BEE FREE Bachelor of Electrical Engineering Measurement and Instrumentation Questions and Answers 2

Question 1

What is the primary advantage of a digital multimeter over an analog multimeter?

Accepted Answer

Higher input impedance and better accuracy

Answer

Lower cost and simpler construction

Answer

Faster response time for transient signals

Answer

Ability to measure only AC quantities

Question 2

In a Wheatstone bridge circuit at balance condition, what is the current through the galvanometer?

Accepted Answer

Zero

Answer

Maximum

Answer

Equal to supply current

Answer

Half of supply current

Question 3

Which type of error is caused by incorrect reading of an instrument's scale by the observer?

Accepted Answer

Parallax error

Answer

Systematic error

Answer

Random error

Answer

Instrumental error

Question 4

A LVDT (Linear Variable Differential Transformer) is used to measure which physical quantity?

Accepted Answer

Linear displacement

Answer

Temperature

Answer

Pressure

Answer

Angular velocity

Question 5

What does the resolution of a measuring instrument refer to?

Accepted Answer

The smallest change in input it can detect

Answer

The maximum value it can measure

Answer

The difference between measured and true value

Answer

The range over which it maintains accuracy

Question 6

Which instrument is most suitable for measuring very high resistances in the megaohm range?

Accepted Answer

Megger (insulation resistance tester)

Answer

Kelvin double bridge

Answer

Wheatstone bridge

Answer

Ammeter-voltmeter method