differences between Fuse & Circuit Breaker

 

Basis for Comparison	FUSE	CIRCUIT BREAKER
MAINTENANCE	Fuse can only be used 1 time, it is a non- reusable device	Circuit Breaker can offer a total no of operations as declared by the manufacturer.
TRIP TIME	2-5ms, quickest operating device	Vary as per the device, ex: for ACB it can be 30ms & for MCCB can be less than 10ms
UTILIZATION CATEGORY	If the first letter is ‘g’ means both protection (O/L + S/C), If the first letter is ‘a’ only S/C will be there.	If category A it means no Icw shall be there, If category B, Icw shall be there
METHOD OF TRIPPING	‘SOLDER’ for Overload, ‘ELEMENT’ for Short Circuit	Available as ‘MICROPROCESSOR’ type & ‘THERMAL MAGNETIC’ type

Difference Between Electrical and Electronic Devices

 

Comparison Chart

Basis For Comparison	Electrical Device	Electronics Device
Definition	It is defined as the device which uses the electrical energy for performing the work.	The device which controls the flow of electrons for performing the particular task is known as the electronic devices.
Material Used	Metals like copper and aluminum are used for the conduction of current.	Semiconductor material like silicon, germanium, etc.
Operating Principle	Convert electrical energy into other forms of energy.	Uses the electrical energy for performing a particular task.
Current	Alternating Current	Direct Current
Voltage	Works on high voltage.	Works on low voltage
Power consumption	More	Less
Manipulation	Do not manipulate the data	It manipulates the data.
Response Time	Fast	Slow
Required Space	More	Less
Safe	Less	More
Uses	For doing mechanical work.	For amplifying the weak signal or for coding and decoding the information.
Examples	Transformer, motor, generator, etc.	Transistor, diode, microprocessor, flip-flop, amplifier, etc.

Difference Between Resistance & Resistivity

Comparison Chart

Basis For Comparison	Resistance	Resistivity
Definition	Property of substance due to which it opposes the flow of electrons.	It is defined as the resistance of material having specific dimensions.
Formula
SI Unit	Ohms	Ohms-meter
Symbol	R	ρ
Dependence	Length, cross-section area of conductor and temperature.	Temperature

Difference Between Electrical Energy and Electrical Power

 

Comparison Chart

Basis For Comparison	Charge	Current
Definition	It is a physical property of particles that allow them to interact with each other.	It is the rate of flow of charge particles (generally electrons).
Force	Experience force only in the electric field.	Experience force both in the electrical and magnetic field
Unit	Coulombs (C)	Amperes (A)

Difference Between Conduction and Induction

 

Comparison Chart

Basis for Comparison	Conduction	Induction
Basic	It results in the flow of current due to the electric field.	It results in the flow of current due to changes in the magnetic field.
Arrangement of conductors	It requires direct contact between charged and uncharged conductors.	No direct contact is required between charged and uncharged bodies.
Direction of current	The current in both the conductors flows in the same direction.	The induced current is opposite in direction as that of actual current.
Gradient path	Due to the transferring nature of charges, a gradient path is required.	Due to the inducing nature of charges, a gradient path is not required.
Amount of charge	Decreases, due to distribution of charges.	Remains constant

Difference Between Charge & Current

 

Comparison Chart

Basis For Comparison	Charge	Current
Definition	It is a physical property of particles that allow them to interact with each other.	It is the rate of flow of charge particles (generally electrons).
Force	Experience force only in the electric field.	Experience force both in the electrical and magnetic field
Unit	Coulombs (C)	Amperes (A)

Difference Between Heat and Temperature

 

Comparison Chart

Basis for Comparison	Heat	Temperature
Basic	A form of energy	Measurement of thermal energy in a substance.
Symbolically represented as	Q	T
Defined as	Ability to do work.	Measures the amount of heat.
SI unit	Joule	Kelvin
Other measuring units	Calories	Fahrenheit, Celsius
Depends on	Mass, type of particle, speed of the particle.	Only on average molecular motion.
Measured by	Calorimeter (using principle of calorimetry)	Thermometer
Signifies	Total potential and kinetic energy of the substance	The average kinetic energy of the molecules of the substance.
Measurement	Product of no. of molecules and energy possessed by each molecule.	The speed of molecular motion in a substance signifies the level of temperature.

Difference Between RTD and Thermocouple

 

Comparison Chart

Basis for Comparison	RTD	Thermocouple
Operating Principle	Temperature changes with a change in resistance.	Temperature changes with change in emf generated.
Response time	1 – 50s	0.1 – 10s
Cost	High	Low
Operating range	-200 to 600°C	-200 to 2000°C
Physical size	Large	Comparatively small
Sensitivity	Low	Quite high
Accuracy	More	Less
Self-heating	Exist	Not Exist
Stability	More	Comparatively less
Output	Linear	Non-linear
Applications	Used to measure engine temperature along with the temperature of amplifier and oil temperature sensor, etc.	Measures the temperature of chemical and petroleum plants and detects the temperature of metals and aluminum for industrial purposes.

Difference Between Electricity and Magnetism

 

Comparison Chart

Basis for Comparison	Electricity	Magnetism
Basic	The flow of charged particles results in electricity.	The interaction between moving charges results in an attractive or repulsive force which is called magnetism.
By cause of	Both static and moving charges.	Specifically, due to moving charges.
Monopoles	Exist	Not Exist
Feature	It is an invisible force in nature.	It is regarded as a by-product of electricity.
Associated with	Positive and negative charges.	North and south poles.
Type of pole	Monopole	Dipole
Used in	Lighting, heating, transportation, etc.	A compass needle, doors of refrigerators, MRI machines, etc.

Difference Between Positive and Negative Feedback

 

Comparison Chart

Basis for Comparison	Positive Feedback	Negative Feedback
Also called as	Regenerative feedback	Degenerative feedback
The relation between input and output	In phase	Out of phase
Overall gain	Greater than the gain of the system where feedback is not present.	Smaller than the gain of the system where feedback is absent.
Effective input	Sum of applied input and fed-back signal.	The difference between applied input and the fed-back signal
The transfer function of the system with respective feedback
Stability	Less	Comparatively more
Phase shift	0° or 360°	180°
Feedback is taken from	Non-inverting terminal of the op-amp	Inverting Terminal of op-amp
Sensitivity	Low	High
Use	In oscillators.	In amplifiers.