Maharashtra State Board of Technical Education 2012-2nd Sem Diploma Civil Engineering for GroupSubject Applied science – Section I - Physics (12020) - Question Paper

SCHEME - E
Sample ques. Paper
Course Name : Civil Engineering Group
Course Code : CE/CS/CR/CV
Semester : Second
Subject : Applied science – part I - Physics (12020)
Time : three Hours (For Both parts together) Marks: 50


Instructions:
1] All the ques. are compulsory.
2] Figures to the right indicate Full marks.
3] Draw Diagrams wherever necessary.


Q. 1) Attempt any EIGHT. [Marks 18]
a) Show with diagram VT diagram for
i) Uniform velocity motion
ii) Uniform retardation motion.
b) State thr ee equations of motions in case of circular motion.
c) I f velocity of particle in S.H.M. is V=(a² - x²)^1/2 compute velocity of Particle when it is at (I) mean position when it is at extreme position.
d) State Newton's 2nd legal regulations of motion with mathematical formula.
e) describe with unit work & power.
f) For surface disorders which of the subsequent method is used & why?
a) RT b) UT c) LPT
g) State principle of magnetic particle testing method.
h) IF the distance ranging from two walls is 16.5 meters, is there a chance of hearing echo if
velocity of sound is considered as 330 m/s ?
i) State laws of illumination.
j) State how focusing of sound affects the acoustical planning of auditorium?
k) describe nanoscale & nanometer.

Q.2) Attempt any 4 [Marks 16]
a) i. A train modifications its speed uniformly from 50 km/hr to 100 km/hr in a distance of
500m. What is acceleration?
ii. Draw VT diagram in above case & compute distance using VT diagram.
b) A flywheel rotating at 300 r pm slows down uniformly to 200rpm completing 200
revolutions retardations. compute a) Total time of retardation b) rate of retardation.
c) Represent displacement, velocity and acceleration of a particle in S.H.M. for particle
starting from mean position.
d) A bullet of mass 450gm leaves the barrel of the gun with a muzzle velocity of 700m/s
if the length of the barrel is 80 cm obtain the impulse and impulsive force.
e) describe a) loudness with its units b) intensity of sound with its units.
Differentiate ranging from loudness & intensity of sound
f) State applications of nanotechnology.


Q.3 Attempt any FOUR. [Marks 16]
a) discuss graphical representation of work done.
b) A train weighing 19,60000N moves on the track at 16.67 m/s. after the steam is shut
off, it is brought to rest by applying breaks in 500m. obtain the force exerted by the
break.
c) define LPT with it's

i) principle of working
ii) set up
iii) sequential steps advantages
d) Out of RT, UT, PT, MT, Thermography, which method is suitable for investigating
disorders in subsequent cases.
i) To locate distance of outside crack from 1 of the surfaces of Components.
ii) To investigate internal defect like porosity in any kind of material.
iii) To detect sub-sur face disorders up to 2.5mm depth in ferr ous mater ial.
iv) In service investigations in pipes of heat exchangers.
e) State 4 factors affecting acoustical planning of buildings & state how they are to be
adjusted for good acoustics.
f) Draw ray diagr am of Bunsen's photometer

Earning:   Approval pending.