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Measurement and Instrumentation

Measurement and Instrumentation
A potentiometer may be used for

All of the listed here
Measurement of current
Measurrment of resistance
Calibration of ammeter

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Measurement and Instrumentation
If the instrument is to have a wide range, the instrument should have

Linear scale
Exponential scale
Logarithmic scale
Square-law scale

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Measurement and Instrumentation
The absolute measurement of resistance is done by

Rayleigh method
Lorenz method
Ohm’s law method
Bridge Method

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Measurement and Instrumentation
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be

 250 V.
 248 V.
 260 V.
 252 V.

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

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

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Measurement and Instrumentation
The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is

1 kWh
2 kWh
3 kWh
4 kWh

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MORE MCQ ON Measurement and Instrumentation

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