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Category wise paper solution Questions

Examination: 2017 SUMMER
Que.No Question/Problem marks
Q 2 a )

Draw a neat sketch and explain working of beam engine.

4

Q 2 c )

Draw and explain in short, types of followers used in cam and follower.

4

Q 2 d )

Explain condition for maximum power transmission.

4

Q 2 e )

Explain the compound gear train with neat sketch and write down the velocity ratio’s equation.

4

Q 3 a )

Differentiate between mechanism and machine.

4

Q 3 b )

Explain the working of Whitworth quick return mechanism.

4

Q 3 e )

Explain the working of Watt governor with neat diagram.

4

Q 3 f )

Explain the working of centrifugal clutch with neat sketch.

4

Q 4 a )

Explain the working of freewheel mechanism of bicycle with sketch.

4

Q 4 c )

What are the advantages of ‘V’ belt drive over flat belt drive ?

4

Q 4 d )

Explain the working of flywheel with the help of turning moment diagram.

4

Q 4 e )

Explain the working of internal expanding brake with neat sketch.

4

Q 6 a )

Draw a neat sketch of Oldham’s coupling and explain the working of it.

4

Q 6 b )

Define following terms Fluctuation of energy, co-efficient of fluctuation of energy, co-efficient of fluctuation speed, maximum fluctuation of energy

4

Q 6 c )

Explain the working of rope brake dynamometer with neat sketch

4

Q 6 d )

Explain the working of single plate clutch with neat diagram.

4

Q 6 e )

State reasons for balancing of rotating elements of machine. Explain balancing concept.

4

Examination: 2017 WINTER
Que.No Question/Problem marks
Q 1 b )

State any four types of friction clutch, along with its application each.

4

Q 1b)(a)

Define completely constrained motion and successfully constrained motion with neat sketch. State one example of each.

4

Q 1b)(b)

State function of clutch. Explain working principle of clutch.

4

Q 2 a )

What is a machine ? Differentiate between a machine and a structure.

4

Q 2 a )

Differentiate between machine and structure.

4

Q 2 b )

Explain with the neat sketch working of crank and slotted lever quick return mechanism.

4

Q 2 b )

Describe with neat sketch the working of scotch yoke mechanism.

4

Q 2 c )

Define linear velocity, angular velocity, absolute velocity and state the relation between linear velocity and angular velocity.

4

Q 2 c )

Explain the inter-relation between linear and angular velocity, linear and angular acceleration with suitable example.

4

Q 2 d )

Explain the Klein’s construction to determine velocity and acceleration of single slider crank mechanism

4

Q 2 d )

Explain the Klein’s construction to determine velocity and acceleration of a link in an I.C. engine mechanism.

4

Q 2 e )

Draw the labelled displacement, velocity and acceleration diagrams for a follower when it moves with uniform velocity.

4

Q 2 e )

Draw the labelled displacement, velocity and acceleration diagrams for a follower when it moves with simple harmonic motion.

4

Q 2 f )

A flat belt drive is required to transmit 35 kW from a pulley of 1.5 m effective diameter running at speed of 300 rpm. The angle of contact is spread over 11/24 of the circumference co-efficient of friction for the surface is 0.3. Determine the maximum t

4

Q 2 f )

A pulley rotating at 50 m/s transmits 40 kW. The safe pull in belt is 400 N/cm width of belt. The angle of lap is 170º. If coefficient of friction is 0.24, find required width of belt.

4

Q 3 a )

In a four bar chain ABCD, AD is fixed and is 150 mm long. The crank AB is 40 mm long and rotates at 120 r.p.m. clockwise, while the link CD = 80 mm oscillates about D. BC and AB are of equal length. Find the angular velocity of link CD when angle BAD = 60

4

Q 3 b )

In a slider crank mechanism, the length of crank OB and connecting rod AB are 125 mm and 500 mm respectively. The centre of gravity G of the connecting rod is 275 mm from the slider. The crank speed is 600 rpm clockwise. When the crank has turned 45 from

4

Q 3 c )

Explain slip and creep phenomenon in belts.

4

Q 3 d )

Draw the neat sketch of diaphragm clutch and explain its working.

4

Q 3 e )

Write the procedure for balancing of a single rotating mass by single masses rotating in the same plane.

4

Q 3 f )

Give detailed classification of followers.

