Organisation : Karnataka Secondary Education Examination Board
Exam : JTS (Junior Technical Students)
Document Type : Model Question Paper
Category or Subject : Engineering Drawing
Year : 2017
Website : https://kseab.karnataka.gov.in/
Download Engineering Drawing Question Paper : https://www.pdfquestion.in/uploads/11800-Enggdrawing.pdf
JTS Engineering Drawing Model Question Paper :
Code.No. : 72
Time : 2-00 P.M. to 5-15 P.M.
Max. Marks : 50
General Instructions to the Candidate :
1. This Question Paper consists of 5 objective and subjective types of questions.
Related : KSEEB JTS Elements of Engineering Model Question Paper 2017 : www.pdfquestion.in/11797.html
2. This question paper has been sealed by reverse jacket. You have to cut on the right side to open the paper at the time of commencement of the examination. Check whether all the pages of the question paper are intact.
3. Follow the instructions given against both the objective and subjective types of questions.
4. Figures in the right hand margin indicate maximum marks.
5. The maximum time to answer the paper is given at the top of the question paper. It includes 15 minutes for reading the question paper.
Instructions :
i) Answer all the questions.
ii) Retain the constructional details.
iii) All dimensions are in mm.
iv) Use first angle projection only.
v) Missing dimensions may be assumed.
vi) All drawings should be drawn in drawing sheet only.
1. a) Fill in the blanks with the correct figure/word(s) by selecting from the choices given in the brackets :
i) Hidden lines are drawn as ……………………… .
( dashed narrow line, dashed wide line, long dashed-dotted narrow line )
ii) The unit of R.F. is ……………………… .
( centimetre, metre, no unit )
iii) The front view of an object projected on the ……………………… .
( horizontal plane, profile plane, vertical plane )
iv) When a right circular cone is cut by a plane passing through apex the curve obtained is …………………….. .
( circle, ellipse, triangle )
v) Knuckle threads are used in …………………….. .
( electrical bulbs, bench vice, lead screw of a lathe )
b) Match the following : 5 × 1 = 5
Group A Group B
i) Addendum a) innermost part of a thread
ii) Dedendum b) outermost part of a thread
iii) Crest c) distance between creast and root
iv) Root d) measured parallel to the axis of the thread
v) Pitch e) radial height of the tooth above the pitch circle
f) radial height of the tooth below the pitch circle.
2. a) Print the following in single stroke vertical capital letters of height 18 mm with 6 : 5 ratio. 5 ‘CLUTCHES’
b) A length of 2 decimetre is represented by 5 centimetre. Find the R.F.
and construct a plain scale to measure up to 8 decimetre. 5
3. a) Plot an ellipse having major axis 130 mm and the focal points 100 mm apart by intersecting arc method. 5
b) Draw a hyperbola when half the transverse axis is 90 mm, the abscissa is 60 mm and double ordinate is 150 mm. 5
4. a) Draw the basic types of lines recommended by bureau of Indian standards. 3
b) The pictorial view of an object is shown in Figure No. 1. Draw the following orthographic views and mark the dimensions : 7
(i) Front view — Looking in the direction of arrow ‘X’
(ii) Top view — Looking in the direction of arrow ‘Y’
(iii) Side view — Looking in the direction of arrow ‘Z’.
5. Figure No. 2 shows the sectional elevation of a flexible coupling. Draw the sectional elevation of a flexible coupling in full size ( 1 : 1 size ). 10
Elements Of Engineering :
SECTION – A :
Instruction : Answer Question No. 1 and any two full questions of the remaining.
1. Fill in the blanks with the appropriate term selecting from the choices given in the brackets : 10 × 1 = 10
a) Charcoal is an example of ……………….. fuel.
( liquid, solid, gaseous )
b) Compression ratio of diesel engine may have a range of ……………….. .
( 8 to 10, 10 to 15, 16 to 20 )
c) Pelton wheel is the most commonly used turbine for …………………… head and small quantity of water.
( high, low, medium )
d) The function of the …………………… is to inject the high pressure diesel into the engine cylinder in the atomised form.
( spark plug, carburettor, injector )
e) Sprocket wheel is used in …………………. drive.
( belt, chain, gear )
f) Induced e.m.f. that always opposes the applied voltage is known as …………………….. .
( dynamically induced e.m.f., self induced e.m.f., mutually induced e.m.f. )
g) The value of form factor of an a.c. quantity is ………………………. .
( 1·11, 1·414, 0·707 )
h) The direction of induced e.m.f. can be found by …………………….. .
( Ampere rule, Fleming’s left hand rule, Fleming’s right hand rule )
i) An armature core of a d.c. machine is laminated to reduce ………………………. .
( resistance, reluctance, conductance )
j) The output rating of a transformer is ………………………. .
( K.V., K.W., K.V.A. )
2. a) What are boiler accessories ? 2
b) Write down the essential boiler mountings. 2
c) Sketch and describe the Cochran boiler. 6
3. a) How are the internal combustion engines classified ? 2
b) Differentiate between petrol engine and diesel engine. 2
c) With neat sketches explain the principle and working of four-stroke diesel engine. 6
4. a) Define a turbine. 2
b) Mention the uses of pumps. 2
c) Describe with a line diagram the working of a reciprocating pump. 6
SECTION – B :
Instruction : Answer any two full questions of the following.
5. a) Define dynamically induced e.m.f. 2
b) Draw a neat circuit diagram of shunt generator and explain briefly. 3
c) On what principle does the d.c. motor work ? Name the types of d.c. motors. 5
6. a) Write the symbolic diagrams of ammeter and wattmeter. 2
b) How the lamps are classified ? 3
c) With a neat circuit diagram explain the working of electric bread toaster. 5
7. a) Define stator and rotor. 2
b) Draw a neat sketch of alternator and label the parts. 4
c) Write short notes on any two of the following : 4
i) Conduit wiring system
ii) Step down transformer
iii) Counter e.m.f.