Skip to content

Polytechnic Hub

for Electronics, Electrical, Mechanical, Automobile & Textiles

  • Home
  • Electrical
    • Rectification
  • Electronics
  • PLC
  • Inspection
  • Contact Us
  • facebook.com
  • twitter.com
  • t.me
  • instagram.com
  • youtube.com
Subscribe
Top Stories
Is Duracell 245 the Same as 2CR5?
May 21, 2026
Can I Use Two Smaller Batteries Instead of One 4D Battery?
May 20, 2026
What is an Aluminum heat sink and what factors affect its quality?
August 11, 2021
Are There Any Benefits of Using Exam Dumps for Passing Microsoft 70-410 Test?
January 29, 2020
What is simple mechanisms
May 9, 2019
Theory of machine
May 9, 2019
Magnetic hysteresis
August 14, 2018
Magnetic leakage and fringing
August 13, 2018
Magnetic circuit
August 13, 2018
Electromagnetism
August 12, 2018
Magnetic flux(∅)
August 12, 2018
Superposition’s theorem
August 12, 2018
Difference between series circuit and parallel circuit
August 11, 2018
Kirchhoff’s laws
August 11, 2018
Source of electrical energy
August 11, 2018
What is ohm’s law ?
August 10, 2018
Voltage rise and voltage drop
August 10, 2018
Analog between hydraulic and electric circuits
August 10, 2018
Capacitance
August 9, 2018
Atomic structure
August 9, 2018
Tips To Pass Cisco CCNA 200-125 Routing & Switching Certification Exam
August 7, 2018
Functions of automatic star delta converter
July 17, 2018
What is a variable frequency drive?
July 17, 2018
What is smooth starter ?
July 10, 2018
Gas turbine cogeneration system
July 10, 2018
What is extraction condensing steam turbine
July 9, 2018
Bottoming cycle type of cogeneration
July 9, 2018
Topping cycle
July 6, 2018
What is P.F tariff ?
July 5, 2018
What is TOD tariff?
July 3, 2018
Energy audit schemes
July 3, 2018
Bill collection facility
July 1, 2018
Amorphous iron
July 1, 2018
Energy efficient transformer
June 30, 2018
Compensating reactive power flow
June 30, 2018
Transmission and distributions losses in maharashtra
June 30, 2018
What is cast resign ?
June 29, 2018
What is flexibility
June 29, 2018
Measurement of electrical
June 29, 2018
Effect of voltage unbalances parameter
June 28, 2018
Types of motor enclosure
June 28, 2018
What is gear driver ?
June 28, 2018
What are core lamination
June 27, 2018
Isolating transformer
June 27, 2018
What is belt drives
June 27, 2018
What is changing to a different winding
June 26, 2018
What is copy rewinding
June 26, 2018
Types of re-lamping
June 26, 2018
Current balancing procedure
June 15, 2018
Meter inaccuracies
June 15, 2018
What is power theft?
June 15, 2018
What is copper losses
June 14, 2018
What are copper losses by conductor
June 14, 2018
Metal halide lamps
June 14, 2018
Compare positive feedback and negative feedback
June 13, 2018
What is transposition
June 13, 2018
Eight major equipment in the substation
June 13, 2018
Classification of amplifiers according
June 13, 2018
Methods of coupling
June 13, 2018
Necessity of coupling
June 13, 2018
What is an indicator?
June 12, 2018
Application of astable multivibrator
June 12, 2018
Explain the frequency stability of an oscillator
June 12, 2018
Differentiate between single-walled carbon nano-tube and multi-walled carbon nano-tube
June 12, 2018
Difference between feeder and distributer
June 12, 2018
Comparison of A.C distribution with D.C distribution
June 12, 2018
Frequency stability of an oscillator
June 11, 2018
What is positive feedback
June 11, 2018
Classification of oscillators
June 11, 2018
Explain barkhausens criteria for oscillation
June 11, 2018
Applications of nano-materials
June 11, 2018
Construction of gas pressure cable
June 11, 2018
Basic principles of solution
June 11, 2018
What are liquid crystal polymers?
June 11, 2018
How composite materials are used as industrial materials?
June 11, 2018
How are LSP classified?
June 11, 2018
What are biodegradable polymers?
June 10, 2018
How is conducting polymers classified?
June 10, 2018
Properties of conducting polymers
June 10, 2018
What are the functions of a lubricant?
June 10, 2018
Difference between cloud point and pour point
June 10, 2018
What is steam emulsification number
June 10, 2018
Significance of saponification value
June 10, 2018
What is cloud point and pour point
June 10, 2018
Determination and significance of acid value
June 10, 2018
How is viscosity index calculated for unknown oil?
June 10, 2018
Method of determination
June 9, 2018
What are viscosity and viscosity index
June 9, 2018
Significance of relative viscosity at different temperature
June 9, 2018
Properties of bio-degradable lubricants
June 9, 2018
What are bio-degradable lubricants?
June 9, 2018
What is viscosity and viscosity index
June 9, 2018
Applications of bio-degradable lubricants
June 9, 2018
Advantages and disadvantages bio-degradable lubricants
June 9, 2018
Distinguish between flash point and fire point
June 9, 2018
What is consistency and drop of grease
June 9, 2018
Dc machine
June 8, 2018
What is lubricating emulsion
June 8, 2018
Blended oils
June 8, 2018
Petroleum lubricating oil
June 8, 2018
Posted inElectronics Articles

Is Duracell 245 the Same as 2CR5?

