Cork Institute of Technology
Bachelor of Engineering in Building Services Engineering – Award
(National Diploma in Engineering in Building Services Engineering – Award)
(NFQ – Level 7)
Autumn 2005
Building Services Facilities Engineering (Electrical) – Paper 1
(Time: 3 Hours)
Instructions
Answer FIVE questions.
All questions carry equal marks.
Examiners: Mr. S. Boljevic
Dr. N.J. Hewitt
Mr. T. Dunne
Q1. Relative to the lightning protection clearly explain with aid of a neat sketch the following
terms:
(a) Step and Touch Voltage (5 marks)
(b) Side Flashing (5 marks)
(c) Inductive Coupling (5 marks)
(d) Resistive Coupling (5 marks)
Q2. (a) Relative to fire alarm system, define and explain the following system P2 and L2, giving
in each case a practical example. (4 marks)
(b) Relative to fire alarm system, state and explain factors which are taken into consideration
for the zoning of the building. (6 marks)
(c) Relative to electronic security system explain operation of the following:
(i) Passive infrared intruder detector (5 marks)
(ii) Tamper circuit (5 marks)
Q3. Outline and clearly explain operation and selection of:
(a) Current measuring transformer (10 marks)
(b) Voltage measuring transformer (10 marks)
