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Measurement and Instrumentation

Measurement and Instrumentation
For measurement on high voltage capacitors, the suitable bridge is

Modified De santy's bridge
Wein bridge
Any of the listed here
Schering bridge

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Measurement and Instrumentation
Which of the following essential featuresis possessed by an indicating instrument?

Damping device
Deflecting device
All of the listed here
Controlling device

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Measurement and Instrumentation
The limiting errors of measurement of power consumed by and the current passing through a resistance are ±1.5% and ±1% respectively. What is the limiting error ( in %) of measurement of resistance ?

 ± 1%
 ± 2.5%
 ±3.5%
 ± 1.5%

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Measurement and Instrumentation
In a moving iron meter, the deflecting torque is proportional to

Sine of the measurand
Square of the current through the coil
Current through the coil
Squareroot of the measurand

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Measurement and Instrumentation
The form factor in AC is the ratio of

Rms value to peak value
Peak value to rms value
Rms value to average value
Peak value to average value

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

 + 597 W.
  - 597 W.
 - 795 W.
 + 795 W.

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