DESIGN AND CONSTRUCTION OF POLICE SIREN

  • : Ms Word, Ms Word Format
  • : 70 Pages
  • : ₦3,000 | $25 | ₵60 | Ksh 2720
  • : 1-5 Chapters
  •  
  • Click to DOWNLOAD Materials
DESIGN AND CONSTRUCTION OF POLICE SIREN
ABSTRACT
Variable-tone siren is a type of siren system that generates variable audible sounds. It consists of electronics components such as 555 timer ICs, D.C supply, and output transducer (loudspeaker) which are assembled and interconnected to generate an oscillating signal. The 555 timer IC is connected in a stable mode that generates an oscillating signal at its output which is used to trigger the second 555 timer IC and the resulting output is transformed into a continuous sound of varying frequency. This is caused by the variable resistor connected to the second555 timer IC. With the aid of loudspeaker, this oscillating signal can be heard. The oscillating variable sound finds applications in hospital ambulances, police vans and factories. It can also be used in the construction of burglar alarm and light flasher.

Title Page———i

Certification——–ii

Dedication———iii

Acknowledgement——-iv

Abstract ———vi

Table of Content——–vii

 

Chapter One

1.0 Introduction ——-1

1.1 Statement of Problem——4

1.2 Purpose of the Study——5

1.3 Significance of Study——8

1.4 Limitation——–9

1.5 Scope of Study——-11

 

Chapter Two

2.0 Review of Related Literature —-12

2.6 Summary of Literature Review—- 19

 

Chapter Three

3.0 Research Methodology and Procedure—22

3.1 Population ——–22

3.2 Sample and Sampling Technique—-22

3.3 Validation of the Instrument —-23

3.4 Reliability of the Instrument —–23

3.5 Data Analysis——-23

 

Chapter Four

4.0 Presentation and Discussion of Result—24

4.1 Analysis and interpretaion of Data—25

4.2 Discussion of Results——38

 

Chapter Five

5.0. Summary, Conclusion, and Recommendation  –40

5.1 Summary——–40

5.2 Conclusion——–41

5.3 Recommendation——42

References ———45

Appendix 1——–47

Appendix ———50

DESIGN AND CONSTRUCTION OF POLICE SIREN

 

Sharing is caring!

Leave a Reply