Sunday, December 17, 2017
Thursday, November 13, 2014
Machine Tools
DEPARTMENT OF
MECHANICAL ENGINEERING
MID-2 QUESTION
PAPER (3-1)
SUB: MACHINE TOOLS TIME
1 hr MARKS:
10
---------------------------------------------------------------------------------------------------------------------------------
1) Sketch and describe a rotary table of continuous milling
machine stating is main advantages.
2) A) what is meant by grinding? Explain.
b) What are rotary table surface grinders? Explain their
working.
3) Give a neat sketch of an internal pull type broach and
indicate the various terms relative to its teeth. Describe these terms in
brief.
4) What is the principle of six-point location? Explain.
KITE COLLEGE OF PROFESSIONAL ENGINEERING SCIENCES
DEPARTMENT OF
MECHANICAL ENGINEERING
MID-2 QUESTION
PAPER (3-1)
SUB: MACHINE TOOLS TIME
1 hr MARKS:
10
---------------------------------------------------------------------------------------------------------------------------------
1) Sketch and describe a rotary table of continuous milling
machine stating is main advantages.
2) A) what is meant by grinding? Explain.
b) What are rotary table surface grinders? Explain their
working.
3) Give a neat sketch of an internal pull type broach and
indicate the various terms relative to its teeth. Describe these terms in
brief.
4) What is the principle of six-point location? Explain.
MSE
DEPARTMENT OF
MECHANICAL ENGINEERING
MID-2 QUESTION
PAPER (3-1)
SUB: MACHINE TOOLS TIME
1 hr MARKS:
10
---------------------------------------------------------------------------------------------------------------------------------
1) Explain
need for a comparator and its principle
.
2) What
are the advantages sigma comparators?
3) What
is a drunken thread explain.
4) Describe
surface coating process.
KITE COLLEGE OF PROFESSIONAL ENGINEERING SCIENCES
DEPARTMENT OF
MECHANICAL ENGINEERING
MID-2 QUESTION
PAPER (3-1)
SUB: MACHINE TOOLS TIME
1 hr MARKS:
10
---------------------------------------------------------------------------------------------------------------------------------
5) Explain
need for a comparator and its principle
.
6) What
are the advantages sigma comparators?
7) What
is a drunken thread explain.
8) Describe
surface coating process.
DOM
KITE COLLEGE OF PROFESSIONAL ENGINEERING AND SCIENCES
DEPARTMENT OF MECHANICAL
III B.Tech II MID Examination
Sub: DOM
Date:
Branch: MECH Time: 1hr
Max
marks: 10
Answer
any Two questions 2x5=10 M
1. The turning moment curve for an engine is
represented by the equation, T = (20 000 + 9500 sin 2θ – 5700 cos 2θ) N-m,
where θ is the angle moved by the crank from inner dead centre. If the
resisting torque is constant, find: 1. Power developed by the engine ; 2.
Moment of inertia of flywheel in kg-m2, if the total fluctuation of speed is
not exceed 1% of mean speed which is 180 r.p.m; and 3. Angular acceleration of
the flywheel when the crank has turned through 45° from inner dead centre.
2. The turning moment
diagram of a four stroke engine may be assumed for the sake of simplicity to be
represented by four triangles in each stroke. The areas of these triangles are
as follows: Suction stroke = 5 × 10–5 m2; Compression stroke = 21 ×
10–5 m2; Expansion stroke =
85 × 10–5 m2; Exhaust
stroke = 8 × 10–5 m2. All the areas excepting expression stroke are
negative. Each m2 of area represents 14 MN-m of work. Assuming the
resisting torque to be constant, determine the moment of inertia of the
flywheel to keep the speed between 98 r.p.m. and 102 r.p.m. Also find the size
of a rim-type flywheel based on the minimum material criterion, given that
density of flywheel material is 8150 kg/m3 ; the allowable tensile
stress of the flywheel material is 7.5 MPa. The rim cross-section is rectangular;
one side being four times the length of the other.
3. Derive the equation for hartnell governor
4. A shaft carries four
masses A, B, C and D of magnitude 200 kg, 300 kg,400 kg and 200 kg respectively
and revolving at radii 80 mm, 70 mm, 60 mm and 80 mm in planes measured from A
at 300 mm, 400 mm and 700 mm. The angles between the cranks measured
anticlockwise are A to B 45°, B to C 70° and C to D 120°. The balancing masses
are to be placed in planes X and Y. The distance between the planes A and X is
100 mm, between X and Y is 400mm and between Y and D is 200 mm. If the
balancing masses revolve at a radius of 100 mm, find their magnitudes and
angular positions.
ATD 2
KITE COLLEGE OF
PROFESSIONAL ENGINEERING AND SCIENCES
DEPARTMENT OF
MECHANICAL ENGG,
III B.Tech II
MID Examination
Sub: ATD-II Date:
Branch: MECH Time: 1hr Max marks: 10
Answer any Two
questions 2x5=10 M
1.
(a) Mention importance of steam condenser and
give the difference between jet condenser and
surface condenser.
(b) Explain with neat sketch down
flow surface condenser?
2.
(a)
Mention any few points of comparison between impulse and reaction turbine.
(b) Define degree of reaction?
And prove it is 50% for reaction turbine.
3.
(a)
What is compounding? and why compounding is required?
(b) Explain with neat sketch
(i) Velocity compounding.
(ii) Pressure compounding and
(iii) Pressure - velocity
compounding.
4.
(a)
Explain methods to improve gas turbine cycle efficiency.
(b) A gas turbine consists of two
stage compressor with perfect intercooler and a single stage
turbine. If the plant works between the
temperature limits of 300K and 1000K and 1 bar and
16 bar. Find the net power of the plant
per kg of air. Take CP=1 KJ/kg K.
KITE COLLEGE OF
PROFESSIONAL ENGINEERING AND SCIENCES
DEPARTMENT OF
MECHANICAL ENGG,
III B.Tech II
MID Examination
Sub: ATD-II Date:
Branch: MECH Time: 1hr Max marks: 10
Answer any Two
questions 2x5=10 M
1.
(a) Mention importance of steam condenser and
give the difference between jet condenser and
surface condenser.
(b) Explain with neat sketch down
flow surface condenser?
2.
(a)
Mention any few points of comparison between impulse and reaction turbine.
(b) Define degree of reaction?
And prove it is 50% for reaction turbine.
3.
(a)
What is compounding? and why compounding is required?
(b) Explain with neat sketch
(i) Velocity compounding.
(ii) Pressure compounding and
(iii) Pressure - velocity
compounding.
4.
(a)
Explain methods to improve gas turbine cycle efficiency.
(b) A gas turbine consists of two
stage compressor with perfect intercooler and a single stage
turbine. If the plant works between the
temperature limits of 300K and 1000K and 1 bar and
16 bar. Find the net power of the plant
per kg of air. Take CP=1 KJ/kg K.
Friday, September 12, 2014
Monday, July 14, 2014
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