Measurement and Instrumentation Multiple Choice Questions

Measurement and Instrumentation

Question 1.

One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land?

A.

 1

B.

 0.84

C.

 0.73

D.

 0.65

Explanation :

Explanation Not Provided

Question 2.

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

A.

 Should be nonmagnetic

B.

 Most be of low temperature coefficient

C.

 Should have low specific resistance

D.

 All of the above

Explanation :

Explanation Not Provided

Question 3.

Why is a MISC meter not recommended for DC measurement?

A.

 The meter is calibrated for AC and it’s error for DC would be high

B.

 The meter does not respond to DC signals

C.

 The error is high due to hysteresis effect

D.

 The error is high due to eddy current effect

Explanation :

Explanation Not Provided

Question 4.

A moving iron ammeter may be compensated for frequency errors by

A.

 A shunt resistance

B.

 A series inductance

C.

 Shunt capacitance

D.

 Series resistance

Explanation :

Explanation Not Provided

Question 5.

Which of the following meters has a linear scale?

A.

 Thermocouple meter

B.

 Moving iron meter

C.

 Hot wore meter

D.

 Moving coil meter

Explanation :

Explanation Not Provided

Topics

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