FACT Placement-Paper on 17 July 2013

Discussion in 'Latest Placement papers' started by krishna, Oct 19, 2013.

  1. krishna

    krishna Banned

    Electronics and Electrical Engg Questions with answers



    1. Two 100-W, 200-V lamps are connected in series across a 200-V supply. The total power consumed by each lam will be _____ watts.

    (a) 200

    (b) 100

    (c) 50

    (d) 25 (Ans)



    2. Kirchhoff’s voltage law is nt valid for a non-linear network.

    (a) True

    (b) False (Ans)



    3. The material used for fuse must have

    (a) low melting point and low specific resistance

    (b) high melting point and low specific resistance

    (c) low melting point and high specific resistance (Ans)

    (d) none of these



    4. If a piece of metal wire is stretched, its resistance will increase.

    (a) True (Ans)

    (b) False



    5. The usual value of the surge impedance of a telephone line is ____ ohm.

    (a) 75 (Ans)

    (b) 600

    (c) 500

    (d) 250



    6. In mesh analysis of a network, all the mesh current must necessarily be either clock-wise or anticlock-wise.

    (a) True (Ans)

    (b) False



    7. The purpose of introducing reactor in the ignition circuit of mercury are rectifier is to limit the

    (a) voltage of the circuit

    (b) rate of change of flux in the circuit

    (c) current in the circuit (Ans)

    (d) rate of change of current in the circuit



    8. An uncharged capacitor is connected across a charged one. There will flow an impulsive current through the circuit.

    (a) True (Ans)

    (b) False



    9. In the case of a lossy capacitor, series equivalent resistance value will be

    (a) small

    (b) large (Ans)

    (c) very small

    (d) none of these



    10. Time constant of an R- C circuit increases if the value of resistance is

    (a) decreased

    (b) increased (Ans)

    (c) neither (a) nor (b)

    (d) either (a) nor (b)



    11. If R, L and C denote resistance, inductance and capacitance respectively, the quantity RC has the same dimensions as that of R/L.

    (a) True

    (b) False (Ans)



    12. If R, L and C denote resistance, inductance and capacitance respectively, the quantity CR2 has the dimensions of L.

    (a) True (Ans)

    (b) False



    13. Sparking between contacts can be reduced by inserting a

    (a) capacitor in parallel with contacts (Ans)

    (b) resistance in the line

    (c) capacitor in series with contacts

    (d) none of these



    14. A battery will not cause any current to flow, when it is connected across a pure capacitor, in the steady state even if the capacitor value varies with time.

    (a) True

    (b) False (Ans)



    15. Voltage stress is maximum in a cable at the surface of the

    (a) insulator

    (b) sheath

    (c) conductor (Ans)

    (d) none of these



    16. When two capacitors C1 and C2 are connected in series, the effective capacitance is C1 + C2

    (a) True

    (b) False (Ans)



    17. Sparking occurs when a load is switched off because the circuit has high

    (a) resistance (Ans)

    (b) inductance

    (c) capacitance

    (d) none of these



    18. The flux linked with a coil of inductance L carrying a current is d/dt (Li) .

    (a) True

    (b) False (Ans)



    19. The coefficient of coupling between two air core coils depends on

    (a) mutual inductance and self inductances of the two coils (Ans)

    (b) mutual inductance between two coils only

    (c) self inductances of the two coils only

    (d) none of these



    20. The location of lightning arrestor is

    (a) away from the transformer

    (b) near the transformer (Ans)

    (c) near the circuit breaker

    (d) none of these



    21. A conductor of length 1 metre moves at rt. angles to a magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced e.m.f. in the conductor will be _______ volt.

    (a) 75

    (b) 25 (Ans)

    (c) 50

    (d) 100



    22. In electrical machines, laminated cores are used with a view to reducing

    (a) eddy current loss (Ans)

    (b) hysteresis loss



    23. A battery

    (a) always delivers power

    (b) always absorbs power

    (c) absorbs power when the internal resistance is non-zero but delivers power when the internal resistance is zero

    (d) can absorb or deliver power depending upon the circuit to which it is connected (Ans)



    24. When one wants to connect two batteries in parallel to draw larger current than what can be supplied by one battery, it suffices to ensure that their e.m.f.s. are equal.

