21. The state of charge of battery that has a specific gravity of 1.190 at 80°F (26.7°C) means
22. For all ground wire we use the colour-
23. While charging a battery, the temperature of the electrolyte should not exceed
24. The main lights are-
25. The purpose of serial data communication is to
26. A . . . . . . . . is an electrical one-way check valve that will allow current to flow in one direction only.
27. When electrolyte is ready then its specific gravity should be-
28. The ratio between the number of teeth on the starter motor pinion gear and the engine flywheel ring gear is about
29. The main task of a battery in automobiles is to
30. Charging dynamo intermittently or charging less is due to
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