FOREMAN(SERVICE WORKSHOP)-SIDCO SOLVED PAPER 2015

FOREMAN(SERVICE WORKSHOP)-SIDCO

EXAM DATE:23-12-2015
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1.An adjustable blade propeller turbine is called as:

A.Banki turbine

B.Pelton turbine

C.Kapian turbine*

D.Francis turbine

Ans:C

2.Newton’s law of viscosity depends upon the:

A.Shear stress and rate of strain*

B.Shear stress,pressure and velocity

C.Stress and strain in a fluid

D.Viscosity and shear stress

Ans:A

3.An oil of specific gravity 0.95 has kinematic viscosity of 0.28 Stokes at 38⁰C.What will be its viscosity in Ns/m²?

A.0.0252

B.0.0311

C.0.2520

D.0.0266*

Ans:D

4.From the point of lower specific energy consumption,which of the following compressor are suitable for part load operation?

A.Centrifugal compressors

B.Single stage screw  compressor

C.Two stage reciprocating  compressor*

D.Two stage screw compressor

Ans:C

5.Which of the following processes does not involve a transfer of material?

A.Convection

B.Vaporization

C.Radiation*

D.Evaporation

Ans:C

6.For a given heat flow and for the same thickness,the temperature drop access the material will be maximum  for:

A.Steel

B.Copper

C.Refractory brick*

D.Glass –wool

Ans:C

7.Heat is conducted  through a 10 cm thick wall at the rate of 30 W/m² when the temperature difference across the wall is 10⁰C.What is the thermal conductivity of the wall?

A.0.03 W/mk

B.0.3 W/mk*

C.3.0 W /mk

D.30.0 W/mk

Ans:B

8.The ratio of energy transferred by convection to that by conduction is called:

A.Biot number

B.Nusselt number*

C.Stanton number

D.Peclet number

Ans:B

9.When all the conditions are identical in the case of flow through pipes with heat transfer, the velocity profiles will be identical for:

A.Liquid heating and liquid cooling*

B.Gas heating and gas cooling

C.Liquid heating and gas cooling
D.Heating and cooling  of any fluid

Ans:A

10.The silver coating on the glass surface of a Thermos bottle reduces energy that is it transferred:

A.Conduction

B.Convection

C.Radiation*

D.Friction

Ans:C

11.The steady state conditions in diffusion are governed by:

A.Fick’s second law

B.Fick’s first law*

C.Both (A)and (B)

D.Maxwell-Boltzmann’s law

Ans:B

12.Toughness of steel increased by adding:

A.Nickel*

B.Chromium

C.Sulphur

D.Tungsten

Ans:A

13.Material used for machine tool bed is :

A.High carbon steel

B.mild steel

C.alloy steel

D.East iron*

Ans:D

14.The eutectoid mixture of steel is:

A.A mixture of ferrite and cementite*

B.A mixture of ferrite and austenite

C.A mixture of austenite and cementite

D.Called pearlite

Ans:A

15.Hot rolling of mild steel is carried out:

A.At recrystallisation temperature

B.between 100⁰C to 150⁰ C

C.Below recrystallisation temperature

D.Above recrystallisation temperature*

Ans:D

16.Piston rings for engines are made of:

A.Cast iron*

B.Copper

C.Aluminium

D.Mild steel

Ans:A

17.Aluminium is not good for die casting because:

A.It is light and strong

B.It tends to react chemically with the die surface*

C.it takes longer time to cool

D.Its melting point is high and it expands on solidification

Ans:B

18.Which of the following processes is used to harden the steel?

A.Normalizing

B.Annealing

C.Carburizing

D.Quenching*

Ans:D

19.Which of the following is always true for an isothermal process of an ideal gas?

A.The pressure does not change

B.The internal energy does not change*

C.The volume does not change

D.No heat flows into or out of the system

Ans:B

20.A heat engine takes in 200 Joule of thermal energy and performs 50 Joule of work in each cycle.What is its efficiency?

