147/2015


Maximum: 100 marks Time: 1 hour and 15 minutes
1. A cycle consists of two isothermal and two isentropic proces.ses is known as

Otto cycle Joule cycle


Stirling cycle 'Carnot cycle


2. In an isometric projection the radius of a sphere it is equal to
W 0.82R R
1.22 R 2R
3. The function of steam nozzle is to convert:

heat energy steam into kinetic energy


heat energy steam into rotational energy


kinetic energy into heat energy of steam


heat energy steam into pressure energy


4. Dryness fraction is the ratio of

mass of dry steam to the mass of water vapour in suspension


mass of water vapour in suspension to the mass of water vapour and mass of dry steam


mass of dry steam 1;0 the mass of dry steam and mass of water vapour 1U suspension


mass of water vapour in suspension to the mass of dry steam


5. If the thermal efficiency of Carnot heat engine is 50 percent, then coefficient of performance of a refrigerator working within the same temperature limit would be
1 2
3 4

6. During throttling process:

internal energy does not change pressure does not change


volume does not change enthalpy does not change


7. Which one of the following parameter is significant to ascertain chemical equilibrium of a
system?
Clapeyron of equation Maxwell relation

Gibb's function Helmholtz function
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'centage of carbon in cast iron usually varies between:
8.
J e per 0.5 to 1.0%
( n1to 0.2
0
1.5 to 2.5% 2.5 to 3.5%
9. Martensite is a supersaturated solution of carbon in

Alpha iron Beta iron


Gamma iron Delta iron


10. Dislocation in materials is a

Point Line


Plane Volumetric


11. The head over a 900 V-notch increases from 0.15 to 0.3 m. The ratio of the new discharge to the original discharge is

1.414 2.25


4.00 5.657


12. A floating body will remain in stable equilibrium so long as

the metacentre M lies below the centre of gravity


the metacentre M lies above the centre of gravity


the metacentre and centre of gravity remain at the same position


None of these


13. The nominal thickness of boundary layer represents the distance from the surface to a point where:

the flow ceases to be laminar


velocity is 99 percent of its asymptotic limit


the shear stress becomes maximum


the flow behaves as if it were rotational


14. A pitot-tube is an instrument for measuring:

pressure of flow discharge of fluid


velocity of flow total energy


15. The specific speed Ns H314 for a double suction pump is to be evaluated. The discharge would be taken:

half the actual discharge actual discharge


double the actual discharge square of the actual discharge


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16. If two pumps identical in all respects and each capable of delivering a discharge Q against a head H are connected in series, the resulting discharge is

2Q against a head 2H 2Q against a head H


Q against a head 2H Q against a head H.


17. The power obtained from an impulse turbine is proportional to the number of nozzles used. A pelton turbine with six nozzles has a specific speed of 8.1. The specific speed per nozzle is
1.35 2
3.3 81
18. During idling of a petrol engine requires:

chemically correct mixture variable mixture


lean mixture rich mixture


19. In investment casting the pattern

is made of wax


is made of plastic


is always made of the material to be cast


is not used


20. In the Orsat apparatus KOH solution is used to absorb:

carbon monoxide carbon dioxide


oxygen none of the above


21. For the same compression ratio:

thermal efficiencY of otto cycle is greater than that of diesel cycle


thermal efficiency of otto cycle is less than that of diesel cycle


thermal efficiency of otto cycle is same as that for a diesel cycle


thermal efficiency of diesel cycle cannot be predicted


22. The knocking in 81 engine gets reduced:

by increasing the compression ratio


by retarding the spark advance


by increasing the inlet air temperature


by increasing the cooling water temperature


23. Where is the Hook's joint used in an automobile?

between gearbox and propeller shaft


between flywheel and clutch


between differential gear and wheel


between clutch and gear box


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24. Work input to the air compressor with n as index of compression:
wH..h in value of n

decrease with increase·in value of n


remains same whatever the value of n


first incteases and then decreases with value of n


25. 1 tonne of refrigeration is equivalent to:

336 kJ/min 210 kJ/min


1400 kJ/min 540 kJ/min


26. The thermal conductivity is expressed as

W/mK W/m2K


WlhmK Wlh2m2K


27. In SI engines which one of the following is the correct order of the fuels with increasing detonation tendency:

Paraffins, Olefins, Naphthenes, Aromatics


Aromatics, Naphthenes, Paraffins, Olefins


Naphthenes, Olefins, Aromatics, Paraffins


Aromatics, Napthenes, Olefins, Paraffins


28. The Nusselt number in natural convection is a function ofPrandtl number and:

Stanton number Biot number


Reynolds number Grashoff number


29. Which of the following properties of a refrigerant is undesirable?

high critical temperature low specific heat of liquid


low specific volume vapour high boiling point


30. The emissivity of a body is equal to absorptivity when the body remams m thermal equilibrium. This law refers to as

Planck's law Lambert's law


Kirchoffs law Wien's displacement law


31. In a vapour compression cycle the condition of refrigerant is saturated liquid:

before entering the compressor


before passing through the condenser


after passing through the condenser


after passing through the expansion valve


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32. Which of the following processes is generally used in winter air conditioning?

