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1. Which of the following is NOT a passive component?

• Transistor
• Inductor
• Capacitor
• Resistor

2. The unit of inductance is:

• ohm
• watt
• volt
• henry

3. The primary purpose of a transformer is to:

• increase current levels
• change voltage levels
• store electrical energy
• convert AC to DC

4. Which of the following is a characteristic of a DC motor?

• Converts alternating current into thermal energy
• Converts direct current into mechanical energy
• Generates electrical energy from mechanical motion
• Uses batteries to store energy for later use

5. The difference between a diode and a Zener diode is:

• A diode allows current in both directions; a Zener diode does not allow reverse current.
• A diode can only operate at high frequencies; a Zener diode operates at low frequencies.
• A diode is used for voltage regulation; a Zener diode is used for signal amplification.
• A diode allows current in one direction; a Zener diode allows reverse current at a specific voltage.

6. What will the following code output?

python

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print(2 * 'Hello' + 'World')

• HelloHelloWorld
• WorldHelloHello
• HelloWorldHello
• HelloHelloHello

7.Which of the following is the correct syntax to create a set in Python?

• set([1, 2, 3]) or {1, 2, 3}
• set(1, 2, 3)
• list(1, 2, 3)
• {1; 2; 3}

8.What does the len() function in Python return?

• The first item in a list.
• The type of an object.
• The total length of a string.
• The number of items in an object.

9. What is the output of the following code?

python

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x = [1, 2, 3] x.append([4, 5]) print(len(x))

• 3
• 5
• 6
• 4

10. What will be the result of the following code?

python

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def foo(a, b=10): return a + b print(foo(5))

• 5
• 15
• 10
• 20