4

Q 4 a )

State advantages and disadvantages of chain drive over belt drive

4

Q 4 b )

Justify that slider crank mechanism is a modification of the basic four bar mechanism with neat sketch.

4

Q 4 c )

Compare flywheel and governor.

4

Q 4 d )

Explain with neat sketch construction and working of eddy current dynamometer.

4

Q 4 e )

A flat foot step bearing 225 mm in diameter supports a load of 7500 N. If the co-efficient of friction is 0.09 and the shaft rotates at 600 rpm, calculate the power lost in friction.

4

Q 4 f )

Four masses attached to a shaft and their respective radii of rotation are given as : m 1 = 180 kg m 2 = 300 kg m 3 = 230 kg m 4 = 260 kg r 1 = 0.2 m r 2 = 0.15 m r 3 = 0.25 m r 4 = 0.3 m The angles between successive masses are 45, 75 and 135. Find th

4

Examination: 2016 SUMMER
Que.No Question/Problem marks
Q a)(ii)

Explain single cylinder 4-stroke I.C. engine using turning moment diagram.

4

Q 1b)(i)

State inversions of double slider crank chain. Explain Oldham's coupling with neat sketch

4

Q 1b)(ii)

Explain: (i) Uniform pressure theory. (ii) Uniform wear theory in clutches and bearing.

4

Q 1b)(iii)

Compare cross belt drive and open belt drive on the basis of: (i) Velocity ratio. (ii) Direction of driven pulley. (iii) Length of belt drives (iv) Application.

4

Q 2 a )

Draw a labeled sketch of quick return mechanism of shaper and explain its working....

4

Q 2 b )

What are the types of kinematic pair ? Give its examples. .............MSBTE TOM SUMMER 2016 Q 2 b

4

Q 2 c )

Define linear velocity, angular velocity, absolute velocity and state the relation between linear velocity and angular velocity.

4

Q 2 d )

Explain the Klein's construction to determine velocity and acceleration of single slider crank mechanism.

4

Q 2 e )

Draw neat sketch of radial cam with follower and show on it (i) Base circle. (ii) Pitch point. (iii) Prime Circle. (iv) Cam profile

4

Q 3 c )

Explain epicyclic gear train with neat sketch.

4

Q 3 d )

Draw a labelled sketch of multiplate clutch and state its applications.

4

Q 3 e )

Write the procedure of balancing single rotating mass when it balance mass is rotating in the same plane as that of disturbing mass.

4

Q 3 f )

What are the different types of follower motion ? Also draw displacement diagram for uniform velocity.

4

Q 4 b )

Justify with neat sketch elliptical trammel as an inversion of double slider crank chain.

4

Q 4 c )

Differentiate between flywheel and governor.

4

Q 4 d )

Explain construction and working of eddy current dynamometer.

4

Q 5 a )

State and explain Law of Gearing.

4

Q 6a)(i)

Explain sleep and creep phenomenon in belts.

4

Q 6a)(ii)

Explain single cylinder 4-stroke I.C. engine using turning moment diagram.

4

Examination: 2016 WINTER
Que.No Question/Problem marks
Q 1b)(i)

State any four inversions of single slider crane chain. Describe any one with neat sketch.

4

Q 1b)(ii)

Compare multiplate clutch with cone clutch on the following basis.

4

Q 2 a )

Explain a scotch yoke mechanism with a neat sketch.

4

Q 2 b )

What is machine ? Differentiate between a machine and a structure.

4

Q 2 c )

Explain Klein’s construction to determine velocity and acceleration of different links in single slider crank mechanism.

4

Q 2 d )

Define the terms

4

Q 2 d )

Explain with neat sketch different types of follower.

4

Q 3 a )

Discuss the following motion of the follower by drawing the displacement velocity and acceleration diagram.

4

Q 3 b )

The crank and connecting rod of steam engine are 0.5m .......

4

Q 3 c )

Compare cross belt drive and open belt drive on the basis of.......

4

Q 3 d )

State the applications of (i) Band brake (ii) Disc brake (iii) Internal expanding shoe brake (iv) External shoe brake

4

Q 3 f )

Explain with neat sketch working principle of epicyclic gear train.

4

Q 4 a )

Generally, the lower side is kept “Tight side” and upper side is kept as “Slack side” with the belt drives having small driving pulley and big driven pulley. Why ?

