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INTERMEDIATE
VOCATIONAL COURSE
FIRST YEAR
ELECTRICAL ENGINEERING LAB & COMPUTERS LAB
FOR THE COURSE OF
RURAL ENGINEERING TECHNICIAN
STATE INSTITUTE OF VOCATIONAL EDUCATION &
BOARD OF INTERMEDIATE EDUCATION
GOVERNMENT OF ANDHRAPRADESH HYDERABAD
2005
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AUTHOR
G. KOTI CHANDRA MOULI
A.M.I.E.,(Mech.,)
J.L. in R.E.T.
GOVERNMENT JUNIOR COLLEGE,
PINDIPROLU,
KHAMMAM DISTRICT
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INDEX
Sl.No.
Chapter
Page No.
1)
Electrical Circuits
01
2)
D.C. Machines
10
3)
Battery
13
4)
Wiring
14
5)
Overhaul the appliances
20
6)
Windows Operating System
23
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ELECTRICAL ENGINEERING LAB & COMPUTERS LAB
1. ELECTRICAL CIRCUITS
1.1
DETERMINATION OF VOLTAGE & CURRENT IN SERIES
AIM: To determine the Voltage & Current in series
TOOLS & EQUIPMENT REQUIRED :-
1) Screw Driver
2) Cutting Plier
3) Tester
4) Test Lamp
5) Volt Meter
6) Ammeter
7) Fuse Box
MATERIAL REQUIRED :-
1) Wooden Batten
2) Electric conductor single lead
3) Nails
4) Bulb Holders
5) Bulbs
PROCEDURE :
1.
Fix the wooden batten firmly on a table.
2.
Run the conductor on batten with the help of nails and link
clips,
3.
Arrange bulb holders in the circuit as shown in figure.
4.
Fix bulbs in bulb holders.
5.
Give power supply to the circuit.
6.
Fix the fuse box between A & B.
7.
TO KNOW VOLTAGE :
A)
To know Voltage between A & B connect Voltmeter’s leads
between A & B we can read voltage directly in voltmeter.
B]
To know voltage between any two points the same procedure
can be adopted.
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C]
To know the total circuit voltage connect two ends of voltmeter
at end points of the circuit.
8.
TO KNOW CURRENT:
A]
To know the current in the circuit remove fuse wire in the fuse box.
B)
Connect the two ends of Ammeter at two terminals of Ammeter and we can
directly read in Ammeter im Amperes.
PRECAUTIONS : 1) Connections in the total apparatus should be rigid.
2) Use gloves and plastic slippers always because total apparatus is
without insulation.
1.2
DETERMINATION OF VOLTAGE & CURRENT I