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Measurement and Instrumentation

Measurement and Instrumentation
No eddy current and hysteresis losses occur in

Electrostatic instruments
PMMC instruments
Electrodynamo meter instruments
Moving iron instruments

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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

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

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Measurement and Instrumentation
______ movement is most expensive.

D'Arsonval movement
Moving iron
None of the listed here
Dynamometer

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Measurement and Instrumentation
Which of the quantity consists of unit as newton-second?

 velocity
 Speed
 Acceleration
 Impulse

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Measurement and Instrumentation
Which of the following meter is most suitable for measuring radio frequency currents?

 VTVM.
  Thermocouple meter.
 Moving - coil meter.
 Moving - iron meter.

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Measurement and Instrumentation
A galvanometer with a full scale current of 10 mA has a resistance of 1000 Ω. The multiplying power (the ratio of measured current to galvanometer current) of 100 Ω shunt with this galvanometer is

 10.
 11.
 100.
 110.

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