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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
What is load bearing structure
In load-bearing structure, the entire load of the superstructure is transferred to the walls as roof and floors are directly supported, on walls. Walls, in turn, transfer the load to the underlying soil through wall footing. This
Different types of footings
There are different types of footings such are : Spared Footing Wall Footing Isolated Footing Column Combined footing Cantilever or strap Footing Inverted arch footing Spared Footing It is the most common shallow foundation used to transfer
What is superstructure?
The superstructure is that part of the building which is constructed above the plinth level. The compounds of the superstructure are walls, pillars columns, doors, windows, lintels, arches, floors, ceiling, beam, stairs, and roof. the superstructure may
What is pile foundation
A pile is defined as a slender column of transferring the structural load the deep underlying Layers. Foundations provide support to the structure, transfers the loads from the structure to the soil. The piles, therefore, have end
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