Friday 13 December 2013

BITSAT - 2014 Model Online Question Paper





If you have any doubts or if you find any errors, please comment. Your help/comments will be appreciated. 



BITSAT 2014 Paper Pattern:
BITSAT 2014 is a Computer Based Online Test.
Duration of BITSAT 2014 will be three hours with 150 multiple choice questions
The BITSAT 2014 Question Paper will be divided into four sections:
First section in Physics with 40 questions
Second section in Chemistry with 40 questions
Third section consists of questions to test the candidate’s English Proficiency with 15 questions and Logical Reasoning with 10 questions
Fourth section in Maths with 45 questions
Each correct answer will get three marks each
One mark will be deducted for each wrong answer.

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Tuesday 22 October 2013

Materials Engineering (MT30001) Assignment - 2 Solutions










Questions:
1) It is necessary to select a ceramic material to be stressed using a three-point loading scheme. The specimen must have a circular cross section, a radius of 3.8 mm (0.15 in.), and must not experience fracture or a deflection of more than 0.021 mm (0.00085 in.) at its center when a load of 445 N (100 lbf) is applied. If the distance between support points is 50.8 mm (2 in.),
which of the materials in Table 12.5 are candidates? The magnitude of the center-point deflection may be computed using the equation
supplied. Choose a ceramic material from the table with proper justification.
Tabulation of Flexural Strength (Modulus of Rupture) and
Modulus of Elasticity for Ten Common Ceramic Materials
Modulus of
Flexural Strength Elasticity
Material MPa ksi GPa 106 psi
Silicon nitride (Si3N4) 250–1000 35–145 304 44
Zirconiaa (ZrO2) 800–1500 115–215 205 30
Silicon carbide (SiC) 100–820 15–120 345 50
Aluminum oxide (Al2O3) 275–700 40–100 393 57
Glass-ceramic (Pyroceram) 247 36 120 17
Mullite (3Al2O3-2SiO2) 185 27 145 21
Spinel (MgAl2O4) 110–245 16–35.5 260 38
Magnesium oxide (MgO) 105b 15b 225 33
Fused silica (SiO2) 110 16 73 11

Soda-lime glass 69 10 69 10

2) A circular specimen of MgO is loaded using a three-point bending mode. Compute the minimum possible radius of the specimen without fracture, given that the applied load is 5560 N (1250 the flexural strength is 105 MPa (15,000 psi), and the separation between load points is 45 mm (1.75 in.).

3) A three-point bending test is performed on a spinel specimen having a rectangular cross section of height d 3.8 mm (0.15 in.) and width b 9 mm (0.35 in.); the distance between support points is 25 mm (1.0 in.).
(a) Compute the flexural strength if the load at fracture is 350 N (80 lbf).
(b) The point of maximum deflection occurs at the center of the specimen and is described by where E is the modulus of elasticity and I is the cross-sectional moment of inertia. Compute deflection at center at a load of 310 N (70 lbf)

4) A continuous and aligned fiber-reinforced composite is to be produced consisting of 45 vol% aramid fibers and 55 vol% of a polycarbonate matrix; mechanical characteristics of these two materials are as follows:
Modulus Tensile
of Elasticity Strength
[GPa (psi)] [MPa (psi)]
Aramid fiber 131 (19 106) 3600 (520,000)
Polycarbonate 2.4 (3.5 105) 65 (9425)
Also, the stress on the polycarbonate matrix when the aramid fibers fail is 35 MPa (5075 psi).
(i) For this composite, compute
(a) the longitudinal tensile strength, and
(b) the longitudinal modulus of elasticity
(ii) Assume that the composite described in
Problem 16.8 has a cross-sectional area of
480 mm2 (0.75 in.2) and is subjected to a longitudinal
load of 53,400 N (12,000 lbf).
(a) Calculate the fiber–matrix load ratio.
(b) Calculate the actual loads carried by
both fiber and matrix phases.
(c) Compute the magnitude of the stress on
each of the fiber and matrix phases.

(d) What strain is experienced by the composite?

5) Calculate the number-average molecular weight of a random poly(isobutylene-isoprene) copolymer in which the fraction of isobutylene repeat units is 0.25; assume that this concentration corresponds to a degree of polymerization of 1500.

6) A random poly(styrene-butadiene) copolymer has a number-average molecular weight of 420,000 g/mol and a degree of polymerization of 6000. Compute the fraction of styrene and butadiene repeat units in this copolymer.

