E103A Theory 1

Which is not an area within the electrotechnology industry:

• Air Conditioning and Refrigeration

• Electronics and Communications

• Computer programming

• Electrical installation and maintenance

The state wide electrical system that delivers power to the cities and country basically consists of generation, transmission and

• High Voltage Distribution

• High Voltage Distribution

• Extra Low Voltage Distribution

• High Voltage and Low Voltage Distribution

Current in a solid conductor is the movement of

• electrons

• atoms

• atoms

• ions

Conduction of electric current through a gas is achieved by

• breaking of covalent bonds

• movement of protons

• ionisation of the gas

• kinetic energy

Which does not describe an open circuit

• Circuit current will be zero

• Switch is open

• Resistance is zero ohms

• Broken conductor

To protect the circuit wiring, a fuse is connected in:

• series with the load

• parallel with the load

• series/parallel with the load

• parallel with the supply

The number of units in one milli unit is one multiplied by

• 10⁶

• 10^-6

• 10³

• 10^-3

The voltage measured across a closed switch will equal

• approximately twelve volts

• zero volts

• zero volts

• the total supply voltage

Current in a circuit is directly proportional to

• resistance

• temperature

• capacitance

• voltage

Current in a circuit is inversely proportional to

• resistance

• temperature

• capacitance

• voltage