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Measurement and Instrumentation

Measurement and Instrumentation
Which meter is suitable for the measurement of 10mV at 50MHz?

Moving coil voltmeter
CRO
Moving iron voltmeter
VTVM

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Measurement and Instrumentation
A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is

 85.4o.
 94.6o.
 175.4o.
  4.6o.

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured as I1 = 150 ± 1A , I2 = 250 ± 2A, where the limits of error are as standard deviations. I is measured as

 (400 ± 1) A
 (400 ± 2.24) A
 (400 ± 1.5) A
 (400 ± 3) A

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Measurement and Instrumentation
Which of the quantity consists of unit as kg m/sec ?

 Acceleration
 Speed
 Momentum
 Impulse

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Measurement and Instrumentation
A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

 3.33 %.
  2.66 %.
 1 %.
 2 %.

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

Square-law scale
Linear scale
Logarithmic scale
Exponential scale

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