SOS Mechanic Certificate – Electrical Complete Guide

SOS Mechanic Certificate – Electrical Complete Guide Electrical Systems After replacing a battery, do you need to wait for a period of time before testing the system? ⚡️ No, there is no need to wait When the blower motor speed decreases, what happens to the voltage drop across the resistance block? It increases What should you do first when replacing a junction block or fuse? Unlock the battery ground cable What is the correct polarity of the voltage applied to the electromagnetic coils of a DC motor? A commutator What should you set your volt meter to when performing a volt drop test? 3 volts What does a reading of 0.8 volts on a volt meter indicate? Excessive resistance Diagrams and Symbols What does a dot represent in a conventional wiring diagram? A splice What type of component is represented by the symbol at the right? A relay Measurement and Testing What type of equipment must be connected parallel when measuring current? An am-meter What can damage electrical components by electrical discharge? All of the above What type of meter should you use to diagnose onboard computer issues? A high-independence digital diagnostic instrument Circuits and Wiring What type of circuit protection device can be tested with all of the above methods? Fusable link What would happen if a horn relay is stuck closed? The horn would constantly blow