Topic 12 - Fluorescent Low Intensity Discharge Intensity

One purpose of the ballast in a fluorescent light is to:
Suppress radio interference
Power factor correction
Prevent interference with switching operations
Limit the current through the discharge tube
Another given name to a magnetic ballast is:
Solid state
Choke
Magnetic starter
Inductive starter
An electronic ballast allows a fluorescent lamp to be operated at:
High frequency
Low frequency
Higher voltage
Lower voltage
The traditional fluorescent starter:
Contains electronics for switching
Contains a capacitor to improve power factor
Contains no moving parts within argon gas
Contains a bi-metal strip for switching
One purpose of the starter in a fluorescent light is to?
Warm up the lamp filaments
Power factor correction
Prevent interference with switching operations
Limit the current through the discharge tube
The standard length fro a 36 watt fluorescent tube is:
600 mm
1000 mm
1200 mm
1500 mm
Mercury exposure & P.C.B's are risks associated with what type of equipment:
Incandescent light fittings
Fluorescent lamps and equipment
Halogen down light transformers
Solar power systems
Power factor improvement capacitors for fluorescent lamp circuits should be connected
In series with the ballast
Across the lamp terminals
At the switchboard
Across the blocking inductor
What is the operational frequency range for electronic ballasts?
20 - 50 hertz
20 - 50 kilohertz
50 - 100 hertz
20 - 100 kilohertz
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