Uses Of The Generator Effect (ht Only) (GCSE Physics)

Which safety-related use of the generator effect is commonly found on trains and trams?

Which of the following best describes a practical way to increase the power output of a wind turbine’s generator at a given wind speed?

How does increasing the number of magnetic poles on a generator rotor affect the frequency of the output voltage for a fixed rotor speed?

What change will increase the induced emf in a coil according to Faraday’s law?

Which of the following best explains why a faster rotation of the turbine in a power station gives a higher electrical output?

In an electric guitar pickup the generator effect is used to produce a signal when metal strings vibrate because the vibrating string changes what?

What is the main reason large power stations use many poles on a generator rotor when producing high-frequency AC?

Why are slip rings and brushes used in AC generators to collect current rather than wires twisted around the rotating shaft?

Why are slip rings used on an AC generator while a commutator is used on a DC generator?

What is one environmental advantage of using large generators driven by renewable turbines (wind, hydro) rather than many small internal combustion engines to produce electricity?

Which device produces an electrical voltage by rotating a coil in a magnetic field and so uses the generator effect?