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Measurement and Instrumentation

Measurement and Instrumentation
For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is

 5.2%
 1.2%
 25.2%
 10.2%

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Measurement and Instrumentation
PMMC type instruments normally use

Fluid friction damping
None of these
Eddy current damping
Air friction damping

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

Eddy currents
Spring
All of the listed here
Gravity

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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 postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 2 Nm.
  200 Nm.
 100 Nm.
 1 Nm.

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Measurement and Instrumentation
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken

From a battery
From a source which is not the same as the unknown voltage
From the same source as the unknown voltage
Any of the above

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Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 100 MΩ
 1 MΩ
 0
 10 MΩ

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MORE MCQ ON Measurement and Instrumentation

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