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Measurement and Instrumentation

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

Exponential scale
Logarithmic scale
Square-law scale
Linear scale

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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%
 ± 1.5%
 ± 3.0%

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Measurement and Instrumentation
When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is

 54.2.
 31.4.
 25.4.
 20.

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Measurement and Instrumentation
The adjustment of position of shading bands, in an energy meter is done to provide

Creep compensation
None of the listed here
Friction compensation
Breaking torque

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Measurement and Instrumentation
Moving iron instruments have _____ scale.

None of the listed here
Squared
Uniform
Log

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Measurement and Instrumentation
What is the name of physical quantities which are independent of each other?

None of these
 Derived quantity
 Fundamental quantity
 Numerical quantity

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