Session 8: Circuit Diagram of Ignition System and Checking of Ignition Circuit
Module 5: Auto Electrical System
Textual Question-Answers
Check Your Progress
Fill in the blanks
1. In a distributor less ignition system, the Engine Control Unit(ECU) controls the transistors that break the …………… side of thecircuit to generate the spark.
Ans: primary
2. A transistorized ignition system uses a …………… to control theon-off cycle of the ignition coil’s primary winding.
Ans: transistor
3. One advantage of a computerized ignition system is its ability toprecisely control the ignition ………………. leading to improvedefficiency and emissions.
Ans: timing
4. In a coil ignition system with CB point, the component responsiblefor opening and closing the circuit is the……………..
Ans: contact breaker point
5. The secondary winding of an ignition coil induces voltage into the………………. circuit.
Ans: secondary
6. One of the benefits of a transistorized ignition system is that ithas no and reduced moving parts, which contributes to longer component……………. and reduced maintenance.
Ans: life
Multiple Choice Questions
1. In a coil ignition system with CB point, which component isresponsible for opening and closing the circuit to generate the spark?A) Spark Plug
B) Rotor
C) Contact Breaker Point
D) Ignition Coil
Ans: C) Contact Breaker Point
2. Which electronic component in a transistorized ignition system isresponsible for controlling the ignition coil’s primary winding?A) Spark Plug
B) Camshaft
C) Distributor Cap
D) Primary Transistor
Ans: D) Primary Transistor
3. What advantage does a computerized ignition system offer overtraditional systems?
A) Longer spark plug lifespan
B) Elimination of the battery
C) Improved control of ignition timing
D) Higher fuel consumption
Ans: C) Improved control of ignition timing
4. In a distributor less ignition system, what component controlsthe transistors to generate the spark?
A) Camshaft
B) Distributor Cap
C) Engine Control Unit (ECU)
D) Contact Breaker Point
Ans: C) Engine Control Unit (ECU)
5. What does a transistor in an ignition system function as?A) Relay
B) Switch
C) Battery
D) Spark Plug
Ans: B) Switch
6. What does the secondary winding of an ignition coil induce voltageinto?
A) Battery
B) Camshaft
C) Primary Transistor
D) Secondary Circuit
Ans: D) Secondary Circuit
Activity
1. Make a list of components of coil ignition system of a vehicle.
Ans:
1. Component: Battery
2. Component: Ignition coil
3. Component: Contact breaker point
4. Component: Distributor
2. Prepare a poster showing coil ignition system of a vehicle.
Ans: The poster should show the battery, ignition switch, ignition coil,
contact breaker point, condenser, distributor, spark plug, and connecting wiresclearly labeled to explain the working of the coil ignition system.
Try yourself
