Ramsay Test Electrical Knowledge 3 — Questions and Answers
Question 1: What is the frequency of standard AC power in the United States?
- 60 Hz (Correct answer)
- 50 Hz
- 120 Hz
- 240 Hz
Correct answer: 60 Hz
Standard US line power alternates at 60 cycles per second.
Question 2: What component stores energy in an electric field?
- Capacitor (Correct answer)
- Inductor
- Resistor
- Transformer
Correct answer: Capacitor
A capacitor stores charge as energy in an electric field between plates.
Question 3: Ohm's law states that voltage equals current multiplied by what?
- Resistance (Correct answer)
- Power
- Capacitance
- Frequency
Correct answer: Resistance
Ohm's law is V = I × R.
Question 4: What does a multimeter set to the continuity setting tell you?
- Whether a complete path exists between two points (Correct answer)
- The exact voltage of a source
- The frequency of a signal
- The power consumed
Correct answer: Whether a complete path exists between two points
Continuity confirms a low-resistance connected path, often with a beep.
Question 5: Which type of motor is most commonly used for large industrial AC applications?
- Three-phase induction motor (Correct answer)
- Brushed DC motor
- Stepper motor
- Universal motor
Correct answer: Three-phase induction motor
Three-phase induction motors are rugged and efficient for industrial loads.
Question 6: What unit measures electric current?
- Ampere (Correct answer)
- Volt
- Watt
- Ohm
Correct answer: Ampere
Current is measured in amperes (amps).
Question 7: Why is a higher gauge number on a wire significant?
- It indicates a thinner wire (Correct answer)
- It indicates a thicker wire
- It indicates higher voltage rating
- It indicates copper purity
Correct answer: It indicates a thinner wire
In AWG, a larger gauge number means a smaller conductor diameter.
Ramsay Test Electrical Knowledge 3
What is the frequency of standard AC power in the United States?