Module 7745 Chapter A

With regards to Electrical Machines what is the output from a Generator

• Electrical Energy

• Pressure

• Mechanical Energy

• Light

What is the name given to the induced force when a conductor is passed through a magnetic field

• Electromagnetic Force

• Electromotive Force

• Potential Difference

• Electroinductive Force

Which of these statements is not a rule of magnetic fields around a magnet

• Lines of flux flow from South to North, outside the magnet

• Like poles repel

• Unlike poles attract

• Every Magnet has a North and a South Pole

which of these factors will increase the strength of a magnetic field in a solenoid.

• Increasing the number of turns

• Decreasing the current

• Decreasing the number of turns

• Increasing the resistance

The follow statement describes which law?

"The direction of an induced emf is always to oppose the motion or the change that produced it."

• Lenz's Law

• Faraday's Law

• Newtons 1^st Law

• Newtons 2^nd Law

Fleming's left hand rule is for which electrical machine

• Motor

• Generator

• Transformer

• Transducer

In a simple AC Generator how is the current transferred to the output circuit.

• Carbon brushes and Slip rings

• Slip rings and ceramic Commutators

• Commutator segments

• Ceramic brushes and Commutators