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tra+*'itted to the hll whe+ ya5ht pit5he* with a 'a:i'' a+lar
velo5ity of # rad>*2-hat i*
the effe5t of thi* 5ople7 (#0)
92 The trbi+e rotor of a *hip ha* a 'a** of %" to++e* a+d a
radi* of yratio+ "21/2It* *peed i*
%"""rp'2The *hip pit5he* 0@ above a+d below the horio+tal
po*itio+ 2+e 5o'plete o*5illatio+
ta
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#82 A *i+le 5yli+der verti5al e+i+e ha* a bore of 8""'' a+d a
*tro'%25al5late, (i) Cra+
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#02 Defi+e 5oeffi5ie+t of *teadi+e**2
#12 -hy flywheel* are +eeded i+ fori+ a+d pre**i+
operatio+*7
#2 -hat i* 5a' dy+a'i5*7
#!2 Defi+e +bala+5e a+d *pri+ *re2
%"2 Defi+e wi+dp2 -hat i* the re'edy for 5a'*haft wi+dp7
%#2 -hat are the effe5t a+d 5a*e* of wi+dp7
2 -hat i* 'ea+t by i*o5hro+o* 5o+ditio+* over+or7
PART-B (GO"ERNOR)
#2 A porter over+or ha* e6al ar'* ea5h %/"'' lo+ a+d pivoted o+
the a:i* of rotatio+2 Ea5h
ball ha* a 'a** of /
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12 I+ a *pri+ 5o+trolled over+or, the 5o+trolli+ for5e 5rve i* a
*traiht li+e2 -he+ the ball*
are 9""'' apart, the 5o+trolli+ for5e i* #%""N a+d whe+ %""''
apart, the 5o+trolli+ for5e i*
9/"N2Deter'i+e the *peed at whi5h the over+or r+* whe+ the ball*
are %/"'' apart2 -he+i+itial te+*io+ o+ the *pri+ wold be re6ired
for i*o5hro+i*'* a+d what wold be the *peed2
Ta
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UNIT-I" (BALANCING)
PART-A (2 !arks)
#2 -hat i* 'ea+t by bala+5i+ of rotati+ 'a**e*7
%2 -hy rotati+ 'a**e* are to be dy+a'i5ally bala+5ed7
82 Defi+e *tati5 bala+5i+2
92 Defi+e dy+a'i5 bala+5i+2
/2 State the 5o+ditio+* for *tati5 a+d dy+a'i5 bala+5i+2
02 State the 5o+ditio+* for 5o'plete bala+5e of *everal 'a**e*
revolvi+ i+ differe+t pla+e* of a
*haft2
12 -hy 5o'plete bala+5i+ i* +ot po**ible i+ re5ipro5ati+
e+i+e7
2 Ca+ a *i+le 5yli+der e+i+e be flly bala+5ed7 -hy7
!2 Differe+tiate betwee+ the +bala+5ed for5e 5a*ed de to rotati+
a+d re5ipro5ati+ 'a**e*2
#"2 -hy are the 5ra+
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betwee+ *55e**ive 'a**e*9/@, 1/@, a+d#8/@2?i+d the po*itio+ a+d
'a+itde of bala+5e 'a**
re6ired if it* radi* of rotatio+ i* "2%/'2 (#0)
82 The data for three rotati+ 'a**e* are ive+ below$ . #G9
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UNIT-" ("IBRATIONS)
PART-A (2 !arks)
#2 -hat are the 5a*e* a+d effe5t of vibratio+7
%2 Defi+e fre6e+5y, 5y5le, period a+d free vibratio+2
82 -hat are the differe+t type* of vibratio+*7
92 State differe+t 'ethod of fi+di+ +atral fre6e+5y of a
*y*te'2
/2 -hat i* 'ea+t by free vibratio+ a+d for5ed vibratio+7
02 Defi+e re*o+a+5e2
12 -hat i* 'ea+t by deree* of freedo' i+ a vibrati+ *y*te'7
2 -hat i* the +atral fre6e+5y of *i'ple *pri+ 'a** *y*te'7
!2 Deter'i+e the +atral fre6e+5y of 'a** of #"
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%82 Defi+e da'pi+ ratio or da'pi+ fa5tor2
