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Measurement and Instrumentation

Measurement and Instrumentation
A 150 V moving iron voltmeter of accuracy class 1-0 reads 75 V when used in a circuit under standard condition. The maximum possible percentage error in the reading is

 2.5%
 1%
 2%
 1.5%

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Measurement and Instrumentation
The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is

 ± 6%
 ± 3%
 ± 4%
 ± 2.8%

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Measurement and Instrumentation
Basically potential meter is a device for

Comparing two voltages
Measuring a voltage
Comparing two currents
Measuring a current

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Measurement and Instrumentation
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are

400V and 200V
One of the meters out of the range and other 100V
360V and 240V
300V each

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Measurement and Instrumentation
The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

 R1 = 3R2.
 R1 = R2.
 R1 = R2/2.
 R1 = 2R2.

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Measurement and Instrumentation
An instrument to be used for measurement and control should preferably have

Linear output and fast response
Non-linear output
A highly damped response
Dead zone and dead time

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MORE MCQ ON Measurement and Instrumentation

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