    (a) True (Ans)

    (b) False



    25. An ideal battery can supply infinite current

    (a) True

    (b) False (Ans)



    26. Decibel is a

    (a) unit of voltage

    (b) unit of power

    (c) ratio of power (Ans)

    (d) none of these



    27. dBm is a

    (a) ratio of power (Ans)

    (b) unit of power

    (c) unit of voltage

    (d) none of these





    28. Decibel is a unit of

    (a) frequency

    (b) impedance

    (c) power ratio (Ans)

    (d) none of these



    29. The absolute unit of resistance is of the dimension of

    (a) velocity (Ans)

    (b) length

    (c) acceleration

    (d) none of these



    30. The absolute unit of inductance is of the dimension of

    (a) time

    (b) length (Ans)

    (c) mass

    (d) none of these
  2. krishna

    krishna Banned

    Mechnical Engineering Solved Papers



    1. What do you understand by points Ac1, Ac3, Ac4, Ar1, Ar3 and Ar4.

    Ans. Ac1 represents the beginning of transformation of ferrite to austenite on heating. Ac3 the end of transformation of ferrite to austenite on heating and Ac4 the change from austenite to delta iron on heating. On cooling the critical points are referred to as Ar4, Ar3 and Ar1 respectively.

    2. What is the percentage of chromium in 18 : 4 : 1 HSS ?

    Ans. 4%

    3. What is stellite ?

    Ans. It is a non-ferrous cast alloy containing cobalt, chromium and tungsten.

    4. Which rays are produced by cobalt-60 in industrial radiography ?

    Ans. Gamma rays.

    5. What are killed steels and what for these are used ?

    Ans. Killed steels are deoxidized in the ladle with silicon and aluminium. On solidification no gas evolution occurs in these steels because they are free from oxygen.

    6. What is critical temperature in metals ?

    Ans. It is the temperature at which the phase change occurs in metals.

    7. Car tyres are usually made of ________?

    Ans. Styrene-butadine rubber.

    8. What is the structure of pure iron and whether it is soft or hard ?

    Ans. Ferrite and it is soft.

    9. Which elements increase the corrosion resistance of steel ?

    Ans. Chromium and nickel.

    10. What causes hardness in steel ? How heat treatment alters properties of steel ?

    Ans. The shape and distribution of the carbides in the iron determines the hardness of the steel. Carbides can be dissolved in austenite is the basis of the heat treatment of steel. If steel is heated above the A1 critical temperature to dissolve all the carbides, and then cooled, suitable cooling thought the cooling range will produce the desired size and distribution of carbides in the ferrite, imparting different properties.

    11. Explain the formation of microstructures of pearlite, bainite and martensite in steel.

    Ans. If austenite containing about 0.80 percent carbon is slowly cooled through the critical temperature, ferrite and cementite are rejected simultaneously, forming alternate plates or lamellae. This microstructure is called pearlite. At temperatures just belot the A1 the transformation from austenite to pearlite may take an appreciable time to initiate and complete, but the product will be lameller pearlite. As the transformation temperature is lowered, the time to initiate transformation shortens but the product is pearlite of increasing fineness, and at temperatures approaching 5500 C it cannot be resolved into its lamellar constituents. Further decrease in transformation temperature causes a lengthening of the incubation period and a change in structure of the product to a form known as "bainite".

    If the temperature is lowered sufficiently, the diffusion controlled nucleation and growth modes of transformation are suppressed completely and the austenite transforms by a diffusionless process in which the crystal lattice effectively shears to a new crystallographic configuration known as "martensite". This phase has a tetragonal crystal structure and contains carbon in supersaturated solid solution.

