DC Generator Quiz

Construction of DC generator: What are the main parts of a DC generator?

• Fan, Radiator, Carburetor, Spark Plug, Exhaust Pipe

• Keyboard, Mouse, Monitor, CPU, Printer

• Battery, Capacitor, Inductor, Resistor, Transformer

• Armature, Commutator, Brushes, Field Poles, Shaft

Construction of DC generator: Explain the function of the commutator in a DC generator.

• To reverse the direction of current in the coil

• To control the temperature of the generator

• To regulate the speed of the generator

• To increase the voltage output

Construction of DC generator: Describe the role of the field winding in a DC generator.

• Regulates the flow of electricity

• Controls the speed of the generator

• Creates the magnetic field necessary for the generation of electricity

• Provides mechanical support to the generator

Working principle of DC generator: How does a DC generator convert mechanical energy into electrical energy?

• By converting heat energy into electrical energy

• By converting sound energy into electrical energy

• Through the principle of electromagnetic induction

• By converting light energy into electrical energy

Working principle of DC generator: Explain the process of electromagnetic induction in a DC generator.

• Electromagnetic induction is the result of a decrease in the magnetic field strength

• Electromagnetic induction happens when a conductor is insulated from the magnetic field

• Electromagnetic induction occurs when a conductor is stationary in a magnetic field

• Electromagnetic induction occurs when a conductor cuts through the magnetic field, creating an induced electromotive force (emf) that causes a current to flow in the conductor.

Working principle of DC generator: What is the significance of the brushes in a DC generator?

• To regulate the speed of the armature

• To provide mechanical support to the armature

• To make electrical contact with the rotating armature

• To cool down the armature

Types of DC generator: Differentiate between series-wound and shunt-wound DC generators.

• Series-wound generators have the field winding connected in parallel with the armature winding

• Shunt-wound generators have the field winding connected in series with the armature winding

• Both series-wound and shunt-wound generators have the field winding connected in parallel with the armature winding

• Series-wound generators have the field winding connected in series with the armature winding, while shunt-wound generators have the field winding connected in parallel with the armature winding.

Types of DC generator: Discuss the applications of compound-wound DC generators.

• Constant voltage applications

• AC power applications

• Variable speed applications

• High current applications

Armature reaction in DC generator: What is armature reaction and how does it affect the performance of a DC generator?

• Armature reaction only affects the performance of an AC generator

• Armature reaction causes the main magnetic field to become stronger

• Armature reaction affects the performance of a DC generator by causing distortion of the main magnetic field.

• Armature reaction has no effect on the performance of a DC generator