![]() |
|
Vehicle ElectricsModule 1A sound knowledge of electrical principles and circuit testing techniques is essential for carrying out successful fault finding of modern vehicle electrical systems. If you are unsure as to whether Vehicle electrics module 1 is a course for you, try answering the following basic questions: 1) On a wiring diagram, what symbol is usually used to identify a component with an integrated control circuit? A) A capacitor. B) A variable resistor. C) A diode. D) A transistor. 2) What is the typical current rating across the normally closed (NC) contacts of a 5 pin twin pole switching ISO micro relay? A) 40 Amps. B) 70 Amps C) 15 Amps. D) 20 Amps. 3) Which of the following open circuit voltage test readings taken across the battery terminals indicates an approximate battery state of charge of 50%? A) 12.2 Volts B) 12.4 Volts C) 10.5 Volts D) 12.7 Volts 4) On a wiring diagram, which electrical circuit group is represented by DIN number 53? A) Headlamps and side lamps circuit. 5) Which of the following statements is not true regarding testing a battery using a digital battery analyser? A) The digital battery analyser tests the battery’s state of charge and also its ability to deliver a heavy current. B) The digital battery analyser tests the electrical conductance of the battery cell plate material. C) The battery state of charge must be at least 75% before carrying out a test using a digital battery analyser. D) The digital battery analyser gives an almost instantaneous test result and does not overload the battery. 6) In an electrical circuit, what is the normal maximum acceptable voltage that should be present on the earth wire if the circuit is in good condition and functioning normally? A) Maximum 300mV. B) Maximum 0.030V. C) Maximum 0.5 Volts. D) Maximum 1 Volt. 7) How is the regulator energized on an alternator with digital field monitoring? A) It receives a voltage supply at terminal 61 via the charge warning indicator lamp when the ignition is switched on. B) It receives a voltage supply at terminal 30 via the charge warning indicator lamp when the ignition is switched on. C) It receives a voltage supply from the engine ECM when the ignition is switched on. D) It is energized via a pulsed earth from the engine ECM when the ignition is switched on. |
Motor Industry Professional Technical Services |
|||||||||||||||||||
|
||||||||||