PART – 1 (5 marks)

Descriptive Questions

INSTRUCTIONS:

Use diagrams, if necessary.

Q1.            a)   Describe the steps in testing a bipolar junction transistor with a digital                                 [5]

multimeter.

b)   If necessary sketch how the digital multimeter is connected to the transistor.

PART – 2 (7.5 marks)

Long Answer Questions

INSTRUCTIONS:

Your answers must be rephrased from whatever references or sources you used. Use diagrams, if necessary.

Q2.  Name the safety precautions when using a voltmeter.

[2]

Q3.    Draw neatly the block diagram of the circuit shown in Figure 1 and explain how the [2.5] circuit works.

PART – 3 (7.5 marks)

Problem Solving and Circuit Analysis

INSTRUCTIONS:

Show your step-by-step solutions. Use diagrams, if necessary.

Q5.    What capacitor must be connected in series with a 30 µF capacitor for the equivalent [2] capacitance to be 12 µF?

Q6. Determine the voltmeter reading in Figure 3, if the 4.7 kΩ resistor is open. What is the reading in Voltmeter-1 and in Voltmeter-2?

Q7.    Analyze the circuit carefully in Figure 4 and determine the corresponding readings of [3] the ammeter when it is connected to A, B, C and D.

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