Electricity In Automobile — Part 1 MCQs with Explanations
Practice high-yield Automobile Engineering MCQs on Electricity In Automobile — Part 1 with worked academic solutions for PPSC, FPSC, Transport Dept.
Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC, FPSC, Transport Dept
Estimated Time
48 mins
Exam-Level PPSC FPSC Transport Dept
Verified for Commission Syllabus • Oct 14, 2026
40
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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🎉 Set complete! All 40 questions answered.
Question 1 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The negative plates of a lead acid battery has
Correct Answer: Option B — Spongy lead
Detailed Academic Explanation:
Spongy lead is the correct answer to “The negative plates of a lead acid battery has”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 2 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The capacity of a battery is expressed in terms of:
Correct Answer: Option C — Ampere-hour rating
Detailed Academic Explanation:
Ampere-hour rating is the correct answer to “The capacity of a battery is expressed in terms of:”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 3 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
For head lamp circuit fed from terminal on terminal switch we use
Correct Answer: Option C — Blue
Detailed Academic Explanation:
Blue is the correct answer to “For head lamp circuit fed from terminal on terminal switch we use”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 4 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
To develop high voltage for spark plug of petrol engine
Correct Answer: Option D — Ignition coil is installed
Detailed Academic Explanation:
Ignition coil is installed is the correct answer to “To develop high voltage for spark plug of petrol engine”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 5 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The candle power (cp) of parking lights is-
Correct Answer: Option B — 3
Detailed Academic Explanation:
3 is the correct answer to “The candle power (cp) of parking lights is-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 6 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The controller area network (CAN) is used to
Correct Answer: Option C — Share information between the different ECU's
Detailed Academic Explanation:
Share information between the different ECU's is the correct answer to “The controller area network (CAN) is used to”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 7 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The frequency of flashing light per minute in a turn indicator is about
Correct Answer: Option B — 80
Detailed Academic Explanation:
80 is the correct answer to “The frequency of flashing light per minute in a turn indicator is about”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 8 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
It is commonly belived that a storage battery stores the . . . . . . . . but it is not true.
Correct Answer: Option A — Electric energy
Detailed Academic Explanation:
Electric energy is the correct answer to “It is commonly belived that a storage battery stores the . . . . . . . . but it is not true.”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 9 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
In magnet opposite poles are-
Correct Answer: Option A — Attractive
Detailed Academic Explanation:
Attractive is the correct answer to “In magnet opposite poles are-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 10 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
In an alternator, the magnetic field is produced in the
Correct Answer: Option A — Rotor
Detailed Academic Explanation:
Rotor is the correct answer to “In an alternator, the magnetic field is produced in the”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 11 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
To check for the excessive voltage drop on insulated side of the alternator's output circuit, the voltmeter is connected between the
Correct Answer: Option D — Battery positive(+ve) terminal and the insulated output terminal of the alternator
Detailed Academic Explanation:
Battery positive(+ve) terminal and the insulated output terminal of the alternator is the correct answer to “To check for the excessive voltage drop on insulated side of the alternator's output circuit, the voltmeter is connected between the”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 12 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Battery box is made up of-
Correct Answer: Option B — Hard rubber
Detailed Academic Explanation:
Hard rubber is the correct answer to “Battery box is made up of-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 13 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which of the following pair(s) is not properly matched?
Correct Answer: Option B — Blinkers ⇔ 12 V, 18W/18W
Detailed Academic Explanation:
Blinkers ⇔ 12 V, 18W/18W is the correct answer to “Which of the following pair(s) is not properly matched”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 14 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The number of diodes used in alternator is/are
Correct Answer: Option D — 6
Detailed Academic Explanation:
6 is the correct answer to “The number of diodes used in alternator is/are”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 15 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Brown colour is used to indicate-
Correct Answer: Option D — All of these
Detailed Academic Explanation:
All of these is the correct answer to “Brown colour is used to indicate-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 16 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
. . . . . . . . are used to indicate the direction in which the vehicle is to tum.
Correct Answer: Option A — Direction signal direction
Detailed Academic Explanation:
Direction signal direction is the correct answer to “. . . . . . . . are used to indicate the direction in which the vehicle is to tum.”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 17 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Battery is used in which of the phenomenon-
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “Battery is used in which of the phenomenon-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 18 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
. . . . . . . . are at the rear of the car and becomes on when brakes are aiming.
