Karnataka SSLC Question Paper 2022 Answer Key Automobile

A
CCE RF
CCE RR
NSQF LEVEL-2
KARNATAKA SECONDARY EDUCATION EXAMINATION BOARD, MALLESHWARAM,
BANGALORE – 560 003
NSQF LEVEL-2 EXAMINATION, MARCH/APRIL, 2022
MODEL ANSWERS
Date : 08. 04. 2022 ] CODE NO. : 88-EK

Subject : Automobile
( English Medium )
( Regular Fresh & Regular Repeater )
[ Max. Marks : 60
Qn.
Value Points Total
I. Four choices are given for each of the following questions /
incomplete statements. Choose the correct answer and write
the complete answer along with its question number and its
letter of alphabet : 10  1 = 10
1. The relation between Indicated Horse Power (I.H.P.), Brake
Horse Power (B.H.P.) and Friction Horse Power ( F.H.P ) is
(A) I.H.P = B.H.P + F.H.P (B) I.H.P = B.H.P – F.H.P
(C) I.H.P = F.H.P – B.H.P (D) I.H.P = B.H.P/F.H.P
Ans : (A) I.H.P = B.H.P + F.H.P 1
2. The compression ratio of diesel engine is
(A) 8 to 9·5 (B) 9·5 to 8
(C) 16 to 22 (D) 22 to 16
Ans : (C) 16 to 22 1
3. Observe the analogy and choose the correct answer
Solid lubricant : Graphite : : Semisolid lubricant : ................. .
(A) Animal oils (B) Palmitic acid
(C) Commercial grade oils (D) Aluminium paste
Ans : (D) Aluminium paste 1

RF/RR(A)-(200)-9103(MA) [ Turn over

88-EK (Level-2) 2 CE RF & RR
Qn.
Value Points Total

4. The unit fitted to the charging circuit is
(A) Alternator (B) Ignition coil
(C) Cut-out unit (D) Spark plug
Ans : (C) Cut-out unit 1
5. Multimeter is a/an
(A) Special tool (B) Electrical tool
(C) Hand tool (D) Measuring tool
Ans : (B) Electrical tool 1
6. The equipment used in an automobile service workshop to
increase the pressure of air by reducing its volume is
(A) Pneumatic wrenches
(B) Wheel balancer
(C) Air compressor
(D) Two-post lift
Ans : (C) Air compressor 1
7. Coolant is used for
(A) cooling the engine (B) freezing the engine
(C) heating the engine (D) firing the engine
Ans : (A) cooling the engine 1
8. The part of the vehicle cleaned by using newspaper is
(A) bonnet (B) windows
(C) tyres (D) roof
Ans : (B) windows 1
9. The tool used to check the oil level in the engine is
(A) Screw driver (B) Micrometer
(C) Steel rule (D) Dip stick
Ans : (D) Dip stick 1
10. Passive keyless entry system was first designed by
(A) General Motors (B) Mercedes-Benz
(C) Honda (D) Saturn
Ans : (A) General Motors 1
II. Fill in the blank with suitable answer : 4×1=4

11. The minimum temperature at which the oil will pour is
called ................... .

Ans : Pour point 1

RF/RR(A)-(200)-9103(MA)

CE RF & RR 3 88-EK (Level-2)
Qn.
Value Points Total
12. Hydrometer is used for measuring .................... .
Ans : specific gravity 1
13. Clogged filter ....................... fuel pressure.
Ans : reduces 1
14. Hypoid gears are widely used for ........................ drive.
Ans : final 1
III. Uses of hand tools are given in Column-A and hand tools are
given in Column-B. Match them and write the answer along
with its letter of alphabet. 4×1=4
15. Match the following :
Column-A Column-B
i) Create cylindrical holes a) snips
ii) Cut sheet metals b) file
iii) To hold small objects c) drill bits
iv) For sharpening tools d) chisel
e) pliers
f) grinding machine
g) punch
i) c) drill bits 1
ii) a) snips 1
iii) e) pliers 1
iv) f) grinding machine 1 4

IV. Answer the following questions : 6×1=6
16. Classify the types of automobile engine based on their
arrangement of cylinders.
i) Inline vertical engine
ii) Horizontal engine
iii) V-type engine
iv) Opposed cylinder engine
v) Radial engine 2×½ 1

RF/RR(A)-(200)-9103(MA) [ Turn over

88-EK (Level-2) 4 CE RF & RR
Qn.
Value Points Total

17. Write the principles of suspension system.

i) To restrict road vibrations

ii) To protect the passengers form road shocks

iii) To maintain stability of vehicle. 1×1 1

18. Mention the uses of brake light and side lights.

Break light : Indicates the other road users behind it 2×½

Side lights : Used for parking purpose. 1

19. Name the companies adopted electronic stability system in cars
in 95 models.

i) BMW

ii) Mercedes-Benz. 2×½ 1

20. What are the two precautions to be taken during manually
washing a vehicle ?

i) Wear old clothes

ii) Soap dries fast Wash one side at a time

iii) Do not use detergent Use car wash soap only. 2×½ 1

21. Mention the materials and tools required for changing the
coolant.

i) Pan

ii) Coolant

iii) Spanner. 2×½ 1

RF/RR(A)-(200)-9103(MA)

CE RF & RR 5 88-EK (Level-2)
Qn.
Value Points Total
V. Answer the following questions : 6 × 2 = 12
22. Mention the functions of alternator.
OR
Mention the functions of the front axle.
i) Produces alternating current when the engine is running.
ii) Converts A.C. To D.C.
iii) It is the source of electricity in automobile.
iv) Charges the battery when the engine is running. 21 2
OR

Ans:

i) It carries the weight of the front of the vehicle.

ii) It carries stub axle, king pin steering arm.

iii) It carries the brake system

iv) It controls the ride through shock absorber fitted on it.

v) In case of a four wheel drive, it also transmits power to
road wheels. 21 2

23. Explain the following automobile body parts :

(i) Hood

(ii) Bumpers.

i) Hood : Made in a single piece hinged at the rear to cover
the engine compartment.

ii) Bumpers : The rear and front bumpers consist of a single
bar provided with two ornaments. The rear and front
bumper secured by screws. The front bumper is secured
through the ornament stud screws and nut in two
brackets welded on body. 1+1 2

RF/RR(A)-(200)-9103(MA) [ Turn over

88-EK (Level-2) 6 CE RF & RR
Qn.
Value Points Total

24. Draw the diagram of file.

OR

Draw the diagram of ball pane hammer.

