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Basic Electronics(Cisy 104) (Dcis 102) Question Paper

Basic Electronics(Cisy 104) (Dcis 102)

Course:Computer Science And Business

Institution: Kenya Methodist University question papers

Exam Year:2013

TIME : 2 HOURS

INSTRUSTIONS:
SECTION A: compulsory
Question One
Distinguish between the common base circuit and common emniiter circuit of the transfer.
(2mks)
Briefly describe the following
Electronics.
(1mk)
Integrated circuits
(2mks)
CMOS
(2mks)
State the applications of Bi-polar function transistors.
(4mks)
Outline the electronic instruments used to measure the following
Voltage
Current
Resistance
(3mks)
Differentiate between direct and alternating current stating their implementation in electronics circuits.
(2mks)
Outline the atomic structure of silicon as a semi-conducts.
(4mks)

SECTION B: Answer any two questions.
Question Two
Define a transistor.
(2mks)
Compare and contrast Bi-polar functions and field effect transistors. (6mks)
State and explain three applications of diodes in electronic systems. (6mks)
With the aid of a sine wave diagram as displayed by an oscilloscope. Discuss the following properties of an electrical signal.
Amplitude
Peak – peak
Time period
Frequency

Question Three
What is an electronic printed circuit board?.
(2mks)
Discuss the following electronic circuit component with the aid of diagrams stating their functions.
(8mks)
Capacitors
Resistors
Inductors
Transformers
With the aid of a diagram, explain the following terms as used during the process of forming a PN junction.
(10mks)
Diffusion current
Drift current
Depletion layer

Question Four
State the aim of doping semi-conductors in electronics.
(3mks)
Explain the effects of temperature on conduction of the following
Metals
(5mks)
Semi-conductors
(5mks)
Explain what the electrical terms voltage, current and resistance mean using your own words. While stating their units of measurement. (6mks)
Define the process of biasing.
(1mk)

Basic Electronics(Cisy 104) (Dcis 102) Question Paper

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