A.12%

B.20%

C.25%*

D.80%

Ans:C

21.If a chemical reaction has a positive change in entropy,then:

A.The disorder of the system increases*

B.The reaction is exothermic

C.Heat goes from  the system into the surroundings

D.The Gibbs free energy is negative

Ans:A

22.Joule-Thomson coefficient is the slope of:

A.Constant enthalpy lines on T-s diagram

B.Constant enthalpy lines on T-p diagram

C.Inversion curve on T-s diagram

D.Inversion curve on T-p diagram*

Ans:D

23.Pressure reaches a value of absolute  zero:

A.At a temperature of -273K

B.Under vaccum condition

C.At the earth’s centre

D.When molecular momentum of system becomes zero*

Ans:D

24.The mathematical technique for finding the best use of limited resources in an optimum manner is known as:

A.Operation research

B.Linear programming*

C.Network analysis

D.Queuing theory

Ans:B

25.The first method invented for planning project was”

A.Bar Chart*

B.Milestone chart

C.Critical Path Method(CPM)

D.Programme Evaluation Review Technique(PERT)

Ans:A

26.Input output analysis is processed through:

A.Time and motion study

B.Value analysis

C.Transaction matrix  *

D.Product analysis

Ans:C

27.Positive slack on a PERT indicates that project is:

A.Behind the schedule

B.Ahead of schedule*

C.As per schedule

D.On critical path

Ans:B

28.Queuing theory is associated with:
A.Inspection time

B.Inventory

C.Production time

D.Waiting time*

Ans:D

29.The pin knuckle joint is subjected to:

A.Tosional shear stress

B.Double shear stress*

C.Axial compressive stress

D.Axial tensile stress

Ans:B

30.Thermal stresses are caused by due to:

A.Variation in temperature*

B.Specific heat

C.High temperature

D.Latent heat

Ans:A

31.When the diameter of the shaft is doubled,its torque transmitting capacity will be increased by:

A.16 times

B.2 times

C.4 times

D.8 times*

Ans:D

32.If the Poisson’s ratio is 0.25,then the ratio of shear modulus to the elastic modulus is:

A.0.25

B.0.4*

C.1.25

D.0.5

Ans:B

33.The poison’s ratio of carbon steel is:

A.0.41

B.0.21

C.0.29*

D.0.75

Ans:C

34.The process of addition of moisture to air at constant dry bulb temperature is:

A.Air conditioning

B.Humidification*

C.Sensible heating

D.Dehydration

Ans:B

35.Boiling temperature of Freon -22 is:

A.-33.33⁰C

B.-78.5⁰C

C.-29.8⁰C

D.-40.7⁰C*

Ans:D

36.In a psychometric process,the sensible heat added is 40 kJ.sec and latent heat added is 30 kJ/sec.The sensible heat factor for the process will be:

A.0.3

B.0.67

C.0.6

D.0.57*

Ans:D

37.The highest temperature in vapour compression cycle occurs at:

A.Receiver

B.Expansion valve

C.Compressor discharge*

D.Condenser discharge

Ans:C

38.Greenhouse effect refers to increase in:

A.Global temperature*

B.Carbon monoxide

C.Atmospheric pressure

D.Greenery

Ans:A

39.At the critical point of steam:

A.Boiling point  is 0⁰C

B.Enthalpy of evaporation is zero*

C.Sensible heat is zero

D.Total enthalpy is zero

Ans:B

40.Concentration of solids  in boiler drum is controlled by:

A.Reducing dosage of chemicals

B.Blowdown*

C.Steam venting

D.Deaeration

Ans:B

41.What type of steam is generally used for power generation?

A.High pressure steam with super heat*

B.Dry saturated low pressure steam

C.Dry saturated  with very high pressure

D.Wet steam  with very high pressure

Ans:A

42.Profile of the gear tooth can be checked by:

A.Optical pyrometer

B.Sine bar

C.Bench micrometer

D.Optical projector*

Ans:D

43.Aut-collimator is used for measurement of:

A.Small angular differences*

B.Flatness

C.Concavity

D.Roughness of the surface

Ans:A

44.Which of the following is the most important  characterisitic of a measuring instrument?

A.Precision

B.Repeatability*

C.Sensitivity

D.Accuracy

Ans:B

45.For a strain gauge, high gauge factor results in:

A.Zero drift

B.Linear response

C.High sensitivity*

D.Low hysteresis

Ans:C

46.The most preferred process for casting gas turbine blades is:

A.Die moulding

B.Shell moulding

C.Investment moulding*

D.Sand casting

Ans:C

47.By which one of the following methods gray cast iron is usually welded?

