machanics qs bank

8/12/2019 Machanics Qs Bank

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PSN COLLEGE OF ENGINEERING AND TECHNOLOGY

(Autonomous)

Melathediyoor

DEPARTMENT OF AERONAUTICAL ENGINEERING

QUESTION BANK

Branch: B.E. Aerona!tical" #ear$%EME%TER: II $ &

%!'(ect: ))*)*+, MEC-ANIC% OF MAC-INE%

PART-A

*. Dierentiate /achine ro/ 0tr!ct!re.

+. Dierentiate con0trained 1ine/atic chain !ncon0trained 1ine/atic0 chain.

2. Deine in3er0ion o /echani0/.

&. 4rite the e5!ation or Gr!'ler60 criterion to a 7lane /echani0/.

8. Deine coeicient o riction.

6. -o9 9ill yo! calc!late a3erae 7re00!re in a cl!tch;


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+). Deine cycle and re5!ency in 3i'ration.

+*. Dierentiate lonit!dinal tran03er0e and tor0ional 3i'ration0.

++. Deine 3i0co!0 da/7in.

+2. Deine tran0/i00i'ility ratio or i0olation actor.

+&. 4hat i0 a ca/;

+8. 4hat are the dierent /otion0 o the ollo9er;

+@. Deine d9ell 7eriod.

+


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).


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&2. A 0hat carrie0 o!r /a00e0 A B C and D o /anit!de +))1 2))1 &))1 and

+))1 re07ecti3ely and re0ol3in at radii =)//


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ollo9ed 'y a d9ell 7eriod. I the ca/ rotate0 at a !nior/ 07eed o *8) RPM.

Calc!late the /ai/!/ 3elocity and acceleration o ollo9er d!rin the de0cent

7eriod.

&?. Dra9 the 7roile o a ca/ o7eratin a nie,eded ollo9er ro/ the ollo9in data:

Follo9er to /o3e o!t9ard thro!h &) // d!rin @) o a ca/ rotationH '" Follo9er

to d9ell or the net &8 c" Follo9er to ret!rn it0 oriinal 7o0ition d!rin net ?)

d"Follo9er to d9ell or the re0t o ca/ rotation. The di07lace/ent o the ollo9er i0

to ta1e 7lace 9ith 0i/7le har/onic /otion d!rin 'oth the o!t9ard and ret!rn 0tro1e0.

The lea0t radi!0 o the ca/ i0 8)//. I the ca/ rotate0 at 2)) r.7./.Deter/ine the

/ai/!/ 3elocity and acceleration o the ollo9er d!rin the o!t9ard 0tro1e and

ret!rn 0tro1e.

8). %1etch and e7lain any one in3er0ion o 0inle 0lider cran1 /echani0/

8*. %1etch and e7lain one in3er0ion o a cran1 and roc1er /echani0/.

8+. Deri3e an e7re00ion or the tor5!e re5!ired to lit a 9or1 9" 'y a 0cre9 (ac1 i0 l i0

the lenth o the ar/.

82. Deri3e an e7re00ion or a lenth o o7en 'elt dri3e and cro00 'elt dri3e.

8&. Di0c!00 the 'alancin 7roce00 in >,enine0.

88. A 0hat o 8)// dia/eter and +


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8@. An !n1no9n /a00 o / 1 attached to the end o an !n1no9n 07rin 9ith 0tine00 1

ha0 a nat!ral re5!ency o ?8cycle0 7er /in!te. 4hen * 1 /a00 i0 added to /a00 the

nat!ral re5!ency i0 lo9ered to ,'elt0 in 7arallel on roo3ed 7!lley0 o the 0a/e

0ie. The anle o the roo3e i0 2). The cro00, 0ectional area o each 'elt i0 ,t9in enine i0 *.8 1. The 0tro1e and

connectin rod lenth are *)) // and +8) // re07ecti3ely. I the enine r!n0 at

+8)) r.7./. deter/ine the /ai/!/ and /ini/!/ 3al!e0 o the 7ri/ary orce0. Al0o

ind o!t the re0!ltant 0econdary orce.

@2. A 0hat *.8 / lon 0!77orted in lei'le 'earin0 at the end0 carrie0 t9o 9heel0 each

o 8) 1 /a00. One 9heel i0 0it!ated at the centre o the 0hat and the other at a


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