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Worksheets2025 RET Units 100 200 NOCTI review
Total questions: 20
Worksheet time: 30mins
What range best describes the minimum lethal electrical shock current?
6-25 mA
9-30 mA
100-200 mA
250-400 mA
What class of fire extinguisher should be used on electrical fires?
Class A
Class B
Class C
Class K
What health hazard is a concern due to the materials present in some electrical components?
carpal tunnel syndrome
chemical inhalation
hearing loss
surface/skin burns
What document lists hazards associated with toxic substances in the workplace?
Emergency Instruction Sheet
Globally Harmonized System
Rapid Treatment Plan
Safety Data Sheets
Which prefix is equivalent to multiplying by 1,000,000?
giga (G)
kilo (k)
mega (M)
milli (m)
What value is the equivalent of 1.6 x 10-4 A?
16 μA
160 μA
1.6 mA
16 mA
Which value is in proper engineering notation?
3.74 x 106
0.374 x 107
3740 x 103
374 x 104
An atom that has lost its valence electron(s) is:
a negative ion
a neutral ion
positive ion
valence free
The best conductors have a valence shell containing:
1 electron
2 electrons
3 electrons
4 or more electrons
A semiconductor has a valence shell that is:
full
half full
mostly full
nearly empty
Name this schematic symbol.
potentiometer
resistor
speaker
transistor
Name this schematic symbol.
light-emitting diode
photodiode
phototransistor
transformer
Name this schematic symbol.
DPDT switch
DPST switch
SPDT switch
SPST switch
Name this schematic symbol.
bulb
ground
lamp
railroad crossing
Name this schematic symbol.
AC source
DC source
inductor
speaker
What is the resistance value of a yellow-violet-orange-gold resistor?
235 Ω
470 Ω
23.5 kΩ
47 kΩ
What is the tolerance value of a brown-green-brown-red resistor?
1.5 Ω
3 Ω
15 Ω
30 Ω
For a 4-band resistor, which band indicates the multiplier?
first
second
third
fourth
Which color defines a 2% tolerance for a resistor?
brown
gold
red
silver
What is the minimum resistance that is within tolerance for a blue-grey-red-gold resistor?
6.12 kΩ
6.46 kΩ
6.80 kΩ
7.14 kΩ
