DC Electrics Quiz

What is the primary source of electricity in an aircraft?

• Batteries

• Generators

• Wind turbines

• Solar panels

What does electromagnetic induction convert?

• Electrical energy to mechanical energy

• Chemical energy to electrical energy

• Mechanical energy to electrical energy

• Thermal energy to electrical energy

According to Fleming's Right Hand Rule, which finger represents the direction of the current?

• Second finger

• Thumb

• First finger

• None of the above

What does Faraday's Law state?

• Voltage is constant in a circuit

• Magnetic fields do not affect voltage

• Voltage is proportional to the rate of change of flux

• Current is proportional to resistance

What is Lenz's Law concerned with?

• The direction of induced current

• The strength of magnetic fields

• The speed of rotation

• The number of turns in a coil

What is the simplest form of a generator?

• A single loop of wire

• A complex circuit

• A battery

• A solar panel

What type of current does a simple generator produce?

• DC

• AC

• None of the above

• Both AC and DC

What is the purpose of a split ring commutator in a DC generator?

• To increase voltage

• To store energy

• To convert AC to DC

• To reduce resistance

In a series wound DC generator, what happens to the field current as the load increases?

• It remains constant

• It fluctuates

• It decreases

• It increases

What is the characteristic of a shunt wound DC generator?

• Field winding is in series with the armature

• Field winding is in parallel with the armature

• It has no field winding

• It produces AC output