Potentiometer: Definition, Types, And Working Principle

What is a Potentiometer? A potentiometer (also known as a pot or potmeter) is defined as a 3 terminal variable resistor in which the resistance is manually varied to control the flow of electric current. A potentiometer acts as an adjustable voltage divider. How Does a Potentiometer Work? A potentiometer is a passive electronic component. … Read more

Thermistor: Definition, Uses & How They Work

What is a Thermistor? A thermistor (or thermal resistor) is defined as a type of resistor whose electrical resistance varies with changes in temperature. Although all resistors’ resistance will fluctuate slightly with temperature, a thermistor is particularly sensitive to temperature changes. Thermistors act as a passive component in a circuit. They are an accurate, cheap, … Read more

Miniature Circuit Breaker or MCB

What is MCB? Nowadays we use more commonly miniature circuit breaker or MCB in low voltage electrical network instead of fuse.The MCB has some advantages compared to fuse. It automatically switches off the electrical circuit during abnormal condition of the network means in over load condition as well as faulty condition. The fuse does not … Read more

What is Low Power Factor Wattmeter?

As the name suggests the low power factor meter are the instruments that measures lower values of power factor accurately. Before we study more about the low power factor meter, it is very essential to know why there is a requirement of low power factor meter though we use ordinary electrodynamometer to measure power factor? … Read more

Vacuum Pump Rotary Pump Diffusion Pump Molecular Pump

The pump utilized to create a vacuum inside a closed container is called a vacuum pump. Absolute vacuum cannot be created, hence the degree of vacuum comes into picture when we discuss a vacuum pump. Any vacuum pump has three main features. Exhaust Pressure Degree of Vacuum Pumping Speed. Exhaust Pressure of a Vacuum Pump … Read more

Electric Poles

For carrying of overhead line, wooden poles, concrete poles, steel poles and rail poles are used. Which poles are to be used, depending on the importance of load, location, and place, cost effect of such construction, including maintenance cost, and keeping its profit element in mind. In low voltage line for all phases, natural and … Read more

Steady State Stability

As an introduction, we need to know about power state stability. It is really the capability of the system to return to its steady state condition after subjected to certain disturbances. We can now consider a synchronous generator to understand the power system stability. The generator is in synchronism with the other system connected to … Read more

Fault of Electric Cable

It can be of three (3) types of electric cable faults found. They are There may be a short circuit between two conductors, There may be earth fault, i.e., fault between conductor and ground, There may be open circuit caused due to disconnection of the conductor. There can be more than one of the faults … Read more

Electric Pressure Cooker

In an electric pressure cooker there is an inner cooking pot. It is removable. It is normally made of aluminum or stainless steel. The pot may have a copper-clad bottom for uniformed heating. There is a lid that is a removable or hinged cover for closing the opening of the exterior pot. The lid has … Read more

Electric Water Heater

The electric heaters used to heat up water are called electric water heater. It is of three (3) types i.e. Normal Plate Heater, Immersion Heater, Geyser Heater. Normal Plate Heater It is used for heating a small amount of water, such as water for shaving etc. Its construction is very simple. It consists of two … Read more