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Measurement and Instrumentation

Measurement and Instrumentation
A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads

 (2 + √3/2)V.
 0 V.
 5 V.
 2 V.

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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?

 25 mA.
 80 mA.
 50 mA.
  40 mA.

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Measurement and Instrumentation
A first order instrument is characterized by

 Static sensitivity and time constant
 Static sensitivity and damping coefficient
 Static sensitivity, damping coefficient and natural frequency of oscillations
 Time constant only

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Measurement and Instrumentation
In eddy current damping, disc or former is made of a material that is a

Non conductor but magnetic
Non conductor and non magnetic
Conductor but non magnetic
Conductor but magnetic

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Measurement and Instrumentation
A thermo couple ammeter gives full scale deflection of 10 A, when it reads one fifth of the scale, the current will be

 4 A.
  4.47 A.
 2 A.
 5.78 A.

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Measurement and Instrumentation
A potentiometer may be used for

Measurrment of resistance
Calibration of ammeter
All of the listed here
Measurement of current

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