dehumidification humidification


cooling and dehumidification heating and humidification


33. Upto critical radius of insulation the heat flow:

decreases


Increases.


heat flux decreases


convection heat loss is less than conduction heat loss


34. As relative humidity decreases the dew point will be temperature.

higher than equal to


lower than none ofthe above


35. A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size running at 1500 rpm. The theoretical output of the two stroke engine will be

twice that of the four stroke engine


half that of the four stroke engine


the same as that of the four stroke engine


depend upon whether it is a C1 or S1 engine


36. The main reason for adopting the axial flow compressors instead of centrifugal compressors in aircraft turbine is that:

starting torque for axial flow compressor is high


the frontal area of axial flow compressor is considerably less


efficiency of middle speed range is higher


pressure ratio per stage is high


37. Morse test measures the indicated power of:

S1 engine C1 engine


Steam engines Steam turbine


38. Which one of the following is a lower pair?

cam and follower toothed gearing


shaft in a bearing ball and race in bearing


39. Coriolis component of acceleration is present exists whenever a point moves along a path that has:

tangential acceleration centripetal acceleration


linear motion rotational motion


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40. The speed of an engine is seen to fluctuate Continuously above and below mean speed. The governor is said to be

isochronous hunting


over sensitive unstable


41. Which motor will be suitable for traction?

DC series motor DC shunt constant speed


DC shunt adjustable speed compound motor


42. When two spur gears having involute profiles on their tooth engage the line of action is tangential to

pitch circle dedendum circle


addendum circle base circle


43. Crowning of pulleys is generally done:

to reduce the belt friction


to dissipate the heat generated due to friction


to perfect the belt joint so that it may not break while running


to prevent the belt from running of the pulley


44. A simply supported beam of span 10 m carrying a load of 500 N at the midspan will have a maximum bending moment of:

500 Nm 1250 Nm


2500 Nm 5000 Nm


45. The diameter of shaft is increased from 50 mm to 100 mm all other conditions remaining unchanged. How many times the torque carrying capacity increases?

2 times 4 times


8 times 16 times


46. If a compression coil spring of stiffness 10 N/m is cut into two equal parts and the used in parallel the equivalent spring stiffness will be

10 N/m 20 N/m


40 N/m 80 N/m


47. A differential gear in an automobile is:

simple gear train epicyclic gear train


compound gear train none of these


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48. The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes turn to left. The effect of gyroscopic couple on the aeroplane will be
to raise the nose and dip the tail to dip the nose and raise the tail

49. In a locomotive the ratio of the connecting rod length crank radius is kept lw:ge in order

minimise the effect of primary force minimise the effect of secondary force


have perfect balancing start the locomotive quickly


50. In order facilitate the starting of locomotive in any position, the crank of a locomotive with two cylinders are placed:

45· 90·


120· 180·


51. The ratio of maximum displacement of the forced vibration to the deflection due static force is known as

damping factor damping coefficient


logarithmic decrement magnification


52. A mild steel rod having 50 mm diameter and 500 mm length is to be turned on a lathe. Determine the machining lime to reduce the rod to 45 mm in one pass when cutting speed is 30 m/min and a feed of 0.7 mm/rev is used:

1.74 min 2.74 min


3.74 min 4.74 min


53. For producing more accurate holes, the sequence of operations to be followed is

centering, drilling, boring, reaming centering, boring, drilling, ·reaming


drilling, centering, boring, reaming drilling, reaming, boring, centering


54. The main purpose of chaplets used in foundary practice are:

to provide efficient venting ensure directional solidification


to support the core align the mould boxes


55. In oxy-acetylene gas welding the volume of oxygen required per unit volume of acetylene:

1 1.5


2 2.5


56. Tempering of hardened steel is done to increase its:

grain size surface condition


ductility carbon content


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57. The 3ngle which is found betwe"en the face of the cutting tool and the normal to the machined surface at the cutting edge is called:

rake angle relief angle


clearance angle cutting angle


58. The hardness with which the bond holds the cutting points or abrasives in place defined by the term:

structure grit size


gram Size grade


59. Which of the following is not a part of Capstan lathe?
chuck tailstock
tool post

60. The gears manufactured on generating principle in

hobbing milling


broaching shaping


61. Quick returning mechanism is used in

milling machine broaching machine


slotting machine lathe machine


62. During ultrasonic machining the metal removal is achieved by

high frequency eddy currents


high frequency sound waves


hammering action of abrasive particles


rubbing action between tool and work piece


63. According to Indian standard specifications the total number of designated grades of fundamental tolerances are:
18 21
24 28
64. In a metric thread designated by M12 x 1.5 specify that the thread has:

cross sectional area 12 mm2 and depth 1.5


nominal diameter 12 mm and pitch 1.5


nominal diameter 12 mm and number of threads per mm is 1.5


Pitch 1.5 and depth 12 mm


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65. In a steam engine the joint to be used for connecting the piston rod and cross-head is

knucle joint cotter joint


oldham's coupling bolted joint'