4

Q 4 b )

Describe with neat sketch the working of Oldham’s coupling.

4

Q 4 c )

Distinguish between flywheel and governor.

4

Q 4 d )

Discuss the working of Rope brake dynamometer with the help of a neat sketch.

4

Q 4 e )

Explain the working of internal expanding shoe brake with the help of neat sketch.

4

Q 4 f )

Explain the process of balancing of single rotating mass by a single mass rotating in the same plane.

4

Q 6a)(i)

Define the following terms as applied to cam with neat sketch.

4

Q 6a)(ii)

Differentiate between disc brake and internally expanding brake.

4

Examination: 2015 SUMMER
Que.No Question/Problem marks
Q 1b)(a)

Define completely constrained motion and successfully constrained motion with neat sketch. State one example of each.

4

Q 1b)(b)

Explain working principle of clutch. State its location in transmission system of an automobile.

4

Q 1b)(c)

Compare cross belt drive and open belt drive on the basis of .........

4

Q 2 a )

Differentiate machine and structure on any four points.

4

Q 2 b )

Explain with neat sketch working principle of Oldham’s coupling.

4

Q 2 c )

Define linear velocity, angular velocity, absolute velocity and state the relation between linear velocity and angular velocity.

4

Q 2 d )

Describe stepwise procedure for determination of velocity and acceleration by Klein’s construction with suitable data.

4

Q 2 e )

Draw a neat sketch of radial cam with roller follower and show the following on it.........

4

Q 3 a )

Draw a neat labelled sketch of “Multiplate Clutch”.

4

Q 3 b )

Why roller follower is preferred over a knife follower ? State two advantages and application of roller follower.

4

Q 3 c )

Write the procedure for balancing of a single rotating mass by single masses rotating in the same plane.

4

Q 3 d )

State the type of power transmission chains. Describe any one with its sketch.

4

Q 4 a )

Explain the phenomenon of slip and creep in a belt drive. State its effect on velocity ratio.

4

Q 4 b )

Explain with the diagram working of crank and slotted lever quick return mechanism.

4

Q 4 c )

Explain with sketch working of hartnell governor.

4

Q 4 d )

Explain working of hydraulic brake dynamometer with sketch.

4

Q 6a)(ii)

Explain the concept of fluctuation of energy related with turning moment diagram with sketch.

4

Examination: 2015 WINTER
Que.No Question/Problem marks
Q 1b)(iii)

Draw the neat sketch of epicyclic gear train and explain how it works.

4

Q 2 a )

State and explain various types of constrained motions with suitable examples.

4

Q 2 b )

Draw the neat labeled sketch of Oldham’s coupling. State its applications.

4

Q 2 c )

Define the terms linear velocity, relative velocity, angular velocity and angular acceleration.

4

Q 2 d )

For a single slider crank mechanism , state the formulae to calculate by analytical method – Also state the meaning of each term.

4

Q 2 e )

Define the following terms related to cams.

4

Q 3 a )

Space diagram 01 Mark, Velocity Diagram 02 marks , Calculations 01 Mark

4

Q 3 b )

A Single slider crank mechanism:

4

Q 3 c )

Formulae to calculate the length of open belt drive and length of Cross belt drive

4

Q 3 d )

Draw the neat sketch of single plate clutch and explain its working.

4

Q 3 e )

Procedure for balancing single rotating mass when its balancing mass is rotating in same plane:

4

Q 3 f )

Give detailed classification of followers.

4

Q 4 a )

What is centrifugal tension ? State its formula. Explain its effect on power transmitted by a belt drive

4

Q 4 b )

State the meaning of sliding pair, turning pair, rolling pair and spherical pair with one example each.

4

Q 4 c )

Draw turning moment diagram for single cylinder four stroke I.C. Engine. Label all parts.

4

Q 4 d )

Explain the working of rope brake dynamometer with neat sketch.

4

Q 4 e )

Problem : A vertical shaft 150 mm in diameter and rotating at 100 rpm rests on a flat end footstep bearing. The shaft carries.....

4

Q 4 f )

Position and magnitude of balance mass required

4

Q 6a)(i)

State and explain law of gearing with the help of suitable sketch.

4

Q 6a)(ii)

Compare flywheel and governor.

4