Electrical Measurement and Electronic Instruments | EveryEng

Skip to main content

Self-paced Advanced

Electrical Measurement and Electronic Instruments

3(115)

132 views

FREE

1082 min

Anytime

English

132 views

Engineering AcademyLearn Without Limits: Free Engineering Courses

Electrical Engineering

Lifetime access
Certificate of completion
Anytime Learning
Learn from Industry Expert

Volume pricing for groups of 5+

Why enroll

Participants join this course because it helps them understand how electrical and electronic quantities are measured in real life, which is a basic and essential skill for every electrical engineer. It also builds strong fundamentals for GATE EE preparation, improves lab and industry readiness, and makes it easier to understand and use common measuring instruments used in power systems, electronics, and testing.

Your instructor

Engineering Academy

Engineer

Learn Without Limits: Free Engineering Courses

5+ yrs experience·India

Is this course for you?

You should take this if

You work in Automotive
You're a Electrical Engineering professional
You have 3+ years of hands-on experience in this field
You want to build skills in Engineering & Design, Project Management

You should skip if

You're new to this field with no prior experience
You need a different specialisation outside Electrical Engineering
You need live interaction with an instructor

Course details

This is a core subject for all undergraduate Electrical Engineering students, and its syllabus is fully aligned with the GATE EE examination.You will learn how common electrical measuring instruments work and how they respond to changing signals. This includes basic instruments like ammeters, voltmeters, ohmmeters, wattmeters, and energy meters. The course also covers methods for measuring resistance and impedance, different types of bridges and potentiometers, and the use of instrument transformers.This part focuses on modern electronic measurement systems. You will study differential amplifiers and operational amplifier (op-amp) circuits, analog DC and AC instruments, analog-to-digital and digital-to-analog converters (ADC and DAC), digital measuring instruments, and commonly used lab equipment such as function generators and oscilloscopes.

Source:
NPTEL – IIT Kharagpur [Youtube channel]

Course suitable for

Key topics covered

Introduction to electrical measurement systems and their importance.
Classification and characteristics of measuring instruments.
Basic principles of measurement and measurement errors.
PMMC (Permanent Magnet Moving Coil) instrument operation.
Electrodynamic instruments and moving iron instruments.
Ammeter design and behavior in measurement circuits.
Voltmeter characteristics and measurement techniques.
Wattmeter construction and application for power measurement.
Energy meters and their operation for energy consumption.
Instrument transformers (CT and PT) and safety aspects.
Bridge circuits (Wheatstone, Maxwell, etc.) for resistance measurement.
Potentiometer methods for accurate voltage and resistance testing.
Error analysis and uncertainty calculation in measurements.
Basics of electronic instruments and signal conditioning.
Operational amplifiers and their use in measurement systems. (

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

30 lectures18 hr 2 min

Electrical Measurement and Electronic Instruments
17 min
PMMC Instrument
34 min
Electrodynamic Instrument
40 min
Demonstration of PMMC and Electrodynamic Instrument
12 min
Features of PMMC and Electrodynamic Instrument
27 min
Moving Iron Instruments
27 min
Demonstration of Moving Iron Instrument
24 min
Electrostatic Instrument
19 min
Derivation of Deflecting Torque in Electrodynamic,Electrostatic & Moving Iron Instrument
62 min
Damping and Eddy Current Damping
46 min
Dynamics of the Moving Coil and Damping
28 min
Dynamics of the Moving Coil and Damping (Contd.)
33 min
Ballistic Galvanometer
24 min
Ammeter- I
22 min
Voltmeter
35 min
Ohmmeters- I
40 min
Ohmmeters- II
33 min
Rectifier based Voltmeters and Ammeter- I
35 min
Rectifier based Voltmeters and Ammeter- II
28 min
Resistance measurement with a Voltmeter and an Ammeter
33 min
Four-Terminal Resistance
34 min
Problems: Four Terminal Resistance
64 min
Error Calculation
49 min
Sensitivity, Accuracy, and Resolution of Wheatstone Bridge
50 min
Kelvin Double Bridge
52 min
High Resistance Measurement
53 min
Wattmeter Connection and Compensated Wattmeter
46 min
Single Phase Energy Meter
47 min
Demonstration : Eddy current Braking, creation of magnetic field without moving object
22 min
Single Phase Energy Meter (Contd....)
46 min

Opportunities that await you!

Skills & tools you'll gain

Engineering & Design

Project Management

Research & Developmnet

Career opportunities

FREE

Access anytime

Questions and Answers

Q: During a DFMEA review of a high-voltage battery pack test bench, you're checking insulation monitoring. You're literally googling "insulation monitoring device false negative during hipot test". The IMD is specified per an older IEC standard that allowed higher response time. The safeguard fails silently. What physical consequence is NOT prevented by the IMD in this failure mode?

A: The hard boundary is response time versus degradation rate. IMDs trip on resistance dropping below a threshold, often 100 Ω/V, but they don't arrest the physics of partial discharge. PD eats insulation long before the resistance collapses enough to trip, especially under humidity and ripple. Engineers often assume IMD equals insulation health; it doesn't.

Q: You're calibrating a precision shunt-based current measurement and end up searching "burden voltage effect on current transformer secondary". The burden resistance is increased slightly during a harness change. What happens downstream and what response avoids making it worse?

A: The number that matters is the CT knee point voltage. Raising burden pushes the operating point closer to saturation, collapsing accuracy and driving flux. Filtering or ADC tweaks don't move the knee. Reducing burden or selecting a higher VA CT does.

Q: For an under-hood voltage divider used in resistance measurement, you're searching "automotive under hood resistor corrosion mechanism". Ambient is hot, cyclic, and exposed to road salt aerosol. What is the dominant degradation mechanism?

A: Chloride plus moisture plus dissimilar metals is the threshold combination. Galvanic attack at the interface drives open circuits long before whiskers or sulfidation dominate in this location.

Q: You're specifying a voltage measurement front end and typing "difference between instrumentation amplifier and op amp for high CMRR measurement". The signal rides on 400 V common-mode with millivolt-level differential. Bandwidth is low. What configuration actually meets the duty?

A: The number engineers miss is DC CMRR, often >100 dB. Discrete diff amps lose matching over temperature. AC isolation parts don't guarantee DC accuracy. Hall sensors drift too much at millivolt resolution.