In the case of specialty batteries, such an occurrence is not a rarity to experience in the quantity of similar-sounding products. The Duracell 245 and the 2CR5, two naming systems…
Continue Reading
Posted by Technical Editor May 21, 2026
Posted inElectronics Articles

Can I Use Two Smaller Batteries Instead of One 4D Battery?

The 4D battery is commonly used in heavy-duty cars, boats, Alma vehicles, and factory tools, as well as in the industrial environment. It is, however, bulky, heavy, and costly, thus…
Continue Reading
Posted by Technical Editor May 20, 2026
Posted inElectronics Articles

What is an Aluminum heat sink and what factors affect its quality?

There are different metals with different properties, some metals are used for luxury purposes such as diamond and gold, others are used for building purposes such as brass, nickel, steel,…
Continue Reading
Posted by Technical Editor August 11, 2021
Posted inInformation

Are There Any Benefits of Using Exam Dumps for Passing Microsoft 70-410 Test?

In its exam policy, Microsoft specifies that the candidates for itstests should not use braindumps. But still, most people prefer them as their primary preparation tool for the reason that…
Continue Reading
Posted by Technical Editor January 29, 2020
Posted inMechanical Articles

What is simple mechanisms

Introduction A machine is a device which receives energy and transforms it into some useful work. A machine consists of a number of parts or bodies. The mechanisms of the…
Continue Reading
Posted by Technical Editor May 9, 2019
Posted inMechanical Articles

Theory of machine

Definition The subject Theory of Machines may be defined as that branch of Engineering-science, which deals with the study of relative motion between the various parts of a machine, and forces…
Continue Reading
Posted by Technical Editor May 9, 2019
Difference between FDMA and TDMA
Posted inElectronics Articles

Difference between FDMA and TDMA

Following are the difference between FDMA (frequency division multiple access) and TDMA (time division multiple access) : FDMA TDMA FDMA stand for frequency division multiple access. TDMA stand for time division multiple…
Posted by Technical Editor May 10, 2017
What is IEEE 802.11?
Posted inElectronics Articles

What is IEEE 802.11?

IEEE 802.11 is a combination of media access control (MAC) and physical layer specification used to implement wireless local area network (WLAN) computer communication in the 2.4, 3.6, 5 and…
Posted by Technical Editor May 10, 2017
Posted inElectronics Articles

Features of IEEE 802.11

There are some important features of IEEE (Institute of electrical and electronics engineers) 802.11 which are given below, The IEEE 802.11 gives 1 or 2 MB per second transmission in…
Posted by Technical Editor May 10, 2017
Block diagram of digital frequency meter (DFM)
Posted inElectronics Articles

Block diagram of digital frequency meter (DFM)

The basic block diagram of basic digital frequency meter (DFM) is shown in above figure. The signal whose frequency we have to be measured is first to be amplified through…
Posted by Technical Editor May 10, 2017
Posted inElectronics Articles

Advantages and disadvantages of IEEE 802.11

There are some important advantages of IEEE 802.11 are given below, The IEEE 802.11 is easy to installation. It has higher frequency range. It has efficient coding technique. The IEEE…
Posted by Technical Editor May 10, 2017
Advantages and disadvantages of LCD (liquid crystal display)
Posted inElectronics Articles

Advantages and disadvantages of LCD (liquid crystal display)

There are some advantages of liquid crystal display (LCD) which are given below, The LCD can be made in large sizes of over 60 inch or 150 cm diagonal. It…
Posted by Technical Editor May 9, 2017
What is RTOS (Real time operating system)?
Posted inElectronics Articles

What is RTOS (Real time operating system)?

The RTOS stands for real time operating system. The RTOS is an operating system which is designed for real time applications that follow the real time criteria, efficiency, timeliness and…
Posted by Technical Editor May 9, 2017
What are the functions of operating systems?
Posted inUncategorized

What are the functions of operating systems?

There  are some important functions of operating systems are given below, The operating system is provides security and information protection. It is manages the processor by scheduling among different program…
Posted by Technical Editor May 9, 2017
What is operating system and its types?
Posted inElectronics Articles

What is operating system and its types?

The operating system is a collection of software components of a computer system which is reliable for the management, coordination and the sharing of the resource of the computer. It…
Posted by Technical Editor May 9, 2017
Application of IEEE 802.11
Posted inElectronics Articles

Application of IEEE 802.11

There are some important application of IEEE 802.11 are given below, It is used in data collection, human machine interfaces (HMI) and web based system monitoring, programming and management in…
Posted by Technical Editor May 9, 2017

Posts pagination

Previous page 1 … 56 57 58 59 60 … 92 Next page
You May Have Missed
Posted inElectronics Articles

Is Duracell 245 the Same as 2CR5?

Posted by Technical Editor May 21, 2026
Posted inElectronics Articles

Can I Use Two Smaller Batteries Instead of One 4D Battery?

Posted by Technical Editor May 20, 2026
Posted inElectronics Articles

What is an Aluminum heat sink and what factors affect its quality?

Posted by Technical Editor August 11, 2021
Posted inInformation

Are There Any Benefits of Using Exam Dumps for Passing Microsoft 70-410 Test?

Posted by Technical Editor January 29, 2020
Copyright 2026 — Polytechnic Hub. All rights reserved. Bloghash WordPress Theme
Scroll to Top