Board : Karnataka Secondary Education Examination Board
Exam : SSLC Elements Of Engineering
Document type : Model Question Paper
Website : kseeb.kar.nic.in
Download Sample/ Model Question Papers :
2012 : https://www.pdfquestion.in/uploads/%20kar.nic.in/6053-1271.pdf
2013 : https://www.pdfquestion.in/uploads/%20kar.nic.in/6053-71.pdf
SSLC Elements Of Engineering Model Paper :
Code No. : 71
Subject : Elements Of Engineering 2012 :
General Instructions :
i) The Question-cum-Answer Booklet consists of objective and subjective types of questions having 7 questions.
ii) Space has been provided against each objective type question. You have to choose the correct choice and write the complete answer in the space provided.
iii) For subjective type questions enough space for each question has been provided. You have to answer the questions in the space.
iv) Follow the instructions given against both the objective and subjective types of questions.
v) Candidate should not write the answer with pencil. Answers written in pencil will not be evaluated. ( Except Graphs, Diagrams & Maps )
vi) In case of Multiple Choice, Fill in the blanks and Matching questions, scratching / rewriting / marking is not permitted, thereby rendering to disqualification for evaluation.
vii) For reading the questions 15 minutes of extra time has been provided.
Note : Answer questions from Sections A & B as per the instructions given under them.
SECTION – A
Instruction : Answer Question No. 1 and any two full questions of the remaining.
1. Fill in the blanks with the appropriate word(s) selecting from the choices
a) The motor which is used to drive the electric trains is ……………………………… .
( dc series motor, dc shunt motor, dc compound motor )
b) Transformers are rated in ………………………………… . ( kW, kVA, kV )
c) A 3 Phase squirrel cage induction motor has …………………………. .
( high starting torque, very high starting torque, low starting torque )
d) The wiring is suitable in places where chemicals are present is ……………………….. wiring. ( PVC conduit, lead sheathed, CTS )
e) Wattmeter consists of ………………………… . ( current coil & inductive coil, current coil & pressure coil, current coil & resistive coil )
f) …………………. is used to save the boiler against the overheating caused due to the low water level. ( Fusible plug, Blow-of-valve, Safety valve )
g) Atomiser is used in ……………………. engines. ( gas, petrol, diesel )
h) ……………………….. pulley is used to increase the arc of contact. ( Stepped cone, Jockey, Fast and loose )
i) …………………….. pump is a positive displacement pump. ( Centrifugal, Gear, Reciprocating )
j) ……………………… is the ratio of load to effort. ( Mechanical advantage, Efficiency, Velocity ratio )
2. a) What is a generator ? On what principle does it work ? 2
b) With a neat sketch explain briefly the working principle of a dc motor. 5
c) Write any three uses of squirrel cage induction motor. 3
3. a) Draw a neat sketch of core type transformer and explain its construction. 4
b) List any two advantages of cleat wiring. 2
c) Write a neat sketch of mercury vapour lamp and label its parts. 4
4. a) Draw a neat diagram of electric bell and label the parts. 4
b) Name two atomic power stations in our nation. 2
c) Write short notes on any two of the following : 2 × 2 = 4
i) Voltmeter
ii) Power transmission lines
iii) Ohm’s law.
Section – B :
Instruction : Answer any two full questions of the following.
5. a) What are boiler accessories ? 2
b) List out the boiler mountings. 2
c) Sketch and describe the Babcock and Wilcox boiler. 6
6. a) State whether the following statements are true or false : 2
i) Water gauge is a safety device
ii) Junction valve is a boiler accessory.
b) Explain the function of a simple carburetor. 2
c) Explain with neat line diagram the working of four-stroke petrol engine. 6
7. a) Explain the function of Fusible plug. 2
b) Write down the classification of pumps. 2
c) Describe with a line diagram the working of a single acting reciprocating pump.
Elements Of Engineering 2013 :
1. Fill in the blanks with the appropriate word(s) selecting from the choices given in the brackets : 10 × 1 = 10
a) In ……………………………. pump piston is used for movement. ( centrifugal , reciprocating, gear )
b) Thermal efficiency of …………………………… engine is more. ( steam, gas, I.C. )
c) Steam containing water particles is called ……………………….. . ( saturated steam, superheated steam, wet steam )
d) A ………………………….. turbine is used in hydroelectric power station to obtain electricity. ( steam, water, gas )
e) …………………………… is used to empty the boiler. ( Blow off valve, Fusible plug, Safety valve )
f) In d.c. machines, the pole shoe is laminated to reduce ……………………… . ( reluctance, inductance, resistance )
g) The output rating of a lamp is ……………………….. . ( volt, ampere, watt )
h) The current which flows only in one direction is called ………………………… . ( alternating current, direct current, eddy current )