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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

 25.2%
 1.2%
 5.2%
 10.2%

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Measurement and Instrumentation
Which of the quantity consists of unit as Pascal ?

 Temperature
 Force
 Pressure
 Impulse

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Measurement and Instrumentation
The disc of an instrument using eddy current damping should be of

None of the listed here
Non conducting and magnetic material
Conducting and magnetic material
Conducting and non magnetic material

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3750 rev/KWh.
 960 rev/KWh.
 3600 rev/KWh.
 1000 rev/KWh.

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Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because

The ohmmeter has its own internal battery
Current will decrease resistance
None of these
Voltage source will increase resistance

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as

 (400 ± 2.24) A
 (400 ± 3) A
 (400 ± 1) A
 (400 ±5) A

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