CBT Electronic Fundamentals

Question 1

What is Ohm’s Law used to calculate in electrical circuits?

Accepted Answer

Voltage, current, and resistance

Answer

Magnetic field strength

Answer

Power factor

Answer

Phase angle

Question 2

What happens to total resistance when resistors are added in parallel?

Accepted Answer

Total resistance decreases

Answer

Total resistance increases

Answer

Total resistance remains unchanged

Answer

Total resistance becomes infinite

Question 3

Which unit is used to measure electrical capacitance?

Accepted Answer

Farads

Answer

Ohms

Answer

Henries

Answer

Watts

Question 4

What is the purpose of a diode in a circuit?

Accepted Answer

Allows current to flow in one direction

Answer

Stores electrical energy

Answer

Amplifies electrical signals

Answer

Blocks all current flow

Question 5

What is the role of inductance in an AC circuit?

Accepted Answer

Opposes changes in current

Answer

Reduces voltage

Answer

Increases resistance

Answer

Filters noise signals

Question 6

What kind of waveform is typically produced by an AC generator?

Accepted Answer

Sinusoidal wave

Answer

Square wave

Answer

Sawtooth wave

Answer

Triangular wave