B.TECH - Semester 5 theory of machines Question Paper 2021 (dec)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- What do you mean by degrees of freedom? Explain.
- Classily kinematic pairs based on constrains 3 Briefly explain line working of Geneva mechanism.
- Wilh the help of a neal sketch explain any one steering mechanism.
- Explain Klien's construction melhod to delermine the velocily and acceleralion of slider crank mechanism.
- What is creep in bells? Explain
- Brielly explain the working of a cone clutch.
- Classify different lypes of gears. P.T.O. 落等
- Whal do you mean by interference in gears?
- Derive the expressions to find the maximum velocity and accoleration of follower of cam if it execules SHM. ( $10 \times 4=40$ Marks) (Answer any one full question from each module, each question carries 20 marks)
- Synthesize a four-bar mechanism to generate a function $y=\sin x$ for $0 \leq \mathrm{K} \leq 90^{\circ}$. The range of the outpul crank may be chosen as $60^{\circ}$ while that of input crank be $120^{\circ}$. Assume three precision points which are...
- (a) Derive the expressions for the velocity and acceleration of the slider of a slider crank chain, anahylically.
- (b) Explain the working of any one quick return mechanism.
- In the mechanism shown in figure, the slider $\mathbf{D}$ is constrained to move on a horizontal path. The crank OA is rolating in the counler-clockwise direction al a speed of 180 rpm , increasing al the rate of $50 \mathrm{rad} / \mathrm{s}^{2}$. T...
- (a) A single dry plate clutch (ransmils 7.5 kW al 900 rpm . The axial pressure is limiled to $0.07 \mathrm{~N} / \mathrm{mm}^{2}$. If the coefincient of friction is 0.25 , find (i) Mean redius and face width of the friction lining assuming the ratio ...
- (b) Two pulleys, ane 450 mm diameter and the other 200 mm diameter are on, parallel shafts 1.95 m apart and are connecled by a crossed belt. Find the length of the belt required and the angle of conlact between the belt and each pulley. What power ca...
- A pair of involute spur gears with $16^{\prime \prime}$ pressure angle and pitch of module 6 mm is in mesh. The number of teeth on pinion is 16 and its rotational speed is 240 rpm . When the gear ratio is 1.75 , find in order that the interference is...
- Two shalls $A$ and $B$ are co-axial. $A$ gear $C$ ( 50 leelh) is rigidly mounled on shart A. A compound gear D-E gears with C and an internal gear G. D has 20 teelh and gears with C and E has 35 leeth and gears with an internal gear G . The gear G is...