    12. How with alloying of steel it is possible to a achieve properties which can not be achieved with heat treatment ?

    Ans. A prerequisite to the hardening of steels is that martensite should be formed on cooling, but this can only be achieved if the rate of cooling is great enough to suppress the formation of pearlite or bainite and in plain carbon steels this can be achieved by quenching relatively small specimens in water. Larger specimens, however, cannot be cooled sufficiently rapidly though the whole section because of the limited rate at which heat can be extracted through the surface of the piece. However, this difficulty can be overcome by alloying the steels to modify their transformation characteristics. For example, some alloying additions such as nickel and molybdenum reduce the rate of diffusion so that pearlite formation is suppressed in favour of the martensitic transformation.

    13. What are the major effects of alloying elements ?

    Ans. (1) To alter the transformation temperatures and times

    (2) To modify the room temperature and elevated temperature strengths of given structures by (a) stiffening the crystals and (b) introducing complex precipitates which tend to harden the steel.

    (3) To modify the type of oxide film formed on the surface of the steel and thereby affect its corrosion resistance.

    14. What is the difference between austenite stabilisers and ferrite stabilisers ?

    Ans. Austenite stabilisers have the effect of extending the temperature range over which austenite is formed. Such elements are carbon, manganese, nickel, copper and cobalt.

    Ferrite stabilisers have the effect of extending the temperature range over which alpha and delta ferrite are formed, which consequently reduces temperature range over which austenite is formed. Such elements are silicon, chromium, molybdenum, tungsten, titanium and niobium.

    15. What are the effects of carbon on the properties of steel.

    Ans. In general, an increase in carbon content produces higher ultimate strength and hardness but lowers ductility and toughness of steel alloys. Carbon also increases air-hardening tendencies and weld hardness, especially in the presence of chromium. In low-alloy steel for high-temperature applications, the carbon content is usually restricted to a maximum of about 0.15% in order to assure optimum ductility for welding, expanding, and bending operations. To minimize intergranular corrosion caused by carbide precipitation, the carbon content of austenitic (18-8 type) alloys is limited in commercial specifications to a maximum of 0.08%, or even less, i.e. 0.03% in the extremely low - carbon grades used in certain corrosion-resistant applications.

    In plain carbon steels in the normalised condition, the resistance to creep at temperatures be low 4400 C appears to increase with carbon content up to 0.4% carbon, at higher temperatures there is but little variation of creep properties with carbon content.

    An increase in carbon content lessens the thermal and electrical conductivities of steel and increases its hardness on quenching.

    16. What is the role of silicon as alloying element in steels ?

    Ans. Silicon contributes greatly to the production of sound steel because of its deoxidizing and degasifying properties. When added in amounts up to 2.5%, the ultimate strength of the steel is increased without loss in ductility. Silicon in excess of 2.5% causes brittleness, and amounts higher than 5% make the steel non-malleable.

    Resistance to oxidation and surface stability of steel are increased by the addition of silicon. These desirable effects partially compensate for the tendency of silicon to lower the creep properties of steel. Silicon increases the electrical resistivity of steel and decrease hysteresis losses.
  3. krishna

    krishna Banned

    FACT aptitude questions for practice

    1) In an examination Joshita scores a total of 738 marks out of 1175. What is her approximate percentage in the annual examination ?

    Explanation :

    Percentage of marks

    = (738 / 1175) * 100 = 62.8 = 63

    Ans : 63


    2) Ms. Muskaan Daanish deposites an amount of Rs. 45800 to obtain p.c.p.a for 5 years. What total amount will Ms. Muskaan Daanish gets at the end of 5 years ?

    Explanation :

    Simple interest

    = (Principal * Time * Rate) / 100

    = (45800 * 5 * 12 ) / 100 = Rs. 27480

    = Rs. (45800 + 27480)

    = Rs. 73280

    Ans : Rs. 73280


    3) There are 6650 employees in an organisation, out of which 32% branches of the organisation How many such employees are there who got tranferred ?

    Explanation :

    Number of employees transferred

    = 32% of 6650

    = 6650 * 32 / 100 = 2128

    Ans : 2128


    4) Prateek invests Rs. 5730, which is 30% of the monthly income, in life insurance policy. What is his monthly income :

    Explanation :

    Let Prateek’s monthly income be x

    x * 30 / 100 = 5730

    x = 5730 * 100 / 30 = Rs. 19100

    Ans : Rs. 19100


    5) If the cost of 16 kgs of wheat is Rs. 384. What is the cost of 92 kilograms of wheat ?

