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Measurement and Instrumentation

Measurement and Instrumentation
Unit of deflection sensitivity of a CRO is

 meter / volt.
 V / mm.
 mm per mV.
 mm / V.

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Measurement and Instrumentation
The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is

 3%
 4%
 2%
 1%

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Measurement and Instrumentation
A galvanometer has

Spring coil damping
Air friction damping
Fluid friction damping
Eddy current damping

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Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 1 µNm.
 100 µNm.
  200 µNm.
 2 µNm.

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Measurement and Instrumentation
The moving coil-meters, damping is provided by

 eddy current disk.
 damping vane in the airtight chamber.
 the coil spring attached to the moving.
 the aluminium frame of the coil.

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Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 100 V.
 50 V.
 25 V.
 200 V.

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MORE MCQ ON Measurement and Instrumentation

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