MEASUREMENT AND INSTRUMENTATION QUIZ

Kelvin’s double bridge is used to measure low resistance because

effect of contact and lead resistance is eliminated.

resistance variation due to temperature.

it has high sensitivity.

there is no thermo electric emf.

TRUE ANSWER : ?
YOUR ANSWER : ?

Piezoelectric effect is carried out in

constant k prototype.

crystal filter.

composite filter.

m derived.

TRUE ANSWER : ?
YOUR ANSWER : ?

For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is

10.2%

25.2%

5.2%

1.2%

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following devices may be used for extending the range of instruments?

Shunt

Current transformers

All of the listed here

Potential transformers

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A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA?

25 mA.

80 mA.

50 mA.

40 mA.

TRUE ANSWER : ?
YOUR ANSWER : ?

To measure ac as well as dc power, we use

Induction wattmeter

Dynamometer wattmeter

Sometimes induction and sometimes dynamometer wattmeter

None of the listed here

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YOUR ANSWER : ?

The main advantage of Anderson bridge over Maxwell bridge is that

reduction of the cost.

attaining balance condition is easier.

balance equation independent of frequency.

measures high Q inductors.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the quantity consists of SI unit as Candela?

Velocity

Luminous intensity

Impulse

Force

TRUE ANSWER : ?
YOUR ANSWER : ?

The thermocouple instrument will measure

None of these

Current

Flux

Voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

The thermocouple instruments do not have

High degree of measuring accuracy

Absence of frequency error

Independence of ambient temperature

High sensitivity

TRUE ANSWER : ?
YOUR ANSWER : ?

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