    Explanation :

    CP of 16 kg of wheat

    = Rs. 384

    CP of 92 kg of wheat

    = Rs. (384 * 92) / 16 = Rs. 2208

    Ans : Rs. 2208

    6) 15 * 35 / 25 + 12 = ?

    Explanation :

    ? = (15 * 35) / 25 + 12

    = 21 + 12 = 33

    Ans : 33


    7) (0.5)² = ?

    Explanation :

    ? = 0.5 * 0.5 = 0.25

    Ans : 0.25

    8) (85)² – 85 = ?

    Explanation :

    ? = (85)² – 85

    = 85 (85 – 1) = 85 * 84 = 7140

    Ans : 7140



    9) 372 / 56 * 7 = ?

    Explanation :

    ? = 372 / 56 * 7

    = 46.5

    Ans : 46.5


    10) 6767 + 4892 = ? – 3285

    Explanation :

    ? – 3285 = 6767 + 4892

    ? – 3285 = 11659

    ? = 11659 + 3285

    = 14944

    Ans : 74944
  4. krishna

    krishna Banned

    General Awareness Questions with answers



    1. Who has taken over as the Director of Operations at the Bangalore based National Cricket Academy in place of his predecessor Dave What more who joined IPL team Kolkata Knight Raiders recently?

    (a) Kapil Dev
    (b) Madan Lal
    (c) Sanjay Manjrekar
    (d) Sandeep Patil
    (e) Karsan Ghavri

    Sandeep Patil



    2. Of which two sports have actors Mohanlal and Mammootty become goodwill ambassadors in Kerala recently?

    (a) Football & Boat racing

    (b) Judo & Table Tennis
    (c) Basketball & Cricket
    (d) Athletics & Volleyball
    (e) Wrestling & Weightlifting

    Athletics & Volleyball



    3. Olympic gold medallist Abhinav Bindra will be the new face to promote guns made by which company?
    (a) Mouser
    (b) Walther
    (c) Uzi
    (d) Colt
    (e) Smith & Wesson

    Walther



    4. Mahela Jayawardene hit his sixth Test double century in the first Test of the series between India and Sri Lanka at Ahmedabad recently. Who holds the record of exceeding the score of 200 runs in an inning for the highest number of times in Test Cricket till date?

    (a) Don Bradman
    (b) Brian Lara
    (c) Wally Hammond
    (d) Marvan Atapattu
    (e) Javed Miandad

    Don Bradman



    5. Who won the Shanghai Masters Tennis tournament organised recently?
    (a) Andy Murray
    (b) Nikolay Davydenko
    (c) Rafael Nadal
    (d) Roger Federer
    (e) Novak Djokovic

    Nikolay Davydenko



    6. Sachin Tendulkar has the second longest One Day International (ODI) career currently. Who holds the record for the longest ODI career spanning 20 years and 272 days?
    (a) Allan Border
    (b) Kapil Dev
    (c) Javed Miandad
    (d) Brian Lara
    (e) Andrew Flintoff

    Javed Miandad



    7. China beat India in the final to win the Asia Cup Hockey Championship for Women in Bangkok recently. Which Indian player was declared the player of the tournament?
    (a) Suraj Lata Devi
    (b) Subhadra Pradhan
    (c) Mamta Kharab
    (d) Madhu Yadav
    (e) S. Omana Kumari

    Subhadra Pradhan



    8. Who won the 2009 FIFA Under-17 World Cup in Abuja, Nigeria recently?
    (a) Netherlands
    (b) Switzerland
    (c) Brazil
    (d) Portugal
    (e) Mexico

    Switzerland



    9. Which of the following statements about the Federation Cup Women’s Tennis Team tournament organised recently is incorrect?
    (a) The final was played at Reggio Calabria
    (b) Russia was the losing finalist
    (c) The final was played on clay court
    (d) The losing finalist was unable to win a single match in the final
    (e) Flavia Pennetta, Francesca Schiavone, Sara Errani and Roberta Vinci were members of the winning team