A.TIG welding

B.MIG welding

C.Gas welding*

D.Arc welding

Ans:C

48.Submerged are welding takes place:

A.Under water

B.In a cloud of gas

C.Between work surfaces

D.Under a blanket of granular flux*

Ans:D

49.Silicon is added to electrode coating as:

A.A slipping agent

B.A slag former

C.A de-oxidant*

D.A colouring agent

Ans:C

50.The preheating of parts to be welded and slow cooling of the welded structure will reduce:

A.Cracking and incomplete fusion

B.Cracking and residual stress

C.Residual stress and incomplete penetration*

D.Cracking and underfill

Ans:C

51.Automotive crankshafts are made by:

A.Casting process

B.Welding process

C.Machining from rolled stock

D.Drop forging process*

Ans:D

52.An imaginary circle which by pure rolling action,gives the same motion as the actual gear and is called:

A.Addendum circle

B.Pitch circle*

C.Dedendum circle

D.Base circle

Ans:B

53.An engine produces  10 kW brake power by working with a brake thermal efficiency of 30%.IF the calorific value of fuel used is 40.000 kJ/kg,then what is mass fuel consumption?

A.0.5 kg/hr

B.3 kg/hr*

C.0.3 kg/hr

D.1 Kg/hr

Ans:B

54.Reference fuels for knock rating of SI engine fuels would include:

A.Iso-octane and a –methyl naphthalene

B.Normal octane and aniline

C.Iso-octane and n-hexane

D.N-heptane and iso-octane*

Ans:D

55.Morse test is used to find out:

A.Indicated horse power for multicylinder engines*

B.Shaft horse power

C.Mean effective pressure

D.Temperature of exhaust gas

Ans:A

56.By sypercharging the petrol engine,the chance of detonation:

A.Decreases

B.Increases*

C.Remains constant

D.None of the above

Ans:B

57.If the initial tension in the belt is increased,the power transmission capacity:

A.Is increased*

B.Is decreased

C.Remains same

D.Is independent to initial tension

Ans:A

58.Which of the following screw thread is stronger than other threads?

A.Square threads

B.Buttress threads*

C.Trapezoidal threads

D.V Threads

Ans:B

59.The thickness of thin cylinder is determined on the basis of:

A.Radial stress

B.Longitudinal stress

C.Circumferential stress*

D.Principal shear stress

Ans:C

60.While designing a flange coupling care is taken so that:

A.Shaft is the weakest component

B.Bolt is the weakest component

C. Flange is the weakest component

D.Key is the weakest component*

Ans:D

61.Process of removing moisture content of timber is called:

A.Drying

B.Seasoning*

C.Treating

D.Drilling

Ans:B

62.Size of the lathe is specified by:

A.Height of the centre above the lathe bed

B.Swing diameter over the bed

C.Swing diameter over the carriage

D.All the above*

Ans:D

63.The operation to prevent leakage through the riveted joint:

A.Welding

B.Caulking and fullering*

C.Hammering

D.Bending

Ans:B

64.---------------is hinged to the tool head of a shaper.

A.Saddle

B.Cross rail

C.Column

D.Clapper box*

Ans:D

65.Maximum bending moment due to moving load on a simple supported beam occur:

A.Under the load*

B.At mid span

C.At support

D.Any where on the beam

Ans:A

66.Value of gamma for air

A.4.1

B.1.4*

C.1.44

D.4.11

Ans:B

67.Manometer is used to measure:

A.Velocity

B.Discharge

C.Pressure*

D.Temperature

Ans:C

68.The size of cam depends upon the size of its:

A.Base circle*

B.Prime circle

C.Trace point

D.Pitch point

Ans:A

69.Co-efficient of discharge Cd=

A.Cc x Cv*

B.Cv/Cc

C.Cv+Cc

D.Cv-Cc

Ans:A

70.The most efficient cycle is:

A.Diesel

B.Carnot*

C.Joules

D.Petrol
Ans:B

71.50 Mega Pascal:

A.50 N/mm²  *

B.50 N/m²

C.500 N/mm²

D.50 N/cm²

Ans:A

72.Specific gravity of Mercury is:

A.16.3

B.12.9

C.1.36

D.13.6*

Ans:D

73.The process of generating a gear:

A.Peripheral milling

B.Roaming

C.Hobbing*

D.Angular milling

Ans:C

74.The operation of cutting of flat sheet to desired shape:

A.Pasrting

B.Blanking*

C.Slitting

D.Lancing

Ans:B

75.In which Turbine the rummer vanes are adjustable:

A.Francis

B.Pelton wheel

C.Caplan*

D.Deriaz turbine

Ans:C

76.The operation of maching several surfaces of a work piece simultaneously be feeding the table against a numbers of cutters having same or different diameters mounted on the arbour of the machine:

A.Mount milling

B.Gang milling*

C.Group milling

D.Form milling

Ans:B

77.Ability of material to deform under tensile load is called:

A.Malleability

B.Ductility*

C.Brittleness

D.Toughness

Ans:B

78.A device which holds and locates a work piece for a manufacturing operation:

A.Fixture*

B.Jug

C.V-block

D.G-Clamp

Ans:A

79.Venturimeter is used to measure the ------------of the liquid flowing in a pipe.

