MOSHOOD ABIOLA POLYTECHNIC, ABEOKUTA
SCHOOL OF ENGINEERING
ELECTRICAL/ ELECTRONIC ENGINEERING DEPARTMENT
FIRST SEMESTER EXAMINATION, 2021/2022 SESSION
COURSE CODE: EEC 125
COURSE UNIT: 2
COURSE TITLE: WORKSHOP PRACTICE II
CLASS: ND II (FT & PT) ELECTCTRICAL & ELECTRONICS ENG.
TIME ALLOWED: 2 HRS
INSTRUCTION: ATTEMPT FOUR QUESTIONS IN ALL
Question 1
a. Define “Electric Shock”
b. State five Precautions necessary in avoiding electric Shock
c. Explain the mouth resusitation method of artificial respiration
d. Describe how the human body can become part of an electric circuit(
Question 2
(5marks)
(5Marks)
(10marks)
5Marks)
a.
b.
c.
(7Marks)
(8Marks)
State seven Factors to be considered in the choice of a wiring system
State four Differences between duct and trunking system of Wiring
Describe the following system of Wiring
i. Cleat Wiring
ii. Conduit Wiring
iii. Lead sheath
Question 3
Write Short Notes on the following
i.Soldering
ii.Soft soldering
iii. Hard soldering
b. Briefly Explain the process of soldering
Question 4
(10Marks)
a.
a. State the differences between Conductors,Insulations and Semiconductors
b. List three concucting and Insulating materials respectively
c. State 5 properties of Conductor
Question 5
a.
b.
(15Marks)
(10marks)
(5marks)
(5Marks)
(5marks)
Describe with supporting diagrams the following test with necessary permissible limits
i. Insullation tests between Conductors
ii. Polarity verification Test
iii. Earth continuity Test
iv. Insullation Tests between earth and conductors
(20Marks)
Describe the Meggar
(5Marks)
Question 6
a.
b.
c.
List five testing Instrument stating their uses.
(5Marks)
List ten basic safety requirement in a workshop
(10Marks)
Differentiate between the distribution of power in a single phase and three phase four
wire system
(10Marks)