Electrical Articles Archive
Types of DC generators
Generators are mainly divided into two types. Separately excited Self-excited generator If the emf is applied externally then it is separately excited generators. If field winding is energized by the current produced by generators itself, this is
Concept of back emf for dc motor
The concept of back emf for dc motor Consider a case of the single conductor being placed in the magnetic field and carrying current in the same direction due to motor action. This conductors experiences force and
Working principle of DC generator
Whenever there is a relative motion between a conductor and magnetic field emf will be induced in the conductor. The conductor moves relative to the field and induced emf is called dynamically induced emf. Fleming left-hand rule
What are the application of UPS
UPS [uninterruptible power supply] An uninterruptible power supply is a device that has an alternate source energy that can be provided power when the primary power source is temporarily disabled the switchover time must be small enough
What is inverter?
Inverter Inverter change direct current [DC] to alternating current[ AC] at the desired output voltage and frequency . some industrial applications of inverters are for induction heating, standby aircraft power supply etc. Appliances that need DC but
What is MCB (miniature circuit breaker)
MCB is a mechanical device operate automatic operation designed to connect and disconnect the electrical circuit in the ordinary and extraordinary situation suitable both for A.C and D.C voltage. The main function of the MCB to protect
Advantages and disadvantages of solar energy plant
Solar energy plant A photovoltaic cell is the basic that converts solar radiation into electricity PY cell can be either circular in construction or square. Cells are arranged in a frame to a module, modules put together
Construction of MCB
The 10 ampere DIN rail- moistened thermal magnetic miniature circuit breaker is the most common style in modern domestic consumers units and commercial Actual power level Used to manually trip and reset the circuit’s breaker. Also indicates
Earth leakage circuit breaker (ELCB)
Earth leakage circuit breaker [ELCB] is a safety device used in the electrical installation with high earth impedance to prevent shock. It defects small stray voltage on metal enclosures of electrical equipment and interrupts the circuits if
What is fuse and its types?
Fuse It is a short length of wire made of lead /tin/alloy of lead and tin-zinc having a low melting point and low ohmic losses under normal operating conditions it is designed to carry the full load