66. Creep in a belt drive is due to

improper crowning


plasticity of belt material


differential elongation of belt due to difference in tension on sides of the pulley


Change in the coefficient of friction due to over heating


67. Annual demand for a product costing Rs. 100 is 400. Ordering cost per order is Rs. 100 and carrying cost is Rs. 2 per unit per year. The economic lot size is then:
200 300
400 500
68. CPM and PERT techniques are used for:

layout planning financial management


executing a new project increasing productivity


69. ABC analysis in materials management is a method of classifying the inventories based on

the value of annual usage item economic order quantity


volume of material consumption quantity of material used


70. Break even point is the point where:

fixed and variable cost line will intersect


variable and total cost lines intersect


total cost and fixed cost lines intersect


total cost and sales revenue lines intersect


71. The core product model required for any CAD/CAM system:

Data model Solid model


Prototype Geometric model


72. Group technology is suitable for production of:

medium range variety and high range quality


high range variety and high range quantity


medium range variety and medium range quantity
low range variety and low range quality



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73. In FMS the tools are identified by means of:

colour code bar code


PLC digital code


74. Just in time manufacturing philosophy emphasizes on:

man power manufacturing


profit inventory


75. A joint sector undertaking:

is jointly owned by several share holders


is jointly owned by private parties and government


is jointly managed by two directors


is jointly owned by state and central governments


76. C-charts are the best example of:

Binomial distribution Poisson distribution


Normal distribution None of these


77. Cellular manufacturing system is designed on the basis of:

JIT MRP


GT Layout


78. In linear programming the shadow prices are:

the values assigned to one unit of capacity


maximum cost per item


cost of bought out items


cost of items manufactured in the plant


79. A feeler gauge is used to check:

pitch of gears shape of screw threads


bore of discs and pulleys thickness of a clearance


80. The relation between tool life and cutting speed is expressed as
TVn V nT
T nV VTn
81. Which amendment of the constitution lowering the voting age from 21 to 18?

73 62


64 61


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82. The power to create new st(lte or alter the boundaries of existing state vested upon

Supreme Court Prime Minister


Parliament State legislature


83. The constitution prescribe the age qualification for being appointed as Governor of the state:

25 years 35 years


45 years 40 years


84. Which article of the constitution provides the right to protection against arrest and sentention?

Article 21 Article 19


Article 20 Article 22


85. The chief legal advicer of the President of India:

Comptroller and Auditor General Chief Justice of Supreme Court


Attorney General Division bench of Supreme Court


86. Sarkaria commission related to

Minorities rights River water and Border disputes


Backward class commission Centre State relations


87. In 1975 the National Emergency Declaration signed by

V.V. Giri Neelam Sanjeev Reddy


Zakir Huzzain Fakhruddin Ali Ahmed


88. Modern states are called "Professional States" called by

Norman D Palmer Raja'ni Kothari


S.L. Sikri Frederic C. Mosher


89. Write the odd one:

A.B. Vajpayee Rajeev Gandhi


ManMohan Singh Jawaharlal Nehru


90. The youngest person who became the Chief Minister of the State

Omar Abdulla Akhilesh Yadav


Praphulla Mahanta Aravind Khejriwal


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91. Operation Protective Edge is associated with: Egypt Kuwait Israel Afghanistan
92. Bachpan Bachchavo Andolan is founded by Vinobabave Kailesh Satyarthi Baba Amte Aravind Khejriwal
93. Malayali poet known as 'Singing Sword of Keral(A) T.S. Tirumumpu Kumaranasan is: Changampuzha Vailoppalli

94. The ruler of Travancore who abolished 'Shucheenc
am Kaimukku'

Swati Tirunal Utram Tirunal


Sree Moolam Tirunal Sree Visakham Tirunal


95. 'Jeevitha Samaram' is the autobiography of:

EMS Namboothirippadu C. Kesavan


A.K Gopalan V.T. Bhattathirippad


96. Who was the internai Minister of Kerala in 1957?

EMS Namboothirippadu T.V. Thomas


V.R. Krishnaiyyer KR. Gouri


97. The real name ofVagvadananta was:

Kunhiraman Kunhikannan


Damodaran Bala Krishnan


98. The editor of the journal 'Mitavadi' was:

Ramakrishnappilla Vakkam Abdul Khader


C. Krishnan T.K Madhavan


99. Who founded 'Kochi Pulaya Mahasabha'?

KP. Karuppan Ayyankali


Sahodaran Ayyappan None of these


100. 'Aruvippuram Pratishta' was conducted in the year:

1878 1887


1898 1787


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