Instruction
- Total number of questions : 20
- Time allotted : 30:00 Minutes:Seconds.
- Each question carry 1 mark, no negative marks.
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- All the best
Automobile Electrical and Electronics [ Question No: 1 To 20 ] :
Which fault does a broken seat heater element produce?
Which change makes a speedometer under read?
Which of the following is not a physical layer characteristic?
Message identifier priority
Bus voltage levels
Terminating resistance
Signal edge timing
Which component terminates a high speed controller area network?
Which architecture allows that coordination?
Which protection applies at excessive engine speed?
Which consequence follows from clearing fault codes before an emissions test?
Which injector property must the controller know?
Which condition allows closed loop fuel control to begin?
Which measurement expresses a lamp's photometric performance?
Which lamp is required to remain lit whenever the vehicle is running in daylight?
Which trigger replaced the contact breaker in early electronic systems?
Which sensing arrangement improves charging accuracy?
Which test checks a stator winding?
Which temperature limit applies when heating a ring gear?
Which component energises the starter solenoid?
Statement I: Cold cranking amps describes starting performance at low temperature.
Statement II: Ampere hour capacity describes starting performance at low temperature.
In the light of the above statements, choose the correct answer.
Which consequence follows from reversed battery polarity?
Which hazard does charging a lead acid battery present?
Which advantage does conductance testing have over load testing?
Total number of questions : 20
Number of answered questions : 0
Number of unanswered questions : 20
Automobile Electrical and Electronics [ Question No: 1 To 20 ] :
Which fault does a broken seat heater element produce?
Your Answer : (Not Answered)
Correct Answer : B
The element fractures where the occupant slides in and out. The last option identifies exactly that location, which makes it a correct and more practical version of the same answer. The shared behaviour explains why these belong together and the differences explain why both exist. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.
Which change makes a speedometer under read?
Your Answer : (Not Answered)
Correct Answer : D
A larger tyre covers more ground per revolution, so the instrument driven from rotation reads low. The last option explains exactly that mechanism, which makes it a correct and more instructive version. Under reading is the unlawful direction. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Reading the definition literally, rather than recalling a summary, avoids the usual confusion.
Which of the following is not a physical layer characteristic?
Message identifier priority
Bus voltage levels
Terminating resistance
Signal edge timing
Your Answer : (Not Answered)
Correct Answer : C
Identifier priority belongs to the protocol rather than to the electrical signalling. Voltages, termination and edge timing are all physical layer matters an oscilloscope can examine. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The shared behaviour explains why these belong together and the differences explain why both exist.
Which component terminates a high speed controller area network?
Your Answer : (Not Answered)
Correct Answer : D
Two terminators prevent signal reflections and give the characteristic sixty ohm reading. The last option describes exactly where they sit and what they measure, which makes it a correct and fuller statement. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Tracing the requirement back to the physical constraint that produces it makes the answer follow. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.
Which architecture allows that coordination?
Your Answer : (Not Answered)
Correct Answer : A
Both units speak in torque, which makes the request meaningful regardless of how the engine achieves it. The last option describes that interface exactly, which makes it a correct and more precise statement. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. The shared behaviour explains why these belong together and the differences explain why both exist.
Which protection applies at excessive engine speed?
Your Answer : (Not Answered)
Correct Answer : B
Cutting fuel is preferred to cutting spark because unburnt fuel would damage the catalyst. The last option describes the graduated implementation used on many engines, which makes it a correct and more detailed version. The shared behaviour explains why these belong together and the differences explain why both exist. Tracing the requirement back to the physical constraint that produces it makes the answer follow. The order in which the effects act is what decides the outcome, so it is worth establishing first.
Which consequence follows from clearing fault codes before an emissions test?
Your Answer : (Not Answered)
Correct Answer : B
Clearing resets the monitors, and a defined drive cycle must be completed before they set. The last option describes exactly the remedy, which makes it a correct statement of what follows. It is a common and avoidable inconvenience. Tracing the requirement back to the physical constraint that produces it makes the answer follow. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. The quantity that varies and the quantity that does not are worth naming before any substitution is attempted.
Which injector property must the controller know?
Your Answer : (Not Answered)
Correct Answer : B
Flow rate and the dead time before the pintle lifts are both needed to convert a fuel mass into a pulse width. Static and dynamic flow are genuinely the formal terms for that characterisation, which makes the last option a correct restatement. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Naming what changes and what stays the same is the reliable route through questions of this shape. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.
Which condition allows closed loop fuel control to begin?