    Russia was the losing finalist



    10. Which of the following statements about the schedule of the 2011 World Cup announced recently are correct?
    I. India and Pakistan are in the same group
    II. Bangladesh will host two quarter-finals while India and Sri Lanka will host one quarter-final each
    III. Opening ceremony of the World Cup will be organised in Dhaka
    (a) I only
    (b) I and II only
    (c) I and III only
    (d) II and III only
    (e) I, II and III

    II and III only



    11. Which of the following was selected as the official broadcaster of 2010 Commonwealth Games recently?
    (a) Satellite Information Service Live
    (b) International Games Broadcast Services
    (c) Nimbus Sports International
    (d) Canadian Broadcasting Corporation
    (e) Big Productions

    Satellite Information Service Live



    12. Which well-known former Olympic gold medallist is Chairman of the London Organising Committee for the Olympic Games?
    (a) Daley Thompson
    (b) Sebastian Coe
    (c) Steve Overt
    (d) Robin Cousins
    (e) Eric Heiden

    Sebastian Coe



    13. Virender Sehwag was in news recently for missing his triple century in the India-Sri Lanka series by less than 10 runs. Who is the only batsman to have scored three triple centuries in Test Cricket?
    (a) Allan Border
    (b) Donald Bradman
    (c) Brian Lara
    (d) Both (2) & (3)
    (e) None of the above

    None of the above



    14. Virender Sehwag was in news recently for his score of 293 runs in the first inning of the third test match between India and Sri Lanka in Mumbai. Who has scored the highest number of double centuries in tests for India?
    (a) Virender Sehwag
    (b) Rahul Dravid
    (c) Sachin Tendulkar
    (d) Sunil Gavaskar
    (e) Both (1) and (3)

    Virender Sehwag



    15. Which former Test Cricketer of Australia is the Chief Executive Officer of the Federation of International Cricketers’ Association (FICA) that looks after the interest of cricketers of Test playing countries?
    (a) Allan Border
    (b) Tim May
    (c) Kim Hughes
    (d) Tom Moody
    (e) David Boon

    Tim May



    16. Which of the following statements about India’s performance in Test Cricket are correct in light of recent developments?
    I. The victory against Sri Lanka in third test of the 2009 series at Brabourne Stadium in Mumbai was India’s 100th test victory
    II. India is the only country to have not lost a single Test in 2009
    III. India’s score of 726 for nine declared in the first innings of the third test of India-Sri Lanka series at Brabourne Stadium, Mumbai is its highest total in Test cricket
    (a) I only
    (b) I and II only
    (c) II and III only
    (d) III and I only
    (e) I, II and III

    II and III only



    17. Who was appointed as the new captain of the 21-member Indian Hockey team for the FIH Men’s Champions Challenge tournament in Salta, Argentina from December 6 to 13?
    (a) Tushar Khandekar
    (b) Dilip Tirkey
    (c) Arjun Halappa
    (d) Rajpal Singh
    (e) Dhanraj Pillai

    Rajpal Singh



    18. World Professional Billiards Champion Pankaj Advani accepted the Eklavya award, the highest recognition for a sportsperson in which state recently?
    (a) Delhi
    (b) Karnataka
    (c) Tamil Nadu
    (d) Kerala
    (e) Andhra Pradesh

    Karnataka



    19. Suresh Kalmadi was elected unopposed as the President of the Asian ______ Association for a third term at Guangzhou, China recently.
    (a) Basketball
    (b) Hockey
    (c) Weightlifting
    (d) Athletics
    (e) Shooting

    Athletics



    20. Which of the following has acquired the theatrical telecast rights for cricket matches of the Indian Premier League (IPL) 2010 and 2019 for Rs 330 crore recently?
    (a) Entertainment and Sports Direct (ESD)
    (b) Satellite Information Services (SIS)
    (c) Triplecom Media
    (d) Fox Sports International (FSI)
    (e) Big Entertainment

    Entertainment and Sports Direct (ESD)

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