17412 msbte model answer paper

SYLLABUS FOR THE SUBJECT THEORY OF MACHINES 17412

1. Fundamentals and type of Mechanisms
Specific objectives:
------- Define various terms related to mechanisms.
------- Explain construction and working of various mechanisms
1.1 Kinematics of Machines:- Definition of Kinematics, Dynamics, statics,
Kinetics, Kinematic link, Kinematic pair and its types, constrained motion
and its types, Kinematic chain and its types, Mechanism, inversion, machine
and structure. ----- 8 Marks
1.2 Inversion of Kinematic Chain
------- Inversion of four bar chain, coupled wheels of Locomotive, Beam engine,
Pantograph.
------- Inversion of single slider Crank chain –Pendulum pump, Rotary I.C.
Engine mechanism, Oscillating cylinder engine,Whitworth quick return
mechanism. Quick return mechanism of shaper.
------- Inversion of Double Slider Crank Chain- Scotch Yoke Mechanism,
Elliptical trammel, Oldham’s Coupling -----8 Marks

2. Velocity and Acceleration in Mechanisms
Specific objectives
------- Draw velocity and acceleration diagram for given mechanism
2.1 Concept of relative velocity and relative acceleration of a point on a link,
angular acceleration, inter-relation between linear and angular velocity and
acceleration.
2.2 Analytical method (No derivation) and Klein’s construction to determine
velocity and acceleration of different links in single slider crank mechanism.
-----8 Marks
2.3 Drawing of velocity and acceleration diagram of a given configuration,
diagrams of simple Mechanism. Determination of velocity and acceleration
of point on link by relative velocity method(Excluding Coriollis component
of acceleration) ------- 8 Mark

3. Cams and Followers
Specific objectives
------- Define the terms related to Cam
------- Classify Cams and Followers
------- Draw cam profile as per the given applications
3.1 Concept, definition and applications of Cams and Followers. Cam
terminology
3.2 Classification of Cams and Followers.
3.3 Different follower motions and their displacement diagrams - Uniform
velocity, Simple harmonic motion, uniform acceleration and Retardation.
---- 4 Marks
3.4 Drawing of profile of radial cam with knife-edge and roller follower with and
without offset with reciprocating motion (graphical method)
-----8 Marks

4. Power Transmission
Specific objectives
------- Give State broad classification of Drives.
------- Select Suitable Drives and Mechanisms for a particular application
------- Calculate various quantities like velocity ratio, belt tensions, slip, angle of

contact, power transmitted in belt drives
4.1 Belt Drives- flat belt, V-belt & its applications, material for flat and V-belt.
Selection of belts, angle of lap, length of belt, Slip and creep. Determination
of velocity ratio of tight side and slack side tension, centrifugal tension and
initial tension, condition for maximum power transmission (Simple
numericals) ------ 8 Marks
4.2 Chain Drives- Types of chains and sprockets, velocity ratio. Advantages &
Disadvantages of chain drive over other drives, Selection of Chain &
Sprocket wheels, methods of lubrication. ----- 4 Marks
4.3 Gear Drives – Classification of gears, Law of gearing, gear terminology.
Types of gear trains, their selection for different applications. Train value &
velocity ratio for simple, compound, reverted and epicyclic gear trains.
.............8 Marks

5. Flywheel and Governors --------- 8 Marks
Specific objectives
------- Differentiate between flywheel and governor
------- Explain with neat sketch the construction and working of various
governors
5.1 Flywheel –Concept, function and application of flywheel with the help of
turning moment diagram for single cylinder 4-Stroke I.C Engine (no
Numericals)
Coefficient of fluctuation of energy, coefficient of fluctuation of speed and its
significance.
5.2 Governors- Types, concept, function and application & Terminology of
Governors.
5.3 Comparison between Flywheel and Governor.

6. Brakes and Dynamometers. ------------- 10Marks
Specific objectives
------- List the differences between brakes and dynamometers
------- Explain with neat sketch the construction and working of various brakes
and dynamometers
------- Calculate braking force, braking torque and power lost in friction in shoe
and band brake
6.1Function of brakes and Dynamometers, Type of brakes & Dynamometers,
comparison between brakes & Dynamometer.
6.2 Construction and working i) shoe brake, ii)Band brake iii) Internal expending
shoe brake iv) Disc Brake
6.3 Numerical problems to find braking force and braking torque and power for
shoe and band brake.
6.4 Construction and working of i) Rope brake Dynamometer ii) Hydraulic
Dynamometer iii) Eddy current Dynamometer.

7. Clutches and Bearings.
Specific objectives
------- Explain the difference between uniform pressure and uniform wear
theories
------- Explain with neat sketch, the construction and working of various clutches
------- Calculate torque required to over come friction and power lost in friction
in clutches and footstep bearings
7.1 Clutches- Uniform pressure and Uniform Wear theories. Function of Clutch
and its application, Construction and working of i) Single plate clutch, ii)
Multiplate clutch, iii) Centrifugal Clutch iv) Cone clutch v) Diaphragm
clutch, (Simple numericals on single and Multiplate clutches).
7.2 Bearings- i) Simple Pivot, ii) Collar Bearing iii) conical pivot. Torque and
power lost in friction. (Simple numericals)

8. Balancing
Specific objectives
------- Explain the concept of balancing
------- Find balancing mass and position of plane, analytically and graphically.
8.1 Concept of balancing. Balancing of single rotating mass. Analytical/Graphical
methods for balancing of several masses revolving in same plane.