B.TechSemester 62024-25Theory Of MachineBME603

Theory Of Machine (BME603) - AKTU Question Paper 2024-25

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 2024-25. 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:2024-25

University:AKTU / UPTU

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Questions Asked in 2024-25

Theory Of Machine (BME603) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 02 x 7 = 14

a
Differentiate between lower pair and higher pair
b
Define Grashof’s Law
c
State Kennedy’s theorem
d
Define pressure angle related to cam
e
What do you understand by interference?
f
State D’Alembert’s principle
g
Explain the term hunting of governor

Section BAttempt any three of the following: 07 x 3 = 21

a
In a slider-crank mechanism, the crank is 480 mm long and ro tates at 20 rad/s in the counter-clockwise direction. The length of the connecting r od is 1.6 m. When the crank turns 60° from the inner-dead centre, determine: (i) velocity of the slider (ii) velocity of a point E located at a distance 450 mm on the connecting rod extended
b
What do you understand by inversions of mechanism? Describe various inversions of 4 bar chain with suitable examples
c
Discuss the involute profile of gear teeth. What is the diff erence between involute and cycloidal form of teeth?
d
Four masses m1, m2, m3 and m4 are 200 kg, 300 kg, 240 kg and 2 6 0 k g respectively. The corresponding radii of rotation are 0.2 m, 0. 15 m, 0.25 m and 0.3 m respectively and the angles between successive masses are 45°, 75° and 135°. Find the position and magnitu de of the balance mass requi red, if its radius of rotation is 0.2 m
e
What is meant by a self-locking brake? Describe the working of a band and block brake with the help of a neat sketch

Section CAttempt any one part of the following: 07 x 1 = 07

a
Explain Coriolis component of acceleration and derive the ex pressions for Coriolis component of acceleration
b
What are the quick return mech anisms? Discuss the working an d use of any one 1 K2 of them with neat sketch
a
Two 20° involute spur gears mesh externally and give a veloc ity ratio of 3. The module is 3 mm and the addendum is equal to 1.1 module. If the pinion rotates at 120 rpm, determine the (i) Minimum number of teeth on each wheel to avoid interference (ii) Contact ratio
b
What is the function of flywh eel? Derive the expression for maximum fluctuation of energy
a
A cam operating a knife-edged follower has the following data
a
Follower moves outwards through 40 mm stroke during 60° of cam rotation
b
Follower dwells for the next 45°
c
Follower returns to its original position during next 90°
d
Follower dwells for the rest of the rotation. The displacement of the follower is to take place with uniform acceleration and retardation during both the outw ard and return strokes. The lea st radius of the cam is 50 mm.Draw the profile of the cam when the axis of the f ollower passes through the cam axis
b
Discuss the various types of cam and followers with neat sketch
a
Each arm of a Porter governor is 200mm long and is pivoted o n the axis of the governor. The radii of rotation of the governor ball at the min i m u m a n d t h e maximum speeds are 120 mm and 160 mm respectively. The mass of the sleeve is 24 kg and each ball is 4 kg. Find the range of the speed of the governor. Also determine the range of speed of the governor if the friction at the sleeve is 18 N
b
Explain and derive the following expressions, for an uncoupl ed two-cylinder locomotive engine
a
Variation of tractive force
a
The turbine of a ship has a mass of 2.2 tonnes and rotates a t 1800rpm clockwise when viewed from the stern(aft). The radius of gyration of the rotor is 320 mm. Determine the gyroscopic couple and its effect when the ship tu rns left at a radius of 250 m with a speed of 6.9 m/s
b
Differentiate betw een brake and dynamometer. With the help of suitable diagram, explain the rope brake dynamometer

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.

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