Trade of Motor Mechanic - eCollege

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Module 4 - Unit 1 Trade of Motor Mechanic - Phase 2 Course Notes 8 Basic Ignition Systems Q6: In electronic ignition the high tension spark is produce when the reluctor teeth: (Tick one box only) 1. Are opposite the stator teeth 2. Approach the stator teeth . Leave the stator teeth 4. Ignition switch turns on Q7 A low inductance coil primary winding has: (Tick one box only) 1. Low resistance and higher current draw 2. Low resistance and low current draw . Resistance so low it cannot be measured 4. High resistance and high current draw Q8: In contact breaker ignition systems, an excessive distributor dwell angle can be corrected by: (Tick one box only) 1. Decreasing the contact gap 2. Advancing the ignition timing . Increasing the contact 4. Retarding the ignition timing Q9: Technician A says the coil can produce more voltage at high speeds than at low speeds. Technician B says it can produce consistently high voltages across the engine speed range. Who is correct? (Tick one box only) 1. Technician A 2. Technician B . Both Technician A and Technician B 4. Neither Technician A nor Technician B Q10: The names of the windings in the ignition coil are the: (Tick one box only) 1. Big and small 2. Large and small . Primary and secondary 4. High-tension and low-tension Revision 2.0 July 2007
Module 4 - Unit 1 Basic Ignition Systems Trade of Motor Mechanic - Phase 2 Course Notes Q11: A ballast resistor fitted to a coil ignition system is bypassed during engine cranking to ensure that: (Tick one box only) 1. Ignition timing is advanced to aid starting 2. Maximum current is supplied to the starter motor . Maximum available battery voltage is applied to the coil 4. It is not burned out by the high starter current Q12: In contact breaker ignition systems, timing can be advanced relative to engine speed by a: (Tick one box only) 1. Centrifugal advance mechanism 2. Scissors type distributor drive gear . Ballast resistor 4. Moveable breaker plate Q13: A vacuum advance unit advances ignition timing by moving the distributor base plate: (Tick one box only) 1. At wide throttle openings only 2. Against the direction of distributor shaft rotation . According to engine speed 4. In the direction of distributor shaft rotation Q14: Technician A says ignition systems equipped with Hall Effect sensors do not require a ballast resistor to regulate primary current. Technician B says these systems do need a ballast resistor or resistance wire. Who is correct? (Tick one box only) 1. Technician A 2. Technician B . Both Technician A and Technician B 4. Neither Technician A nor Technician B 9 Revision 2.0 July 2007
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Trade of Motor Mechanic - eCollege

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