Practice Test

1) The mains electricity supply frequency in South Africa is how many cycles per second?

1) 250 Hz

2) 512 Hz

3) 50 Hz

4) 5 Hz

2) Identify this type of Cable?

1) Ferrous Cable

2) Solid cable

3) Radio cable

4) Co-axial cable

3) The correct phonetic code for the word APPLE is:

1) Alpha, Paw, Paw, Lima, Elephant

2) Alpha, Papa, Papa, Lego, Echo

3) Alpha, Papa, Papa, Lima, Echo

4) Alpha 236

4) If a gas in a fixed volume container is heated, the resultant pressure of the gas:

1) Remains the same

2) Increases

3) Decreases

4) Is inversely proportional to the heat.

5) The following is the symbol for what ?

1) Underground Water

2) A battery

3) A possible Ambush

4) Earth or Ground

6) Define a Simplex transmission,

1) Where an operator transmits and receives on the same frequency.

2) Where an operator transmits on one frequency and Receives on another frequency.

3) Where transmit and receive frequencies are separated by an Offset.

7) A 100-ohm resistor is connected in parallel with a 200-ohm resistor. The equivalent resistance of the two resistors is:

1) 50 ohm

2) 67 ohm

3) 75 ohm

4) 300 ohm

8) The following are types of what ?

Lead Acid
Nickel-Cadmium ( Nicad)
Nickel- Metal Hydride (NiMH)
Lithium-Ion (Li-ion)

1) Quick Drying Paint

2) Rat Poison

3) Rechargeable batteries

4) Paint Remover

9) The purpose of a Radio Transceiver is to:

1) Watch pay TV for free

2) Send and Receive information by using radio waves

3) To reduce airtime bills

4) To advertise your skills.

10) Commonly used batteries such as a car battery have two terminal contact points. What are their names?

1) North and South

2) Cathode and Dipole

3) Red and Green

4) Anode and Cathode

"Electronic Basics" Practice Test

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