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Measurement and Instrumentation

Measurement and Instrumentation
An Ohmmeter is a

Moving iron instrument
Moving coil instrument
Dynamometer instrument
None of the listed here

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Measurement and Instrumentation
The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?

 ±0.5%
 ±3.5%
 ± 3.0%
 ± 1.5%

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Measurement and Instrumentation
For measuring a very high resistance we should use

Wheat stone bridge
Kelvin's double bridge
Megger
None of the listed here

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Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

  10.6 V.
 11.1 V.
 15 V.
 12.6 V.

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Measurement and Instrumentation
In flux meter, the controlling torque is produced by

 not provided at all.
 weight attached to the moving coil.
 crossed coil mechanism.
 spring.

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

 velocity
 Acceleration
 Impulse
 Speed

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