7) (a) Determine the ratio of butadiene to acrylonitrile repeat units in a copolymer having a number-average molecular weight of 250,000 g/mol and a degree of polymerization of 4640.
(b) Which type(s) of copolymer(s) will this copolymer be, considering the following possibilities: random, alternating, graft, and block? Why?

8) A continuous and aligned glass fiber-reinforced composite consists of 40 vol% of glass fibers having a modulus of elasticity of 69 GPa ( psi) and 60 vol% of a polyester resin that, when hardened, displays a modulus of 3.4 GPa ( psi).
(a) Compute the modulus of elasticity of this composite in the longitudinal direction.
(b) If the cross-sectional area is 250 mm2 (0.4 in.2) and a stress of 50 MPa (7250 psi) is applied in this longitudinal direction, compute the magnitude of the load carried by each of the fiber and matrix phases.
(c) Determine the strain that is sustained by each phase when the stress in part (b) is applied.
The modulus of elasticity of the composite is calculated using Equation 16.10a: 30 GPa 14.3 106 psi2
To solve this portion of the problem, first find the ratio of fiber load to matrix load, using Equation 16.11; thus, or
In addition, the total force sustained by the composite may be computed
from the applied stress and total composite cross-sectional area according to
However, this total load is just the sum of the loads carried by fiber and matrix phases; that is, Substitution for from the above yields or whereas Thus, the fiber phase supports the vast majority of the applied load.
(c) The stress for both fiber and matrix phases must first be calculated.Then, by using the elastic modulus for each (from part a), the strain values may be determined. For stress calculations, phase cross-sectional areas are necessary: and Thus,
Finally, strains are computed as Therefore, strains for both matrix and fiber phases are identical, which
they should be, according to Equation 16.8 in the previous development. f  sf Ef 116.4 MPa 69 103 MPa
1.69 10 3 m  sm Em 5.73 MPa 3.4 103 MPa 1.69 10 3  sf  Ff Af 11,640 N 100 mm2 116.4 MPa 116,875 psi2 sm  Fm Am
860 N 150 mm2 5.73 MPa 1833 psi2
Af VfAc 10.421250 mm22 100 mm2 10.16 in.22 Am VmAc 10.621250 mm22 150 mm2 10.24 in.22
Ff Fc Fm 12,500 N 860 N 11,640 N 12700 lbf2 Fm 860 N 1200 lbf2 13.5 Fm Fm 12,500 N Ff Fc Ff Fm 12,500

Tuesday 17 September 2013

Materials Engineering (MT30001) Assignment - 1 Solutions




-----------------------------------------------------------
Q1) Calculate the mass of different Cementites that form upon cooling from the liquidus temperature to the room temperature of a 5wt% Fe-C alloy (White Cast-Iron) of 100 gm.
(Solid Solubility of C in α-Fe is 0.008 at Room Temperature)
----------------------------------------------------------

Q2) Estimate the ratio of the width of Ferrite and Cementite in a Pearlite colony. Consider that the density of Ferrite is 7.87 gm/cm3 and that of Cementite is 7.66 gm/cm3.
 ---------------------------------------------------------

Q3) How many Iron and Carbon atoms exist in a lattice of Fe3C, which has a complex orthorhombic structure?
----------------------------------------------------------


Sunday 4 August 2013

Basic Electronics Laboratory Reports full - IIT Kharagpur

Experiment -1
Part-A    Part-B
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Experiment -2
Part-1    Part-2
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Experiment -3
Part-1    Part-2
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Experiment -4
Part-1    Part-2
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Experiment -5
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


IIT Kharagpur, Basic Electronics, Laboratory, Lab, Basic EC, ECE, 2nd year, KGP, Kharagpur, IIT, Official, Lab records, report, reports, record, graphs, discussion, discussions, 
EXPERIMENT-1A

MEASUREMENT OF RESISTANCE, CLASSIFICATION OF CAPACITORS, DIODE TESTING, 
EXPERIMENT-1B
STUDY ON THEVENIN’S THEOREM AND VOLTAGE DIVIDER CIRCUITS, 

EXPERIMENT-2
FAMILIARISATION WITH SIGNAL GENERATOR, OSCILLOSCOPE AND STUDIES ON RC, CR and RL CIRCUITS
EXPERIMENT-3
STUDIES ON RECTIFIERS AND POWER SUPPLY, 
EXPERIMENT-4
STUDIES ON SMALL SIGNAL CE AMPLIFIER, 
EXPERIMENT-5
STUDIES ON ANALOG CIRCUITS USING OP-AMP

EXPERIMENT-5 [Studies on Analog Circuits using OP-AMP]


