AC genorators

Question 1

What 3 things to produce EMF

Answer 1

Conductor
Magnetic field
Relative movement

Question 2

Most common type of generator

Answer 2

The brush-less generator

Question 3

2 things generated EMF output will depend on

Answer 3

Amount of lines of flux crossed (Voltage)

Speed of cutting the lines (frequency)

Question 4

Examples of prime movers

Answer 4

Diesel engine

Gas turbine

Question 5

How is HF generator turned, what’s it output and where is it fed

Answer 5

Belt driven
115V 1600hz
Automatic voltage regulator

Question 6

What is fed into Excitor stator

Answer 6

DC

Question 7

Purpose of rectifier assembly

Answer 7

Convert AC to DC

Question 8

How can AC voltage be altered from the generator

Answer 8

Increasing/decreasing strength of magnetic field

Question 9

If mag field around AC generator rotor is stable how is AC output produced

Answer 9

The mag field is rotated by the prime mover cutting through stator windings

Question 10

What is output from generators in HM ships and how does AVR monitor it

Answer 10

450V, 3phase, 60hz

AVR takes a sample on the sample line