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WorksheetsElectricity for non-electrical staff
Total questions: 20
Worksheet time: 11mins
These are elements of an atom .....
electron
proton
nucleus
molecule
what is the structure of Methane?
one C atom and 2 H
2 atom C and 4 aom H
one atom H and 4 atom C
one atom C and 4 atom H
An atom just loose 2 electron, what is the potential charge?
1 positive
1 negative
2 positive
2 negative
A nucleus with a proton will have ................... charge.
1 negative
1 positive
2 negative
2 positive
Select the true statements only
electron is bigger then proton
proton is more then 40 times bigger then electron
nucleus has no charge
hole is slower then electron
What possibly the material in red?
cotton
rubber
wood
carbon
Your body resistance is measured at 950 KOhm, and you are touching the life wire at 240V which your leg is shorted to ground. How much current that flows into your body?
1 A
2A
0.2 mA
0.2 uA
What is the purpose of this component on a pcb?
to increase the IC speed
to absorb sound generated from internal fan
to optimize power conversion
to dessiminate heat to reduce the temperature
why there are four wires in a transmission lines?
It is single phase system
it is a dual phase system
it is a three phase sysem
it has double grounding system
Ahmad saw two wires coming his house from a TNB pole. Select the true statments
it is a single phase system
The voltage is 240V
the frequency is 50Hz
The voltage is 415 V
Which one here is not a semiconductor?
diode
transistor
led
switch
What is Ohm's law?
Voltage is proportional to resistance
voltage is proportional to current
Current is inverse proportional to resistance
Current is proportional to resistance
What is the resistor value?
201 Ohm
200 KOhm
200 MOhm
201 Kohm
What is the resistance value?
0.98 ohm
98 Ohm
9.8 Ohm
9.8 KOhm
Calculate the current that flows into the circuit.
120.8mA
60.4mA
198.7mA
12mA
Calculate the total resistance for this circuit.
33.3ohm
140ohm
11.3ohm
113.3ohm
Calculate Vout.
0.9V
4V
0.4V
9V
A bulb was rated 11W at 240V. What is the current that flows into it?
4.6mA
46mA
400mA
230mA
100 Watt means?
10J/s
1000J/s
100 J/s
1 J/s
Ali installed 1A fused at the power plug of this oven. He started to use for warming a big piece of chicken. what happen?
everything is OK
Oven runs and then stopped
oven runs and blow internally
elcb is tripped
