MEASUREMENT AND INSTRUMENTATION QUIZ

A 1 mA meter is to be converted to 1 A ammeter. The meter resistance is 100 Ω. The value of shunt resistance

100 Ω.

0.001 Ω.

0.1001 Ω.

1000 Ω.

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Charge

Frequency

Force

Power

TRUE ANSWER : ?
YOUR ANSWER : ?

In a moving iron meter, the deflecting torque is proportional to

Squareroot of the measurand

Current through the coil

Square of the current through the coil

Sine of the measurand

TRUE ANSWER : ?
YOUR ANSWER : ?

Systematic errors are

All of these

instrument errors.

observational errors.

environmental errors.

TRUE ANSWER : ?
YOUR ANSWER : ?

The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are

parallel.

perpendicular.

inclined at 60o.

inclined at 30o.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the quantity consists of unit as newton-second?

velocity

Acceleration

Speed

Impulse

TRUE ANSWER : ?
YOUR ANSWER : ?

Ampere is one of the

Base units

Supplementary units

Units used to measure charge

Derived units

TRUE ANSWER : ?
YOUR ANSWER : ?

PMMC type instruments normally use

Eddy current damping

None of these

Air friction damping

Fluid friction damping

TRUE ANSWER : ?
YOUR ANSWER : ?

The spring material used in a spring control device should have the following property.

All of the listed here

Most be of low temperature co-efficient

Should non magnetic

Should have low specific resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.

1 is false but 2 is true.

Both 1 and 2 are false.

Both 1 and 2 are true.

1 is true but 2 is false.

TRUE ANSWER : ?
YOUR ANSWER : ?

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