MEASUREMENT AND INSTRUMENTATION QUIZ

An induction meter can handle current upto

30 A

100 A

60 A

10 A

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If the instrument is to have a wide range, the instrument should have

Exponential scale

Linear scale

Square-law scale

Logarithmic scale

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When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is

All right

None of these

Faulty

Short-circuited

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Which one of the following meters has maximum loading effect on the circuit under measurement ?

100 Ω/volt

1 MΩ/volt

10 MΩ/volt

1000 Ω/volt

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Basically potential meter is a device for

Measuring a voltage

Comparing two voltages

Measuring a current

Comparing two currents

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The high torque to weight ratio in an analog indicating instrument indicates

high friction loss.

none of these.

nothing related to friction loss.

low friction loss.

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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.

100 Nm.

200 Nm.

1 Nm.

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What is the name of physical quantities which are independent of each other?

Fundamental quantity

Numerical quantity

None of these

Derived quantity

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A DC potentiometer is the best means available for the measurement of DC voltage because

It is possible to standardize before a measurement is undertaken.

It is based on null balance technique.

The precision in measurment is independent of the type of the defector used.

None of above.

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A PMMC instrument can be used as flux meter

By eliminating the control springs

By making control springs of large moment of inertia

By using a low resistance shunt

By using a high series resistance

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