WorksheetsFlourescent and SSO EII
Total questions: 10
Worksheet time: 3mins
Name
Class
Date
1.
The function of ballast in discharge lamps is to ….
a)
Inject high current at start of the lamp.
b)
limits supply current.
c)
reduce overheating.
d)
stabilized voltage of the lamp.
2.
Preheat starting method consist of
a)
Glow and Rapid type.
b)
Glow and Thermal type.
c)
Rapid and Instant type.
d)
Rapid and Thermal type.
3.
….. injects HV and regulates the voltage at normal operation.
a)
Electronic Ballast.
b)
Instant Start Ballast.
c)
Rapid start Ballast.
d)
Preheat start Ballast.
4.
What cause a “hot-spots” on Tungsten Halogen lamps?
a)
Cracked on bulb.
b)
Water splash on bulb.
c)
Touched bulb bare hands.
d)
Exposed to sunlight.
5.
This circuit uses minimum MIMS of 2.5 mm square and 4 mm square PVC/PVC cable. This circuit is.
a)
A1 Ring Circuit
b)
A2 Radial Circuit
c)
A3 Radial Circuit
d)
A4 Radial Circuit
6.
“Induce high voltage to cause discharge in fluorescent tube”. This component is
a)
Parallel Capacitor at supply
b)
Parallel Capacitor at starter
c)
Starter
d)
Choke
7.
What is FALSE about Non-fused Spurs limitation?
a)
Cannot supply more than 2 single SSO.
b)
Cannot supply more than 1 double SSO.
c)
Cannot supply more than 1 appliance.
d)
Cannot supply more than 2 double SSO.
8.
What is the suitable fuse rating for double SSO?
a)
1 x 13 A
b)
1 x 6 A
c)
2 x 13 A
d)
2 x 6 A
9.
In calculating design current of discharge lamps, a factor of …… must be multiplied to its rated current value.
a)
0.6.
b)
0.8.
c)
1.6.
d)
1.8.
10.
What is TRUE about BS1363 socket outlet?
a)
Round pins
b)
Fused socket.
c)
Maximum Rated voltage is 415V.
d)
Minimum rated current is 13A.
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