Name of the Institute:
Course: Civil Engineering Group
Course Code: CE/CS/CR/CV
Semester : Second
Subject : Applied Science Subject Code : 9007
Duration : 2 Hour Marks : 40
Note: Marks obtained out of 40 should be converted to out of 20 Marks.

Instructions: - 1) All questions are Compulsory.
2) Draw diagrams wherever necessary

Section – I

Q-1 Attempt any four (8 marks)
1) State equations of motion modify these equations for body falling freely.
2) A meter scale is falling down without slipping from vertical position with 2rad/s.
Calculate acceleration with which it falls.
3) State Newton’s third law of motion. What do you think about cancellation of
action & reaction?
4) Define a) work b) impulse.
5) Each man pulls load at an angle 300 with horizontal with 2kn. Find work done in
15m displacement.
6) A railway moving with speed 72 km/hr stops after 2 minutes. Calculate
retardation.
9007

Q-2 Attempt any three. (12 marks)
1) A block of mass 20kg is pulled on a floor by horizontal rope through distance of
20m. If coefficient of friction between block & floor is 0.2, find work done.
2) Equation of SHM is y= 0.3 sin 2? ( t + ? /
Calculate 1) acceleration at distance 1meter, 2) phase of particle after 1second.
3) A body accelerating uniformly at 5red/s2 is found to be rotating at 90red/s at the
end of 12/sec. Determine initial velocity & angle turned during this internal.
4) A railway travels between stations 60km apart in 40 minutes. The train
accelerates uniformly & uniforms retardation. Find the maximum speed attained
during the journey. Plot VT diagram.

Section - II

Q. 1. Attempt any TWO of the following. 04 marks
a. Define hardness and name its type.
b. Name different types of impurities in water.
c. Give the function of gypsum in cement.

Q. 2. Attempt any TWO of the following. 08 marks
a. Explain the causes of scale & sludge formation in boiler.
b. Explain zeolite process for removal of total hardness of water.
c. Define PH. Write down the PH value of extremely acidic & basic solution.
Calculation PH of 2.5 ´ 10– 3 molar NaOH assuming complete ionization.

Q. 3. Attempt any TWO of the following. 08 marks
a. What are the chemical constituents of cement ?
b. Explain the process of setting and hardening of cement.
c. What is lime ? How it is prepared ? Write the uses of lime account. 

Maharashtra State Board of Technical Education
Course Name: Electrical and Electronics Engineering Group
Course Code: EE/EP and ET/EJ/EN/EX/IE/IS/IC/DE/EV/MU/ IU/ED/EI
Semester :- Second
Subject: - Applied science Subject Code: - 9008
Duration: 3 Hours (For Both Sections together) Marks - 80

Section - I

Instructions: - 1) All questions are Compulsory.
2) Draw neat labeled diagrams wherever necessary.
3) Use of non-programmable calculator is allowed.

Q.1) Attempt any Eight of the following: (8x2=16)
1) State Coulomb’s inverse square law.
2) Define dielectric strength, breakdown potential.
3) State types of condenser.
4) State any two applications of optical fibres.
5) Define capacitance, state its SI unit.
6) Draw the configuration of an optical fibre.
7) Define valence band, Fermi energy.
8) Draw energy level diagram for Insulator & semiconductor.
9) A fibre has a core diameter of 4 mm & its core refractive index is 1.43. The
refractive index of cladding is 1.415. Determine Numerical aperture.
10) What is current density in pure semi conductor?
11) When germanium is doped with aluminum, is the result n-type or p-type
semiconductor? Give reason.

Q.2) Attempt any Three of the following: (3x4=12)
1) State any four properties of electric lines of force.
2) Derive an expression for potential due to point charge.
3) Find the equivalent capacitance for the combination of capacitors shown
below(see attachment below for diagram).
Where C1 = 12.0 mF, C2 = 5.30 mF, C3 = 4.50
mF
4) Two point charges 16 mc & 64 mc are
placed 3 m apart in air. Find the
position of point in between them
where intensity due to two charges is equal.

Q.3) Attempt any Three of the following: (3x4=12)
1) State formula to find potential of the earth.
A sphere of diameter 8 cm is placed in the medium of dielectric constant 1.2
and is given charge of 0.024 mc. Find potential at its surface.
2) What is Numerical aperture? Explain with the labeled diagram. State formula to
find numerical aperture.
3) Differentiate between intrinsic & extrinsic semiconductors.
4) State formula for
i) Capacity of parallel plate condenser
ii) Spherical condenser
iii) Cylindrical condenser
iv) Condensers in parallel

Section – II

Q. 4.A. Attempt any FOUR of the following: 08 Marks
1. What is a fuel cell ?
2. Write two applications of glass based optical fibres.
3. What are insulators ? Give their examples.
4. Define solder.
5. Why does the equivalent conductivity of a weak electrolyte increases with
dilution ?

