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Measurement and Instrumentation

Measurement and Instrumentation
PMMC Instrument can be used for

DC work only
Both AC and DC
AC work only
None of the listed here

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Measurement and Instrumentation
In a portable instrument , the controlling torque is provided by

Spring
Eddy currents
Gravity
All of the listed here

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Measurement and Instrumentation
Induction wattmeter can measure

Dc power only
None of the listed here
Both AC and DC
Ac power only

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Measurement and Instrumentation
A moving iron ammeter produces a full scale torque of 240 μNm with a deflection of 120° at a current of 10 A. The rate of change of self induction (μH/radian) of the instrument at full scale is

 114.6 μH/radian.
 12.0 μH/radian.
 2.0 μH/radian.
 4.8 μH/radian.

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

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

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Measurement and Instrumentation
A ______ device prevents the oscillation of the moving statem and enables the latter to reach its final position quickly

Controlling
Damping
Deflecting
None of the listed here

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MORE MCQ ON Measurement and Instrumentation

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