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Measurement and Instrumentation

Measurement and Instrumentation
The rectifier instrument is not free from

Temperature error
All of the listed here
Wave shape error
Frequency error

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Measurement and Instrumentation
A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of

 All of above.
 Contact resistance.
 Thermoelectric emfs.
 Resistance of connecting leads.

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Measurement and Instrumentation
Dynamic errors are caused by

 instrument not responding fast
 observational error
 human error
 environmental error

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Measurement and Instrumentation
If the instrument is to have a wide range, the instrument should have

Logarithmic scale
Linear scale
Square-law scale
Exponential scale

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Measurement and Instrumentation
What is the expression for momentum?

 change of velocity / time
 mass × acceleration
 mass × velocity
 force × displacement

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Measurement and Instrumentation
A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA?

 50 mA.
  40 mA.
 25 mA.
 80 mA.

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MORE MCQ ON Measurement and Instrumentation

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