What is HSS Drill Bit ?

 HSS DrillsHigh-speed steel (HSS) is a form of tool steel; HSS bits are hard and much more resistant to heat than high-carbon steel. They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon-steel bits, and have largely...

What is Dead Front in Electrical Panel ?

An electric panel will generally have one or two covers. Panels with two covers have an outer cover (which will open to the side or upwards) and an inner cover, called a “Dead Front”. The dead front cover normally has the slots / knockouts for the breakers to fit into.It...

What does NFPA 70e stand for?

NFPA 70e stand Standard for Electrical SafetyNFPA 70E, titled Standard for Electrical Safety in the Workplace, is a standard of the National Fire Protection Association (NFPA). The document covers electrical safety requirements for employees. The NFPA is best known...

SMA vs RP-SMA what is the difference ?

When looking for SMA you may find SMA and RP-SMA connectors. What is the difference in these two?Reverse polarity SMA (RP-SMA or RSMA) is designed to be incompatible with standard SMA connectors to comply with U.S. FCC regulations which seek to prevent consumers from attaching...

What is IEEE 802.1X?

    Devices attempting to connect to a LAN or WLAN require an authentication mechanism. IEEE 802.1X, an IEEE Standard for Port-Based Network Access Control (PNAC), provides protected authentication for secure network access.    An 802.1X network...

Overview of Open Data Protocol (ODP) ...

The Open Data Protocol (OData) is a protocol to request data through a query string.The Open Data Protocol (OData) is a protocol to access data on the web. It provides a uniform way to query and manipulate data sets through CRUD operations.Why we need an OData Service?AdvantagesOData...

What is the Fresnel Zone?

                 In point to point wireless communications, it is important for the line of sight between two wireless systems to be free from any obstruction (terrain, vegetation, buildings, wind farms and a host of other obstructions)....

What is RSSI and its acceptable signal strength?

RSSI stands for Received Signal Strength Indicator. It is an estimated measure of power level that an RF client device is receiving from an access point or router. At larger distances, the signal gets weaker and the wireless data rates get slower, leading to a lower overall...

What do those codes on Bearing mean ? 6309 2Z/C3 ?

Here is a little quick reference guide that explains these bearing codes in detail.(2 Min Read)Lets use a 6309 2Z/C3 as an example:S             6302         2RS^          ...

Difference between Compressor , Blower , Fan ...???

Compressor:Compressor is a mechanical device that increases the pressure of a fluid, either gas or liquid by reducing its volume. The inlet diameter of the pipe will be more than the outlet diameter. This reduces the volume flow rate and thus the pressure of the fluid...

What is Festoon Cable ?

Let’s start with the name — ‘festoon’ is a word that often refers to something suspended in a curve between two points.Simply put, festoon cable is a flat portable cord. This may help in remembering common applications for festoon cables; they are typically used in...

What is the recommended Insulation Class and Temperature for Induction Motor ?

(1 Min Read) Class F insulation with Class B temperature rise is the most commonly required insulation system for industrial motors i.e., max. temperature rise of 80 °C above ambient temperature.The use of Class F insulation (ambient temperature 40 °C + Max. permissible...

Why Single Stranded Wires are not used for Domestic Wirings ?

(2 Min Read)In Domestic wiring circuits, Conduits (Pipe protecting electrical wiring) have large number of bends and turns with smaller dia.Single stranded wire is not  flexible, hence cable won't go through easily inside the conduits and also increase the...

What is the Direction of Rotation of Induction Motor if we Connect R, Y, B in U, V, W ?

(1 Min Read)    When the mains supply is R, Y, B is connected to stator terminals marked U, V, and W respectively then the motor will Rotate Clockwise, as viewed from the D-end. The direction of rotation can be reversed by interchanging any two...

What are the IEC Standards for Induction Motors ?

(5 Min Read)     The following guide serve as reference lists for Electrical and Mechanical IEC Standards that apply to most Low Voltage Induction Motors. In this context, Low Voltage refers to Motors that operate at voltages less than 1000 V and...

What does the AC1 and AC3 terms mean in Power Contactors ?

           The duty of electrical contractor is categorized by the types of electrical loads used such as inductive, or resistive or capacitive and duty cycle such as plugging or runtime breaking, short circuit breaking etc.   ...