Generators, Alternating Current, and Mutual Inductance (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of energy is transformed into electrical energy by an electric generator?
What type of energy is transformed into electrical energy by an electric generator?
Kinetic energy
Which component allows an AC generator's coil to rotate continuously while maintaining contact?
Which component allows an AC generator's coil to rotate continuously while maintaining contact?
Slip rings
What component does a DC generator use instead of slip rings?
What component does a DC generator use instead of slip rings?
Split-ring commutator
What is the frequency of mains electricity in Ireland and the UK?
What is the frequency of mains electricity in Ireland and the UK?
50 Hz
How many times does AC current change direction per second at 50 Hz?
How many times does AC current change direction per second at 50 Hz?
100 times
What is the relationship between RMS value and peak value for sinusoidal AC?
What is the relationship between RMS value and peak value for sinusoidal AC?
If mains voltage is 230V RMS, what is the approximate peak voltage?
If mains voltage is 230V RMS, what is the approximate peak voltage?
325V
On what does the heating effect of AC in a resistor depend?
On what does the heating effect of AC in a resistor depend?
What is mutual inductance?
What is mutual inductance?
Changing current in one coil inducing EMF in another
What is the most significant factor affecting mutual inductance between two coils?
What is the most significant factor affecting mutual inductance between two coils?
Core material
What principle do transformers use to change AC voltage levels?
What principle do transformers use to change AC voltage levels?
Mutual inductance
What can an oscilloscope measure when connected to an AC source?
What can an oscilloscope measure when connected to an AC source?
Peak voltage and frequency