Your Answer : (Not Answered)
Correct Answer : D
The sensor must be at temperature and the engine warm enough for the map to be trusted as a starting point. The last option lists exactly those two conditions, which makes it a correct and specific version of the same answer. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Framing the question as which quantity the change acts upon makes the answer follow without calculation.
Which measurement expresses a lamp's photometric performance?
Your Answer : (Not Answered)
Correct Answer : D
Approval requires minimum and maximum candela at defined points in the beam. Lumens genuinely measure total output and are quoted for bulbs, which makes the last option a real measure used for a different purpose. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Checking which component actually carries the load settles most questions of this kind at once.
Which lamp is required to remain lit whenever the vehicle is running in daylight?
Your Answer : (Not Answered)
Correct Answer : C
New vehicles carry dedicated daytime running lamps that light automatically with the engine. Using dipped beam genuinely satisfies the requirement in most places, which makes the last option a correct and more complete statement. The order in which the effects act is what decides the outcome, so it is worth establishing first. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Checking the units of each quantity catches a wrong formula before the arithmetic begins.
Which trigger replaced the contact breaker in early electronic systems?
Your Answer : (Not Answered)
Correct Answer : D
Reluctor and Hall sensors in the distributor triggered the module without contacts to wear. Crankshaft sensors came with distributorless ignition, which makes the last option correct for a later generation. Optical triggers genuinely were used by some manufacturers. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.
Which sensing arrangement improves charging accuracy?
Your Answer : (Not Answered)
Correct Answer : B
A remote sense wire lets the regulator compensate for the drop along the charging cable and hold the correct voltage at the battery. Sensing at the machine ignores that drop entirely. Fuse box sensing is genuinely used on some vehicles. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The shared behaviour explains why these belong together and the differences explain why both exist.
Which test checks a stator winding?
Your Answer : (Not Answered)
Correct Answer : A
Each phase should show low resistance to the others through the star point and infinity to the housing. Bench testing at speed genuinely is done on a test rig, which makes the second option a real and thorough method. Naming what changes and what stays the same is the reliable route through questions of this shape. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. Most errors here come from carrying across a result from a neighbouring case where it does not hold.
Which temperature limit applies when heating a ring gear?
Your Answer : (Not Answered)
Correct Answer : D
Overheating anneals the teeth and the gear wears out rapidly, so an even heat well below red is used. Red heat is exactly what must be avoided. An oven or a ring burner gives the even heat required. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The shared behaviour explains why these belong together and the differences explain why both exist.
Which component energises the starter solenoid?
Your Answer : (Not Answered)
Correct Answer : B
A relay spares the ignition switch the solenoid current, and on modern vehicles the engine controller commands that relay. Controller commanded starting is now the norm, which makes the last option correct for a current vehicle rather than wrong. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. A symptom that appears under one condition and not another is what narrows the diagnosis quickly.
Statement I: Cold cranking amps describes starting performance at low temperature.
Statement II: Ampere hour capacity describes starting performance at low temperature.
In the light of the above statements, choose the correct answer.
Your Answer : (Not Answered)
Correct Answer : A
Cold cranking amps is a defined cold discharge test, whereas ampere hours describes how much charge the battery stores over a long slow discharge. Confusing capacity with cranking ability leads to fitting the wrong battery. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.
Which consequence follows from reversed battery polarity?
Your Answer : (Not Answered)
Correct Answer : A
Semiconductors conduct heavily in reverse and destroy themselves within seconds, taking control units and the alternator with them. Fuses are far too slow to protect them. It is one of the most expensive errors possible. Checking which component actually carries the load settles most questions of this kind at once. Naming what changes and what stays the same is the reliable route through questions of this shape. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.
Which hazard does charging a lead acid battery present?
Your Answer : (Not Answered)
Correct Answer : B
Charging electrolyses water into hydrogen and oxygen, and a spark near the vents can ignite it violently. Acid mist is genuinely produced as well, which makes the last option a real secondary hazard. Ventilation and no naked flames are the rules. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. The shared behaviour explains why these belong together and the differences explain why both exist. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.
Which advantage does conductance testing have over load testing?
Your Answer : (Not Answered)
Correct Answer : D
A conductance tester injects a small signal and infers plate condition, so it needs no heavy current and can test in situ. Neither method measures capacity directly. Cell faults show in both tests to some degree. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Naming what changes and what stays the same is the reliable route through questions of this shape. A limit that survives making every external component ideal is an intrinsic one, and worth knowing for that reason.
Marks
Total number of questions : 20
Number of answered questions : 0
Number of unanswered questions : 20