Measurements & Instrumentation MCQ ECE Questions Answers

Electronics & Instrumentation MCQ Questions Answers – Electronics Engineering (ECE)

In the ever-evolving field of Electrical and Computer Engineering (ECE), Measurements & Instrumentation play a pivotal role in ensuring accurate and reliable data acquisition, analysis, and control of various systems. To excel in this domain, it is essential to have a firm grasp of the fundamental concepts, principles, and techniques. This article delves into a curated selection of multiple-choice questions (MCQs) related to Measurements & Instrumentation in ECE, along with detailed answers, aiming to provide a comprehensive resource for students and enthusiasts alike.


1) Loading effect is primarily caused by instruments having

a) high resistance

b) high sensitivity

c) low sensitivity

d) high range

View Answer
Option – c)

2)  The error of an instrument is normally given as a percentage of
A. measured value
B. full-scale value
C. mean value
D. rms value

View Answer
Option – b)

3) A 1/3 digit voltmeter having a resolution of 100Mv can be used to measure maximum voltage of

a) 100 V

b) 200 V

c) 1000 V

d) 5000 V

View Answer
Option – a)

4) A multi-ammeter can be used as
A. Voltmeter and ammeter
B. Wattmeter
C. Ohmmeter
D. Frequency meter

View Answer
Option – a)

5) Load cell employ

a) piezoelectric crystal

b) capacitor

c) mutual inductance

d) strain gauges

View Answer
Option – d)

6) The difference between the measured value and the true value is called

a) gross error

b) relative error

c) probable error

d) absolute error

View Answer
Option – d)

7) Which meter is suitable for the measurement of 10mV at 50MHz?
A. Moving iron voltmeter
B. VTVM
C. Moving coil voltmeter
D. CRO

View Answer
Option – d)

8) The device possessing the highest photosensitivity is a

a) photoconductive cell

b) photovoltaic cell

c) photodiode

d) phototransistor

View Answer
Option – d)

9) Magnetic flux can be measured by

a) capacitive pick-up

b) inductive pick-up

c)b resistive pick-up

d) Hall-effect pick-up

View Answer
Option – d)

10) Direct method is used to measure
A. Length
B. Temperature
C. Pressure
D. Voltage

View Answer
Option – a)