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WorksheetsDC Machine
Total questions: 11
Worksheet time: 7mins
If the energy conversion is from mechanical to electrical, then this machine is ...
a) Motor
b) Generator
c) Alternator
a) & c)
b) & c)
If the energy conversion is from electrical to mechanical, then this machine is ...
a) Motor
b) Generator
c) Alternator
a) & c)
b) & c)
If the armature is of lap winding, then the turns ratio is ...
equal to 2
equal to the number of poles
equal to the number of poles divided by 2
If the armature is of wave winding, then the turns ratio is ...
equal to 2
equal to the number of poles
equal to the number of poles divided by 2
In DC machines, the synchronous frequency is ...
fixed and equal to 50 Hz
fixed and equal to 60 Hz
according to the problem given
How many losses exist at any DC machine?
2
3
4
Write the scientific names of these losses
In series DC machines, the terminal current is equal to ...
a) the armature current
b) the field current
a) & b)
a) minus b)
a) plus b)
In shunt DC machines, the terminal current is equal to ...
a) the armature current
b) the field current
a) & b)
a) minus b)
a) plus b)
At the end of the course, name 2 activities that you disliked from the whole experience?
At the end of the course, name 2 activities that you found interesting from the whole experience?
