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

Digital multimeters offer higher input impedance (typically 10 MΩ or more) and superior accuracy compared to analog meters, reducing loading effects on the circuit under test.

Question 2

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

Accepted Answer

Zero

Answer

At balance, the potential difference across the galvanometer is zero, so no current flows through it.

Question 3

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

Accepted Answer

Parallax error

Answer

Parallax error occurs when the observer's line of sight is not perpendicular to the instrument scale, causing incorrect readings.

Question 4

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

Accepted Answer

Linear displacement

Answer

An LVDT converts linear displacement of its core into a proportional electrical voltage output through electromagnetic induction.

Question 5

What does the resolution of a measuring instrument refer to?

Accepted Answer

The smallest change in input it can detect

Answer

Resolution is the smallest incremental change in the measured quantity that the instrument can detect or distinguish.

BEE - Bachelor of Electrical Engineering Practice Test

BEE - Bachelor of Electrical Engineering Practice Test

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