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WorksheetsWeek 5_Electrical Machine
Total questions: 10
Worksheet time: 8mins
AC generator converts:
Mechanical energy to electrical energy
Electrical energy to mechanical energy
Heat energy to mechanical energy
Chemical energy to electrical energy
What is true of AC GENERATOR?
It works on the principle of electromagnetic induction
The mechanical energy of the rotation is converted into electrical energy
A pair of slip rings are used in the AC generator
All the above
The electricity generated from the power plant is ……
Alternating Current
Direct Current
Delayed Current
Eddy Current
In an AC generator, the contacts are made from a soft but highly conductive material, usually carbon, and are called....
Coils
Armatures
Slip Rings
Brushes
Generators generate
electricity
mechanical energy
heat
chemical energy
Which is the device that used to converts AC current into DC current
rectifier
inverter
What is the advantages of Alternating Current?
The voltage could be lowered or raised by using a transformer
The current will create a back emf
The current is not stable and it tends to fluctuate with time
Low voltage is for generation and transmission
DC current can be generated from various sources, except:
Rectifiers
Dynamos
Photovoltaic cells
Inverter
Explain the difference between Alternating Current And Direct Current?