EXPERIMENT-4 [Studies on Small Signal CE Amplifier] -Part-2











EXPERIMENT-4 [Studies on Small Signal CE Amplifier] -Part-1


EXPERIMENT-3 [Studies on Rectifiers and Power Supply] -Part-2







EXPERIMENT-3 [Studies on Rectifiers and Power Supply] -Part-1


Friday 19 April 2013

Kinematics of Machines - Term Project [KOM Project]

Kinematics of Machines - Term Project
Following are the details of the KOM project for Mechanical Engineering students.
Weightage: 20%
Date of Submission: 25th April, 2013 
Time: 8:00 AM to 11:50 AM 
Place: Mechanical Department, IIT Kharagpur.
Rules:
  • Students have to make groups of maximum 3.
  • Every group have to submit their own single report.
  • Everything must handwritten and drawn. [Simulations through softwares can be printed]
Contents:
  • Title
  • Model theory
  • Model description 
  • Diagrams, graphs, synthesis etc.
  • Problems encountered & development of model
  • Acknowledgements & citations
  • Any practical uses of model
  • A physical model if possible
  • Group details including names, roll numbers.
References: 

  • Journal of Mechanical Design: ASME DC. Click here
  • Mechanism & Machine Theory books.
For more details click here.

These are the details procured by talks. Publisher is no way responsible for any issues related to these details.



Saturday 30 March 2013

NSS Written Test Question Paper Blueprint

Note: Answer all the questions in Question Paper itself.
Date: _______ FN/AN                         Unit No. ____________
Program Officer: ___________           Group Leader: _________
Village: ___________

1) Write any 5 objectives of NSS? 




2) State the motto of NSS and explain it.




3) Draw a rough sketch of NSS symbol and explain it.





4) The name of NSS newsletter in IIT Kharagpur is _________.

5) To which government ministry, NSS belong to?

6) Write any names of four program officers of NSS, IIT Kharagpur other than your program officer.



7)   “Shashwata Bharat” program was held in the campus on ___________.


8)  “Vivekdisha” program started in Balrampur and Talbagicha is:

a)    Conducting classes through multimedia
b)    Supplying books to the school libraries
c)    Spiritual program organized for the villagers


9) Blood donation camp was organised on ______________ at _______________.

10) Name the alumnus and a social entrepreneur, Magsaysay Award winner of 2011 who visited villages adopted by NSS, this January.



11) Name the neighbouring tribal village which got fire during winter vacation.



12) Name any three volunteers in Editorial Team of NSS Newsletter.



13) Who is the Genius behind Barefoot college as mentioned in NSS Newsletter?



14) Write the date, venue of the following occasions.

a)    National Youth Day program
b)    Republic Day
c)    Inter-School Competition



15) Write the major activities done by your group in this semester.



For answers, click any of these links. Link1,   Link2









Thursday 28 March 2013

Industrial Disaster Management - Quiz-8


1) The vehicle equipped with rescue and personal protective equipment to be used for rescue purposes is known as:
(a) Rescue vehicle
(b) Rescue trolley vehicle
(c) Rescue Tender
Answer: (a) or (c)


2) The Plan prepared for facilitating the prompt return to the normalcy and continuity of operation after a disaster is called:
(a) Rescue Plan
(b) Relief Plan
(c) Recovery Plan
Answer: (c)


3) Which of the following is not the part of Disaster Mitigation Planning?
(a) Emergency Communication
(b) Disaster warning system
(c) Risk and vulnerability analysis
(d) Insurance requirements
Answer: (a)


4) The information required for the preparation of a Disaster Plan is called:
(a) Strategic information
(b) Tactical Information
(c) Operational Information
(d) Statutory information
Answer: (a)


5) One of the mostly used ways to communicate risk of any hazardous material is:
(a) MSDS
(b) Pareto chart
(c) Emergency Information panel
Answer: (a)


6) Area where head count are usually taken after the evacuation of the affected area is known as:
(a) Shelter area
(b) Head-count area
(c) Mustering area
(d) Rescued area
Answer: (c)


7) Which of the following is an example of fixed hazard?
(a) Toxic Gas release
(b) Explosion
(c) Pool fire
Answer: (c)


8) The technique utilized in analyzing disaster response preparedness in industry is called:
(a) HAZOP
(b) ER-HAZOP
(c) What-if
(d) Disaster Mapping
Answer: (b)


9) The type of personal protection required when the greatest potential for exposure to hazards exists is:
(a) Level-A
(b) Level-B
(c) Level-C
(d) Level-D
Answer: (a)


