B.TechSemester 62023-24Theory Of MachineKME603

Theory Of Machine (KME603) - AKTU Question Paper 2023-24

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Theory Of Machine Previous Year Question Paper for B.Tech Semester 6, academic session 2023-24. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 6

Session:2023-24

University:AKTU / UPTU

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Questions Asked in 2023-24

Theory Of Machine (KME603) — complete question paper · 100 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 10 = 20

a
What is constrained m otion? Define. 02 1
b
State Kennedy’s theorem. 02 1
c
What is the difference between r adial follower & offset follower? 02 2
d
State law of gearing. 02 2
e
State D’Alembert’s principle? 02 3
f
What is coefficient of fluctuation of speed? 02 3
g
What are the conditions of secondary balancing? 02 4
h
What do you mean by hunting of governor? 02 4 i. What is a Gyroscope? 02 5 j. What is dynamometer? 02 5

Section BAttempt any three o f t h e f o l l o w i n g : 3 x 10 = 30

a
Locate all the instantaneous centers of the slider crank mec hanism as shown in Fig. The lengths of crank OB and connecting rod AB are 100 mm and 400 mm respectively. If the crank rotates clockwise with a n angular velocity of 10 rad/s, find: 1. Velocity of the slider A , and 2. Angular velocity of the connecting rod AB
b
A pinion having 30 teeth drives a gear having 80 teeth. The profile of the gears is involute with 20° pressure angle, 12 mm module and 10 mm addendum. Find the length of path of contact, arc of contact an d the contact ratio
c
With the help of suitable diag ram, derive the expression for velocity & acceleration of the piston of reciprocating engine
d
A, B, C and D are four masses carried by a rotating shaft at radii 100, 125, 200 and 150 mm respectively. The planes in which the masse s revolve are spaced 600 mm apart and the mass of B, C and D are 10 kg, 5 kg, and 4 kg respectively. Find the required mass A and the r elative angular settings of the four masses so that the shaft shall be in complete balance
e
With the help of a neat sketch explain the working of a bloc k or shoe brake. What is meant by a self-locking and a self-energized brake?

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 1 x 10 = 10

a
What do you understand by inversion? Discuss any one inversi on of double slider crank chain
b
Explain Coriolis component of acceleration and derive the ex pressions for Coriolis component of acceleration
a
Derive the expression for min imum number of teeth required o n pinion to avoid interference
b
A cam, with a minimum radius of 25 mm, rotating clockwise at a uniform speed is to be designed to give a roller follower, at t he end of a valve rod, motion described below
1
To raise the valve through 50 mm during 120° rotation of the cam
2
To keep the valve fully raised through next 30°
3
To lower the valve during next 60°; and

To keep the valve closed during rest of the revolution i.e. 150° ;

The diameter of the roller is 20 mm and the diameter of the cam  shaft is
25 mm. Draw the profile of the cam when the line of stroke of t he valve
rod passes through the axis of the cam shaft, The displacement of the
valve, while being raised and lowered, is to take place with si mple
harmonic motion

a
The turning moment diagram fo r a petrol engine is drawn to t he following scales: Turning moment, 1 mm = 5 N-m; crank angle, 1 mm = 1°. The turning moment diagram repeats itself at every half revolution of the engine and the areas above and below the mean turning momen t line taken in order are 295, 685, 40, 340, 960, 270 mm 2. The rotating parts are equivalent to a mass of 36 kg at a radius of gyration of 15 0 mm. Determine the coefficient of fluctuation of speed when the engine runs at
b
A four-link mechanism with the following dimensions is acted upon by a force 80 N at 1500 on the link DC as shown in fig. AD = 500 mm, AB = 400 mm, BC = 1000 mm, DC = 750 mm, DE = 350 mm Determine the input torque T on the link AB for the static equilibrium of the mechanism for the given configuration
a
What do you understand by effort and power of governor? Find its expression
b
The arms of a Porter governor are each 250 mm long and pivot ed on the governor axis. The mass of each ball is 5 kg and the mass of th e central sleeve is 30 kg. The radius of rotation of the balls is 150 mm when the sleeve begins to rise and reaches a value of 200 mm for maximum speed. Determine the speed range of the governor. If the friction at the sleeve is equivalent of 20 N of load at the sleeve, determine how the spe ed range is modified
a
What is the difference betwee n absorption and transmission dynamometer? Also explain torsion dynamometer
b
Describe the working principl e of Gyroscope with the help of suitable example

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

Repeated Questions — KME603

Questions that appeared in more than one session, found by comparing 3 years of Theory Of Machine papers (2021-22, 2022-23, 2023-24)

What is the difference between r adial follower & offset follower? 02 2

Appeared in: 2021-22 · 2022-23 · 2023-24

Derive the expression for min imum number of teeth required o n pinion to avoid interference

Appeared in: 2021-22 · 2022-23 · 2023-24

What is constrained m otion? Define. 02 1