Q. 4.B. Attempt any TWO of the following: 08 Marks
1. What is cementation ? How is it done ? Explain what is meant by
chromozing.
2. Give reason :
i. Impure metals corrodes faster than pure metal under identical
conditions.
ii. Iron corrodes faster than Aluminium, even though Iron is placed
below Al in the electrical series.
3. Write properties and applications of (a) Teflon, (b) Epoxy resins.

Q. 5. Attempt any THREE of the following: 12 Marks
1. Write briefly about (a) Primary Cells, (b) Secondary Cells.
2. How does fuel cell differ from battery ? What are the advantages and limitations
of fuel cell ?
3. What are the raw materials used in making ceramics ? Write properties
and applications of porcelain.
4. Explain the construction and functioning of a denial cell.

Q. 6. Attempt any THREE of the following: 12 Marks
1. Define metallurgy. What are the important ores of copper ?
2. Describe refining of Aluminium by electrolysis. Name the process.
3. i. Define specific conductivity. How is it related to equivalent conductivity
?
ii. What is buffer solution ? What chemicals can be used to make a buffer of pH
5 and pH 10.
4. Write composition, properties and applications of Babbitt metal.

Maharashtra State Board of Technical Education
Course Name: Mechanical Engineering Group & Plastic Engg.
Course Code: ME/PT/PG/AE/MH/FE/PS
Semester :- second
Subject: - Applied science Subject Code: - 9010
Duration: 3 Hours (For Both Sections together) Marks: 80

Section - I

Q1. Attempt any eight of the following: (16 marks)
a) Show with diagram VT diagram for
a) Uniform velocity motion
b ) Uniform retardation motion.
b) State three equations of motions in case of circular motion.
c) If velocity of particle in S.H.M. is V= ? (a^2-x^2)^1/2 calculate velocity of
Particle when it is at (I) mean position when it is at extreme position.
d) State Newton’s second law of motion with mathematical equation.
e) Define with unit work & power.
f) State work energy principle.
g) For surface disorders which of the following method is used & why?.
a)RT b) UT c) LPT
h) State principle of magnetic particle testing method.
i) IF the distance between 2 walls is 16.5 meters, is there a chance of hearing
echo if velocity of sound is considered as 330 m/s ?
j) State how focusing of sound affects the acoustical planning of auditorium?
k) State laws of illumination.
9010

Q 2. Attempt any three of the following: (12 marks)

a) 1. A train changes its speed uniformly from 50 km/hr to 100 km/hr in a
distance of 500m. What is accn ?
2. Draw VT diagram in above case & calculate distance using VT diagram.
b) A flywheel rotating at 300 rpm slows down uniformly to 200rpm completing
200 revolutions retardations. Calculate a) Total time of retardation b) rate
of retardation.
c) 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. Find
the force exerted by the break.
d) Name the NDT methods used in industry. For complete investigation of
material for surface & sub- surface disorders state the four factors on which
NDT methods can be selected.

Q 3 Attempt any three of the following: (12 marks)
a) Describe LPT with it’s a) principle of working b) set up c) sequential steps
d) advantages
b) Out of RT, UT, PT, MT, Thermography, which method is suitable for
investigating disorders in following cases:
1) To locate distance of outside crack from one of the surfaces of
Components.
2) To investigate internal defect like porosity in any type of material.
3) To detect sub-surface disorders up to 2.5mm depth in ferrous material.
4) to investigate in service investigations in pipes of heat exchangers.
c) Define a) loudness with its units b) intensity of sound with its units
Differentiate between loudness & intensity of sound.
c) State four factors affecting acoustical planning of buildings & state how
they are to be adjusted for good acoustics.

SECTION - II

Q. 4.A. Attempt any FOUR of the following 08 marks
1. How alloys are classified ?
2. Define heat treatment of steel.
3. What is the difference between the corrosion of aluminium and magnesium
due to atmosphere?
4. Define viscosity and viscosity index.
5. Name the materials used for formation of Teflon.

Q. 4.B. Attempt any TWO of the following 08 marks
1. Give chemical composition properties and uses of porcelain.
2. Explain extreme pressure lubrication.
3. Write four functions of lubricant used in gears.

Q. 5. Attempt any THREE of the following 12 marks
1. Distinguish between hardening and tempering.
2. Give composition properties and uses of phosphor bronze.
3. Describe tinning process for the protection of metal against corrosion.
4. Write chemical reactions taking place in the zone of reduction of blast
furnace.

Q. 6. Attempt any THREE of the following 12 marks
1. Explain the role of oxide film in atmospheric corrosion.
2. Compare between metal spraying and metal cladding.
3. Explain four factors affecting electrochemical corrosion.
4. Describe the process of dry corrosion.