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Test an automobile battery for its serviceability. OBJECTIVE The objective of this practical is to perform different test on battery. By this practical student get knowledge about testing, maintenance & its service. INTRODUCTION The battery is the heart of the automobile electrical system. The battery serve to store electric energy when there is little or no damage for current acts a secondary source of a electrical when the engine is hot running alternatively to meet full requirement of the load on the system. A wide range of batteries varying from 5 to 200hr. Capacity is necessary to meet the requirement of motor industries.

Determine absolute viscosity of diesel fuel using u- tube viscometer Kinematic viscosity is absolute units. The determination is made in a U- Tube viscometer as illustrated in figure. Five tubes, numbered from 0 to 4, are specified and their dimensions are given. The ranges covered are: No. 0-0.5 to 2.0, No. 1-1.5 to 6.0, No. 2-5.4 to 43, No. 3-32 to 260 and No. 4-190 to 1500 centistokes respectively.

Demonstrate cable size, colour code, wiring and symbols used in auto wiring. OBJECTIVE To acquire detailed knowledge about cable size, their colour codes, wiring and different symbols. INTRODUCTION The wiring of present day automobiles has become quite complex because of a number of additional electrical equipment and accessories. However, with the use of coloured cables, wiring harness, plastic fibre optics, printed circuits and improved cable connections, wiring installation has been simplified as possible.