Correct Answer: Option B — Stop light
Detailed Academic Explanation:
Stop light is the correct answer to “. . . . . . . . are at the rear of the car and becomes on when brakes are aiming.”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 19 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
During battery charge, the electrolyte becomes
Correct Answer: Option D — Heavier
Detailed Academic Explanation:
Heavier is the correct answer to “During battery charge, the electrolyte becomes”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 20 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
If the engine cranks too slow to start, the problem may be caused by
Correct Answer: Option A — Engine problem
Detailed Academic Explanation:
Engine problem is the correct answer to “If the engine cranks too slow to start, the problem may be caused by”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 21 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The state of charge of battery that has a specific gravity of 1.190 at 80°F (26.7°C) means
Correct Answer: Option B — About $${1 \over 2}$$ charged
Detailed Academic Explanation:
About $${1 \over 2}$$ charged is the correct answer to “The state of charge of battery that has a specific gravity of 1.190 at 80°F (26.7°C) means”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 22 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
For all ground wire we use the colour-
Correct Answer: Option A — Black
Detailed Academic Explanation:
Black is the correct answer to “For all ground wire we use the colour-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 23 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
While charging a battery, the temperature of the electrolyte should not exceed
Correct Answer: Option C — 54.4°C
Detailed Academic Explanation:
54.4°C is the correct answer to “While charging a battery, the temperature of the electrolyte should not exceed”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 24 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The main lights are-
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “The main lights are-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 25 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The purpose of serial data communication is to
Correct Answer: Option C — Reduce the number of wires between the ECU's by allowing the information sharing
Detailed Academic Explanation:
Reduce the number of wires between the ECU's by allowing the information sharing is the correct answer to “The purpose of serial data communication is to”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 26 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
A . . . . . . . . is an electrical one-way check valve that will allow current to flow in one direction only.
Correct Answer: Option A — Diode
Detailed Academic Explanation:
Diode is the correct answer to “A . . . . . . . . is an electrical one-way check valve that will allow current to flow in one direction only.”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 27 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
When electrolyte is ready then its specific gravity should be-
Correct Answer: Option B — 1000
Detailed Academic Explanation:
1000 is the correct answer to “When electrolyte is ready then its specific gravity should be-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 28 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The ratio between the number of teeth on the starter motor pinion gear and the engine flywheel ring gear is about
Correct Answer: Option C — 1 to 15
Detailed Academic Explanation:
1 to 15 is the correct answer to “The ratio between the number of teeth on the starter motor pinion gear and the engine flywheel ring gear is about”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 29 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Charging dynamo intermittently or charging less is due to
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “Charging dynamo intermittently or charging less is due to”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 30 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which of the following is the component of lead acid battery?
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “Which of the following is the component of lead acid battery”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 31 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
In earth return system which terminal of the battery is earthed to the body or chassis which is made of metal-
Correct Answer: Option A — Negative
Detailed Academic Explanation:
Negative is the correct answer to “In earth return system which terminal of the battery is earthed to the body or chassis which is made of metal-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 32 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The negative terminal post on a top terminal battery is
Correct Answer: Option A — Smaller than positive terminal post
Detailed Academic Explanation:
Smaller than positive terminal post is the correct answer to “The negative terminal post on a top terminal battery is”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 33 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
When the negative pole of one battery is connected to the positive pole of the other battery, the batteries are said to be connected in-
Correct Answer: Option B — Series
Detailed Academic Explanation:
Series is the correct answer to “When the negative pole of one battery is connected to the positive pole of the other battery, the batteries are said to be connected in-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 34 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which of the following has cable size $${{14} \over {0.012}}$$ ?
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “Which of the following has cable size $${{14} \over {0.012}}$$”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 35 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Before the battery is put on charge-
Correct Answer: Option C — Both
Detailed Academic Explanation:
Both is the correct answer to “Before the battery is put on charge-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 36 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The function of a generator is that it
Correct Answer: Option B — Changes mechanical energy into electrical energy
Detailed Academic Explanation:
Changes mechanical energy into electrical energy is the correct answer to “The function of a generator is that it”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 37 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The main purpose of a thermostat in an engine cooling system is to
Correct Answer: Option A — Allow engine to warm-up quickly
Detailed Academic Explanation:
Allow engine to warm-up quickly is the correct answer to “The main purpose of a thermostat in an engine cooling system is to”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 38 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which of the following light contains 3 cp?
Correct Answer: Option D — All are correct
Detailed Academic Explanation:
All are correct is the correct answer to “Which of the following light contains 3 cp”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 39 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
In automobiles the wires are connected in which of the following way-
Correct Answer: Option C — Both the ways
Detailed Academic Explanation:
Both the ways is the correct answer to “In automobiles the wires are connected in which of the following way-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
Question 40 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
End shields are made of-
Correct Answer: Option C — Both of them
Detailed Academic Explanation:
Both of them is the correct answer to “End shields are made of-”. This question is standard in competitive examination syllabi for Electricity In Automobile.
💡Key Conceptual Anchor:Electricity In Automobile
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In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.