15 Questions
What are the two main parts of a D.C machine?
Stator and Rotor
What type of winding is a combination of lap and wave winding?
Multiplex Winding
What is the function of the commutator in a D.C machine?
To facilitate the flow of current between the rotor and the stator
What is the purpose of the pole shoes in a D.C machine?
To provide a path for the magnetic flux
What is the main function of the bearings in a D.C machine?
To support the rotor shaft
What type of winding is used in the armature of a 3 D.C. machine?
Lap and wave winding
What is the relationship between the output current and the power generated in a DC generator on full load?
The output current is directly proportional to the power generated
What is the primary purpose of calculating the terminal voltage on no load in a DC generator?
To determine the open-circuit voltage of the machine
What is the purpose of calculating the total power generated on full load in a DC generator?
To determine the rating of the machine
What is the effect of armature winding type on the performance of a DC generator?
Lap winding decreases the voltage regulation, while wave winding increases it
What is the type of armature winding used in the machine?
Wave-wound armature
What is the induced emf in the machine when it is running at 1800 r.p.m.?
300 V
What is the relationship between the speed of the machine and the induced emf?
The induced emf is directly proportional to the speed of the machine
What is the purpose of the armature winding in a DC machine?
To provide a path for the output current
What is the effect of increasing the number of conductors in the armature winding on the machine's performance?
It increases the output voltage of the machine
Learn about the main parts of a D.C machine, including the stator and rotor components, and understand the different types of armature winding. Test your knowledge of D.C machine construction and operation.
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