A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains conductors. It is driven at 350 rpm. The line value of emf available across the terminals is 2.8kV. Fi the frequency of induced emf and flux per pole. Frequency of Induced EMF =

Q: i. What are different types of rotors used in an alternator?

A: There  are mainly two types of rotors used in alternator.

Q: Armature reaction in an alternator primarily affects

A: Conceptual Background:- Armature Reaction:- Simply put, the armature reaction depicts how the…

Q: In a three-phase star connected alternator it is necessary to generate 7200 line voltage at…

A:

Q: 3.17. A 200-turn coil is rotating at a speed of 3600 rpm in a 4-pole generator. The flux per pole is…

A: The given question is solved in step by step process.Explanation:

Q: There are 180 double wound slots in a 3-phase, 50 Hz., 500 rpm, star connected alternator. Coil span…

A:

Q: Calculate the pitch factor for an alternator winding with 36 slots, 4 poles, and coil span of 1 to…

A:

Q: Your company is to supply a 50 Hz alternator to a European company. The stator is wye connected with…

A: Given:- f=50 Hzϕ=0.173 weberT=28 turns

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.