%92 Defi+e loarith'i5 de5re'e+t2
%/2 4ive e6atio+ for da'pi+ fa5tor a+d da'ped fre6e+5y d2
%0 -hat i* 'ea+t by har'o+i5 for5i+7
%12 -hat i* the relatio+*hip betwee+ fre6e+5ie* of +.da'ped a+d
da'ped vibratio+7
%2 -hat i* 'ea+t by dy+a'i5 'a+ifier or 'a+ifi5atio+ fa5tor7
%!2 Defi+e tra+*'i**ibility2
8"2 Defi+e tra+*'i**ibility ratio or i*olatio+ fa5tor2
8#2 -hat i* vibratio+ i*olatio+7
8%2 S+) B* Tra+*'i**ibility for differe+t vale* of da'pi+
fa5tor2
PART-B "IBRATION) (1 !arks)
#2 Derive a+ e:pre**io+ for the +atral fre6e+5y of the free
lo+itdi+al vibratio+ by
(i)E6ilibri' 'ethod (ii ) E+ery 'ethod (iii)Fayleih;* 'ethod
(#0)
%2 I+ a *i+le deree of da'ped vibratio+ *y*te' a **pe+ded 'a**
of *2 ?i+d,(i )Criti5al da'pi+ 5oeffi5ie+t (ii) the da'pi+
fa5tor
(iii)the +atral fre6e+5y of da'ped vibratio+ (iv)the loarith'i5
de5re'e+t(v)the ratio of two
5o+*e5tive a'plitde (vi )the +'ber of 5y5le after whi5h the
orii+al a'plitde i* red5ed to%" per5e+t2
02 A+ i+*tr'e+t vibrate* with a fre6e+5y of #H whe+ there i* +o
da'pi+2 -he+ the da'pi+i* provided, the fre6e+5y of da'ped
vibratio+ wa* ob*erved to be "2!H2 ?i+d, (i) da'pi+
fa5tor (ii ) loarith'i5 de5re'e+t2 (#0)
12 ?i+d the e6atio+ of +otio+ for the *pri+ 'a**.da*hpot *y*te'
for the 5a*e* whe+ (i) G %(ii) G # a+d (iii ) G "282 The 'a** M';
i* di*pla5ed by a di*ta+5e of 8"'' a+d relea*ed (#0)
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2 etwee+ a *olid 'a** of "' a+d e6ivale+t vi*5o*
da'pi+5oeffi5ie+t of 88"N.*e5>'2 Deter'i+e +da'ped a+d the
da'ped +atral fre6e+5ie* of the
*y*te' i+ verti5al dire5tio+2 (#0)
!2 (i) A 5a+tilever *haft /"'' dia'eter a+d 8""'' lo+ ha* a di*5
of 'a** #""'%2SDeter'i+e the fre6e+5y of
lo+itdi+al a+d tra+*ver*e vibratio+ of the *haft2 (#")
(ii)E:plai+ the *'% (#0)
#2A 'a** of /"
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da'pi+ 5oeffi5ie+t of #N>''>* *ed to da'ped the
vibratio+*, 5al5late al *teady *tate
(i)A'plitde of vibratio+* at /""rp' e+i+e *peed2(ii )The *peed
of the drivi+ *haft at whi5h
re*o+a+5e will o55r*2 (#0)
12 A verti5al *i+le *tae air 5o'pre**or havi+ a 'a** of /""
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CHRISTU JYOTI INSTITUTE OF TECHNOLOGY & SCIENCE
(Approved by AICTE, New Delhi & Affiliated to JNTU
Hyderabad)IS Certified !""#$%""
Colo'bo Naar, e*hwa+thapr, Ja+ao+, -ara+al./"0 #01.A23
#2 a) E:plai+ D;Ale'bert* pri+5iple a+d *tate why i* *ed
b) A p+5hi+ pre** i* re6ired to p+5h 9"'' dia'eter hole* i+ a
plate of 8"''thi5
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A for wheeled trolley 5ar ha* a total 'a** of 8"""
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E:plai+ the dire5t a+d rever*e 5ra+< 'ethod of a+aly*i* of
radial li+e e+i+e* for pri'ary
a+d *e5o+dary for5e*2
Derive a+ e:pre**io+ for re*lta+t +bala+5ed for5e i+ a partially
bala+5ed *i+le 5yli+dere+i+e2
A B.twi+ e+i+e ha* the 5yli+der a:e* at riht a+le* a+d 5o++e5ti+
rod* operate* a
5o''o+ 5ra+
