Ramsay Test Technical Aptitude & Knowledge 3 ā Questions and Answers
Question 1: In a simple series circuit with three resistors, how does the current compare at each resistor?
- It is the same through all three (Correct answer)
- It is largest at the first resistor
- It splits evenly among them
- It is zero at the last resistor
Correct answer: It is the same through all three
In a series circuit the same current flows through every component.
Question 2: Using Ohm's law, what current flows when 12 volts is applied across a 4 ohm resistor?
- 3 amps (Correct answer)
- 48 amps
- 0.33 amps
- 8 amps
Correct answer: 3 amps
Current equals voltage divided by resistance: 12 / 4 = 3 amps.
Question 3: What is the total resistance of two 10 ohm resistors connected in parallel?
- 5 ohms (Correct answer)
- 20 ohms
- 10 ohms
- 100 ohms
Correct answer: 5 ohms
Two equal resistors in parallel give half the value, so 10/2 = 5 ohms.
Question 4: A device that converts electrical energy into rotational mechanical motion is called a:
- Motor (Correct answer)
- Generator
- Transformer
- Capacitor
Correct answer: Motor
An electric motor turns electrical energy into mechanical rotation.
Question 5: A transformer with more turns on the secondary than the primary coil will:
- Step up the voltage (Correct answer)
- Step down the voltage
- Convert AC to DC
- Increase the frequency
Correct answer: Step up the voltage
More secondary turns than primary raises (steps up) the output voltage.
Question 6: What is the primary function of a fuse in a circuit?
- To break the circuit during overcurrent (Correct answer)
- To store electrical charge
- To increase voltage
- To smooth out current ripple
Correct answer: To break the circuit during overcurrent
A fuse melts and opens the circuit when current exceeds a safe level.
Question 7: Power dissipated by a 2 amp current through a 5 ohm resistor is:
- 20 watts (Correct answer)
- 10 watts
- 2.5 watts
- 40 watts
Correct answer: 20 watts
Power equals current squared times resistance: 2Ā² Ć 5 = 20 watts.
Ramsay Test Technical Aptitude & Knowledge 3
In a simple series circuit with three resistors, how does the current compare at each resistor?