MEASUREMENT AND INSTRUMENTATION QUIZ

In a megger controlling torque is provided by

Gravity

Coil

Eddy current

Spring

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Comparison methods are used

because they are most simple.

because they are expensive.

when a high accuracy of measurement is required.

because they take least time in measurement.

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A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read

2.5 A

0 A

5 A

None of the listed here

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Which devices used to measure the temperature of an object ?

Galvanometer

Poteintiometer

Odometer

Thermometers

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The adjustment of position of shading bands, in an energy meter is done to provide

None of the listed here

Breaking torque

Friction compensation

Creep compensation

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A slide wire potentiometer has 10 wires of 1 m each. With the help of a standard voltage source of 1.018 V it is standardised by keeping the jockey at 101.8 cm. If the resistance of the potentiometer wires is 1000 ohm, then the value of the working current will be

10 mA.

1mA.

0.5 mA.

100 mA.

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The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

R1 = 2R2.

R1 = R2/2.

R1 = 3R2.

R1 = R2.

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In measurement system, the function of the signal manipulating elements is to

to perform linear operation like addition and multiplication.

change the magnitude of the input signal while retaining its identity.

to perform non liner operation like clipping filtering, chopping and clamping.

change the quantity under measurement to an analogues signal.

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Which of the following quantities consists of S.I. unit as Hertz?

Power

Force

Charge

Frequency

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If two meters X and Y require 40 mA and 50 mA respectively, to give full scale deflection, then

It would not be possible to assess the sensitivity on the basis of the given data.

Both X and Y are equally sensitive.

X is more sensitive.

Y is more sensitive.

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