Karnataka 2nd PUC Question Paper 2025 Answer Key Automobile

Government of Karnataka
Karnataka Secondary Education Examination Board

Question Paper
ANSWER KEY

1
KARNATAKA SCHOOL EXAMINATION AND ASSESMENT BOARD
II PUC EXAM-1, MARCH-2025
SUBJECT: 63-AUTOMOBILE MODEL ANSWERS
PART-A
Q.N ANSWERS MARKS
O
I. CHOOSE THE CORRECT ANSWER 10x1=10
1) b) Listening 1
2) d) Ctrl + X 1
3) c) Manufacturer 1
4) a) 15000 1
5) b) Clutch and propeller shaft 1
6) d) Small 1
7) c) Wheel balancer 1
8) a) Head lamps 1
9) b) Three 1
10) d) Battery 1
PART-B
II. ANSWER THE FOLLOWING QUESTIONS (ANSWER ANY 10) 10x2=20
11) Stress is a state of feeling upset annoyed and hopeless is called stress. 2
12) 1. Microsoft Excel
1 2
2. Libre office calc 1
3. Google sheet (Any two)
13) 1. The manufacturers develop service manual which gives clear cut
ideas of their product. 1
2. The service manual helps to teach the technicians to work on the 2
vehicle systematically to solve the problems as well as to provide 1
service to maintain originality.
14) 1. ECM ½
2. Sensors ½
3. Actuators ½ 2
4. Processor ½

IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

2

15)

2

Diagram-2 marks
16) 1. Automated manual transmission (AMT) 1
2. Continuously variable transmission (CVT) 1 2
17) 1. To transfer the engine power to wheels. 1
2. To transmit the power to the wheels in different speed while turning. 1 2
18) 1. Overloading ½
2.Road conditions ½
3. Broken casing ½
4. Leakage of fluid ½ 2
5. Worn out (any four)
19) Suspension systems are important for on road safety performing the
function of keeping the tyres evenly connected with the road and 2
maintaining a vertical load on the tyres.
20)

2

Diagram-2 marks
Leaf spring
21) Oscilloscope:
1. Oscilloscope is very useful in diagnosing many electrical problems 1 2
quickly and accurately very fast reacting voltmeter that reads and
display voltage. 1
2. It reacts very fast and gives reading or faults about electrical related
reading in automobile electric system.
22) 1. The climate control system (Heating, Ventilation and Air- 1
Conditioning (HVAC) system) is designed to provide to comfort for 2
the driver and passengers. 1
2. It controls system to maintain in car air temperature and humidity.
IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

3
23) Electrical testing equipment’s
• Ammeter ½
• Jumper wires ½ 2
• Test lights ½
• Multimeter ½
• Voltmeter
• Ohmmeter (Any four)
PART-C
III. ANSWER THE FOLLOWING (ANSWER ANY SIX) 6x3=18
24) 1.Service entrepreneurs ½
2. business entrepreneurs ½
3. Industrial entrepreneurs ½
4. Agricultural entrepreneurs ½
3
5. Technical entrepreneurs ½
6. Non-technical entrepreneurs ½
7. Professional entrepreneurs
8. IT entrepreneurs (Any six)
25) 1. Reducing scrap materials 1
2. Ensuring quality control 1 3
3. Waste exchange
1
4. Managing e-waste
26) • Index 1/2
• Page number 1/2
• Expanded view of assembly 1/2
• Disassembly sequence 1/2
• Tolerances, gazes, sizes of components 3
• Serviceability 1/2
• Life span
1/2
• Decision for Repair or Replacement
• Assembly procedure and
• Working test procedure (Any 6)
27) Cooling system components:
• Radiator ½
• Water pump ½
• Thermostat ½
• Cooling fan ½ 3
• Pressure cap ½
• Radiator cap ½

IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

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28) A turbo charged engine can be more powerful and efficient than a naturally 3
aspirated engine because the turbine forces more air, fuel and supply to
combustion chamber.
1. Diaphragm clutch is small in size. 1
29) 2. It transmits more torque. 1 3
3. It is less affected by centrifugal force. 1
30) 1. Check boots for breakage ½
2. Replace the broken Circlip. ½
3. Check that there is no play. ½
4. Check and seethe in board. ½
5. Check the play in redial direction. ½ 3
6. Check all components of drive shaft ½
31) 1. Maintaining the correct vehicle ride height. 1
2. Reducing the effect of shock forces to the vehicle. 1
3. Maintain the correct wheel alignment 1 3
4. Supporting the vehicles driving stability. Any 3
32) The harness consists of bunches of cables leading to the various
components to be connected.
Each bunch is bound together with a PVC tape, leaving sufficient lengths of 3
individual cables protecting at each end for making the necessary electrical
connections easily.
33) 1. Glass or ceramic fusses 1
2. Blade-type fuses 1 3
3. Bullet or cartridge fuses 1
PART-D
IV. ANSWER THE FOLLOWING (ANSWER ANY 2) 2x6=12

34)

1
1
1
1
1 6
1

Any six each

IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

5
35) Rack and pinion Steering system:

6

OR Diagram-5, Parts-1

36) 1. Battery acid is very corrosive. Do not allow it to come in contact 1
2. When making connections to a battery, be careful. 1
3. When disconnecting battery cables, always disconnect the negative 1
(ground) cable first.
4. When connecting battery cables, always connect the negative cable 1 6
last.
5. Avoid any arcing or open flames near battery. 1
6. Follow manufacturer’s instructions when charging s battery. 1
7. Do not add additional electrolyte to the battery if it is low. Add only
distilled water.
8. Do not wear any jewelry or watches while servicing the battery.
9. Never lay tools across the battery
10. Wear safety glasses or face shield when servicing the battery.

Any 6

IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

6
37) Ignition system

6

Diagram-5mark

Parts-1mark
*******END********

IIPUC EXAM -1, MARCH 2025 KSEAB 63-AUTOMOBILE MODEL ANSWERS

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