Which one of the sentence given below is most suitable for balancing the bridge?

 First adjust R4 and then adjust R1.
 First adjust R4 and then adjust R2.
 First adjust R2 and then adjust R3.
 First adjust R2 and then adjust R4.

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 2%
 4%
 3%
 1%

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Measurement and Instrumentation
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

 1.5%
 1%
 0.5%
 1.2%

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Measurement and Instrumentation
A galvanometer has

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

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