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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following meters has a linear scale?

Hot wore meter
Moving coil meter
Thermocouple meter
Moving iron meter

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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 ± 1) A
 (400 ±5) A
 (400 ± 3) A

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Measurement and Instrumentation
Which of the quantity consists of SI unit as Candela?

 Force
 Luminous intensity
 Impulse
 Velocity

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Measurement and Instrumentation
When the pointer of an indicating instrument comes to rest in the final deflected position, ______

Only deflecting torque acts
Only controlling torque acts
None of the listed here
Both deflecting and controlling torques act

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Measurement and Instrumentation
The function of shunt in an ammeter is to

None of the listed here
Increase the resistance of ammeter
Increase the sensitivity of the ammeter
By pass the current

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Measurement and Instrumentation
A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be

 500 Hz.
 250 Hz.
 625 Hz.
 400 Hz.

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