ndia n For e sl Se rv ice x a m i a t i o ~ ·2 3 A - J G P T - M - D JF O - A I i me Allow Thre e Ho urs I C I V I L E N G I N E E R I N G P a p e r - 1 Q U E S T IO N P A P E R S P E C I F I C I NS TR U C T IO NS Max i mum Mar k s : 2 P l ease read each of t he fo llow ing i nstru ction s car efull y b e fore a ttem ptin g que stion s T here are E I G H T q u estio n s in all, o ut of wh i ch F I V E are to be a ttem pted . Qu e stio n n o . 1 a n d 5 a re c o mpu l sory . Ou t o f t h e re m ain in g S IX qu e sti.Q _n s T H R E E ar e to be at te mp te d se le ctin g at le ast O N E qu e s tion from each of t h e tw o Se c tion s A a n d B . A t tem p ts o f qu e st ions shal l b e c o un t ed in c hron o lo g ic al o r der. U nle s s str u ck o f f, at te mp t o f a q ue s ti on s h all be co u nted even i f a tt em p t ed p a rtly . An y p ag e or p o rtio n of t he p a ge l e ft b la nk in the an s w er b ook m ust be clea rl y st r uck o ff. All q ue s t ions c arry eq u a l m ar ks. T he nu mb e r of m ark s ca r r ied by a q uest io n p art is ind i cate d ag a i nst it. An s w ers m ust b e w ritte n in E N G L IS H on l y. U nles s oth e r-wi se m e ntio n ed, sy mb o ls a nd no t ation s ha ve th e ir u su al s t and ar d m e anin g s. A ssu m e s u itab le da ta , i f n ec e s sary and i ndic a te th e sa m e cl e arly N ea t sk e tche s ma y be d raw n , w h erev e r re q uire d. S E C T I O N - A l( a ) Co m p u te t h e ben d i ng m o m e n t an d t o rs io n a l m o m ent d ia g r am o f th e c a n tilev e r c ir c u l a r b o w gird e r in the s h a p e o f q u a d r ant of a c ircl e o f r adiu s 2 m an d c a rr y in g co n c e n t r ated load ( n o r m a l to p l a n e of t h e s t r uctu r e ) o f 2 0 k a t th e fr e e e n d . 8 Q . l(b) W ri t e do w n th e s ti ffne s s m a trix o f a r u s s m e m be r in a p la n e t ru ss in m e m b e r o ri e nted is. W h a t will be i t s fo r m f o r s t ru c tu r e o r i ente d c o o rdin a te a xis ? T a k e L = L e n g th of th e m e m b e r , A = A re a of c r oss- s ecti o n , E Y o u ng s m o dulu s , a = a n g le b e tw e e n m e m b e r a x i s an d s t ru c tu r e o r i ente d ax i s. 8 Q I ( c ) F in d t h e t i m e p e r i o d o f o s c i llati o n s fo r a bloc k o f m a s s m han g s a s s h o w n i n F ig . I a n d 2 . 4 +4 i www.examrace.com
