MEASUREMENT AND INSTRUMENTATION QUIZ

In a ballistic galvanometer, the deflecting torque is proportional to

The current through coil

Square-root of current through coil

Sine of measured

Square of current through coil

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YOUR ANSWER : ?

A current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading?

4.06 A.

2.03 A.

6.09 A.

5 A.

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YOUR ANSWER : ?

Which of the quantity consists of unit as Pascal ?

Force

Temperature

Impulse

Pressure

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Which of the following devices should be used for accurate measurement of low D.C. voltage?

None of these

Small range moving coil voltmeter

Small range thermocouple voltmeter

C. potentiometer

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The internal resistance of Weston standard cell is of order of

10 ohm.

1 ohm.

1000 ohm.

100 ohm.

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When checked with an ohm meter an open resistor reads

zero.

low but not zero.

infinite.

high but within tolerance.

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In a megger controlling torque is provided by

Spring

Eddy current

Coil

Gravity

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A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

2.66 %.

2 %.

3.33 %.

1 %.

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Which of the following is a variable displacement transducer?

tachometer

potentiometer

synchros

None of these

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Which of the quantity consists of SI unit as Candela?

Force

Impulse

Velocity

Luminous intensity

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