Electricity for non-electrical staff

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