DIAGRAM OF FILE

DIAGRAM = 2

OR

DIAGRAM OF BALL PEEN HAMMER

DIAGRAM = 2

25. Air filter is very important for a vehicle. Why ?

Air filter is very important for a vehicle because,

i) Air filter keep the inside of the engine free of dust and
insects.

ii) Vehicle needs air just as much as it needs fuel.

iii) Air flowing freely helps the vehicle run well. 21 2

RF/RR(A)-(200)-9103(MA)

CE RF & RR 7 88-EK (Level-2)
Qn.
Value Points Total

26. Mention the assistances provided by customer support to a
customer.

i) In purchase or maintenance of vehicle.

ii) Assistance in planning, installation training, trouble
shooting, maintenance upgrading and disposal of vehicle. 2

27. Explain blind spot detection in car safety technology.

There now is a system for alerting us if we attempt to make a
turn and an object or car is in our blind spot. This technology
responds as soon as the driver puts on the turn signal thereby
preventing a collision caused by the drivers blind spot. 2

VI. Answer the following questions : 4 × 3 = 12

28. Write the requirements of propeller shaft.

i) High torsional strength

ii) Toughened and hardened

iii) Efficiently welded

iv) Dynamically balanced

v) Least stress concentration

vi) Reduced thrust loads under high torque

vii) Higher fatigue life. 31 3

RF/RR(A)-(200)-9103(MA) [ Turn over

88-EK (Level-2) 8 CE RF & RR
Qn.
Value Points Total

29. General tools should be properly handled and proper
procedure should be adopted. Why ?

i) Tools should be kept at proper place after use.

ii) Worn out tools should be replaced with new tools.

iii) Tools should be kept in tool box or display board to avoid
damage to the tool or worker.

iv) Correct procedure should be used for holding any tools
otherwise it may hurt worker or damage to material.

v) Proper safety procedure should be adopted to avoid
accidents.

vi) Proper dress should be wear by trainees during workshop
practicals. 31 3

30. Write short notes on "Body language/communication" related
to customer service.

i) Most of the communication that we relay to others is
done through our body language.

ii) If we have a negative body language it can show our lack
of care.

iii) Important aspects of the positive body language are
smiling and eye contact.

iv) Make sure to look your customers in the eye. It shows we
are listening to them.

v) Smiling makes the conversion more positive. 31 3

RF/RR(A)-(200)-9103(MA)

CE RF & RR 9 88-EK (Level-2)
Qn.
Value Points Total

31. Explain the steps of changing the engine coolant.

OR

Explain the steps of changing the fuel filter.

Steps :

i) Purchase the coolant as per manufactures specifications

ii) Prepare the vehicle

iii) Keep a pan below radiator

iv) Open the radiator cap and see level of coolant

v) Open the drain plug

vi) Empty the coolant

vii) Put back the drain plug at the bottom of the radiator

viii) Fill the radiator to the top with the coolant

ix) Turn the engine for several minutes to get any air out of
the system

x) Watch the temperature gauge, make sure that car does
not overheat. Turn the car off. Fill the radiator to the top
with coolant. 6½ 3

OR

i) Purchase the filter

ii) Locate the old filter

iii) Follow procedure to remove fuel pressure

iv) Unscrew each hose clamp bolt

v) Push the clamp up the hose

vi) Remove the old filter and replace with new filter

vii) Run the engine and check for leaks. 6½ 3

RF/RR(A)-(200)-9103(MA) [ Turn over

88-EK (Level-2) 10 CE RF & RR
Qn.
Value Points Total

VII. Answer the following questions : 3 × 4 = 12
32. Draw the diagram of Elliot type stub axle. Label the part, king-
pin.
OR
Draw the diagram of Wankel rotary engine. Label the part,
spark plug.

ELLIOT TYPE STUB AXLE
Diagram = 3
Label the Part = 1 4
OR

WANKEL ROTARY ENGINE
Diagram = 3
Label the Part = 1 4

RF/RR(A)-(200)-9103(MA)

CE RF & RR 11 88-EK (Level-2)
Qn.
Value Points Total

33. How to prepare your car before changing the engine oil and oil
filter ?
i) Car should be on a level surface
ii) The parking brake on and engine off
iii) If space needed under the car jack it up and use jack
stands to support it.
iv) Jacks on their own are very unstable never get under
your car without using jack stands
v) Put something underneath the engine to prevent spilling
oil onto the ground.
vi) Follow the steps to change the engine oil and oil filter. 41 4
34. List the types of spanner used in automobile service.
OR
List the special tools used in automobile service.
i) Ring spanners
ii) Combination spanners
iii) Box spanners
iv) Open ended spanners. 41 4
OR

i) Universal clutch holding tool
ii) Torque wrench
iii) Tappet wrench
iv) Fly wheel puller. 41 4

RF/RR(A)-(200)-9103(MA) [ Turn over