Cee 0104 Electrical Installation Question Paper
Cee 0104 Electrical Installation
Course:Certificate In Electrical Engineering
Institution: Meru University Of Science And Technology question papers
Exam Year:2011
QUESTION ONE – 30 MARKS
a. List two electronics component that are necessary for construction of an amplifier. (2 Marks) b. With the aid of a block diagram explain the function of an amplifier. (2 Marks) c. Draw a single stage amplifier circuit and explain the functions of each component of the amplifier. (5 Marks) d. Define the following terms: i. Over current (2 Marks) ii. Overload current (2 Marks) iii. Current rating of a fuse (2 Marks) iv. Fusing current (2 Marks)
e. Explain the function of a multimeter in electronics construction. (3 Marks) f. Explain two ways of identifying the porality of a diode. (3 Marks) g. State the function of a rectifier. (1 Marks) h. With aid of a diagram, explain the operation of a bridge rectifier. (6 Marks)
QUESTION TWO – 15 MARKS
a. A Zener diode stabilization circuit has Rs = 25O Vz = 18v, RL = 180O. If the Vin can vary from 20v + 30v, find: i. Minimum and maximum current through the Zener diode (4 Marks) ii. The minimum and maximum power dissipated in the diode. (2 Marks)
b. Explain five monitor faults and how they can be corrected. (5 Marks) c. Explain the function of the following devices giving their difference in operation. i. Fuse (2 Marks) ii. Circuit breaker (2 Marks)
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QUESTION THREE – 15 MARKS
a. Explain the function of the following equipment as used in electronics circuit design and trouble shooting. i. Oscilloscope (3 Marks) ii. Signal function generator (3 Marks)
b. Draw a basic series regulator and explain its operation. (7 Marks) c. Explain the function of zener diode in voltage regulation. Use Zener diode voltage stabilizer circuit. (2 Marks)
QUESTION FOUR – 15 MARKS
a. Given the diagram below find: (7 Marks)
VB, IE, VC,VCE
(7 Marks) b. List two types of fuses. (2 Marks) c. With the aid of a diagram, explain the operation of a cathode ray tube. (6 Marks)
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