A.Velocity

B.Pressure

C.Colour

D.Discharge*

Ans:D

80.------------is the turning effect of force.

A.Rotory motion

B.Acceleration

C.Torque*

D.Velocity

Ans:C

81.The first Travelogue in  Malayalam language was written by:

A.Paremakkil Toma Kattanar*

B.Arnos Patiri

C.Fr.Clement

D.Anjelo Francis

Ans:A

82.The first Signatory to the Malayali Memorial was:

A.K.P.Sankara Menon*

B.G.P.Pillai

C.Dr.Palpu

D.Kandathil Varghese Mappila

Ans:A

83.Karmavipakam is the autobiography of:

A.Mannathu Padmanabhan

B.M.R.B

C.V.T.Bhattathiripad*

D.Premji

Ans:C

84.Arya Pallam is related with which of the following :

A.Salt Satyagraha

B.Guruvayur Satyagraha

C.Vaikom Satyagraha

D.Paliyam Satyagraha*

Ans:D

85.Which of the following is characterized as the most essential of all fundamental rights?

A.The Right to Equaltiy

B.The Right to Freedom*

C.The Right against Exploitation

D.The Right to Constitutional remedies

Ans:B

86.Who among the following belonged to the Serampore Missionaries?

A.Rev.Mead

B.Ringeltaube

C.C.M.Agur

D.William Carey*

Ans:D

87.LARR is a Central Act related to:

A.Labour

B.Land acquisition*

C.Women uplift

D.Space Research

Ans:B

88.Sujanandini Was started by:

 A.C.V.Kunhiraman

B.Paravur Kesavan Asan*

C.Swadesabhimani Ramakrishnapillai

D.C.Krishnan

Ans:B

89.Mokshapradeepam is a work of:

A.Swami Vagbhadananda

B.Vaikunda Swamikal

C.Brahmananda Sivayogi*

D.Chattampi Swamikal

Ans:C

90.The first Malayalam Newspaper banned by the Travancore Government?

A.Sandishtavadi*

B.Swadesabhimani

C.Jnanikshepam

D.Malayali

Ans:A

91.The first President of Nair Service Society was:

A.Mannathu Padmanabhan

B.G.P.PILLAI

C.K.Kelappan*

D.K.P.Kesavamenon

Ans:C

92.Mahatma Gandhi met Sreenanarayana  Guru at Varkala on:

A.1925 March 12*

B.1925 April 12

C.1928 January 13

D.1928 February 13

Ans:A

93.Govt.Brennen College was started by which of the following missionaries?

A.Basel Mission*

B.C.M.S.Missionaries

C.L.M.S.Missionaries

D.Serampore Missionaries

Ans:A

94.Chaturyantam is a work written by:

A.Fr.Anjelo Francis

B.Fr.Clement

C.Fr.Kiriyatti Ousep

D.Amos Patiri*

Ans:D

95.The Tatwaprakasika Asram was started by

A.Sahodaran Ayyappan

B.Poikayil Kumara Guru

C.Vagbhadanda*

D.Chattampi Swamikal

Ans:C

96.NITI is:

A.National Industrial Training Institute

B.National Institution for Transforming India*

C.National Information Technology Institute

D.National Information Training Institute

Ans:B

97.Malabar Economic Union was founded by:

A.C.Kesavan

B.C.Krishnan

C.Dr.P.Palpu*

D.C.V.Kunhiraman

Ans:C

98.Badhiravilapam is a poem written by:

A.Ulloor  S.Parameswara Iyer

B.Kumaran Asan

C.Vallathol Narayana Menon*

D.P.K.Narayana Pillai

Ans:C

99.The martyr of the Paliyam Satyagraha?

A.A.K.Gopalan

B.Kunhapi

C.Govinda Panikkar

D.A.G.Velayudhan*

Ans:D

100.The dance form Ramanattam was invented by:

A.Kottayam Thampuran

B.Kottarakara Thampuran*

C.Raja of Vettathunad

D.Zamorin of Calicut

Ans:B