10) The first responders who usually experience strong emotional feelings while handling emergencies is said to be under:
(a) Critical stress
(b) Critical Incident Stress
(c) Critical Incident Recall
Answer: (b)


11) The best way to audit the efficacy of the disaster preparedness is:
(a) Walk-through survey
(b) Table-top exercises
(c) Mock drills at field
Answer: (c)


12) Which of the following situation arises to the human body while responding to emergencies?
(a) Body rapidly produces Adrenaline
(b) Heart beat increases
(c) Temperature increases
(d) All of the above
Answer: (d)











Industrial Disaster Management - Quiz-7


1) Under which regulation the local authority is responsible for preparation of an offsite Emergency plan?
(a) MSIHC Rules
(b) Hazardous Chemical handling Rules
(c) PMP Acts & Rules
Answer: (a)


2) Which of the following crisis groups are responsible for preparation of offsite response plan at local level?
(a) State Crisis Group
(b) Local Crisis Group
(c) District Crisis Group
Answer: (b)


3) The purpose of Hazard maps is to identify and display the location of:
(a) Hazard zones
(b) Risk zones
(c) Vulnerability zones
(d) Decontamination zones
Answer: (a)


4) Immediate danger area following a toxic gas leak is based upon the substance's:
(a) IDLH
(b) STEL
(c) TLV
(d) Ceiling value
Answer: (a)


5) The maximum injury causing distance following a toxic gas release will be dependent on the material's:
(a) IDLH
(b) STEL
(c) TLV
(d) Ceiling value
Answer: (b)


6) Evacuation maps are made based on concentration contours of a toxic release in:
(a) Downwind direction
(b) Cross-wind direction
(c) both the directions
Answer: (c)


7) In Uncertainty analysis, if the uncertainties are related to the chances of an incident happening, it is called
(a) Aleatory uncertainty
(b) Epistemic uncertainty
Answer: (a)


8) An area surrounding an incident site where public may be exposed to dangerous and life threatening concentrations of toxic materials is known as:
(a) Initial isolation zone
(b) Protective zone
(c) Decontamination zone
Answer: (a)


9) An emergency action code designed to help the fire fighters to know readily the actions to be taken in case of fire or spillage of a particular hazardous substance is called:
(a) HAZCHEM code
(b) UN Number
(c) CAS Number
Answer: (a)


10) How many Hazard Class Labels exist for different hazardous substances?
(a) 10
(b) 9
(c) 7
(d) 5
Answer: (b)


11) The written emergency information carries by the driver of all vehicles carrying hazardous substances is known as:
(a) HAZCHEM
(b) TREMCARD
(c) Emergency Information pane
Answer: (b)


12) Emergency Information Panel contains:
(a) Class Lebel
(b) UN Number
(c) HAZCHEM code
(d) All the above
Answer: (d)












Wednesday 27 March 2013

CAM NOTES







Download this notes in this link: Link-1  Direct Link  Link-2

Industrial Disaster Management - Quiz-6

1) Secondary fires are caused due to which of the following phenomenon?
(a) Flash back
(b) Burn-back
(c) Fire spread
(d) domino effect
Answer: (b)


2) What is the safe level of heat radiation (in Kw/m^2)for an average human being?
(a) 1.75
(b) 2.8
(c) 6.4
(d) 14.4
Answer: (a)


3) A Deep burn, characterized by destruction of all skin layers is termed as:
(a) 1st degree burn
(b) 2nd degree burn
(c) 3rd degree burn
Answer: (c)


4) A Probit equation used for calculation of effects due to:
(a) Flammability
(b) Toxicity
(c) both Flammability and toxicity
Answer: (c)


5) In Risk estimation, a F-N curve is referred to depict which of the following risks?
(a) Individual Risk
(b) Group Risk
(c) Process Risk
Answer: (b)

6) The uncontrolled sudden violent escape of well fluids during oil and gas exploitation activities is known as:
(a) Blow out
(b) Burn out
(c) explosion
(d) Blast out
Answer: (a)

7) Which of the following classifications of blowout causes minor level of pollution?

(a) Class I
(b) Class II
(c) Class IV
(d) Class V
Answer: (d)

8) A normally directional well drilled to establish a direct communication with the well under blow out, is known as:

(a) New well
(b) Rehabilitatory well
(c) Relief well
(d) killing well
Answer: (c)

9) Lethality (Pr) can be calculated from Probit equation by: 
(a) Pr = a + b ln(c/t)
(b) Pr = a + b ln(c.t)
(c) Pr = a + b ln(c+t)
(d) Pr = a + b ln(t/c)
Answer: (b)