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Thermax Aptitude Paper 2015
Posted on :29-02-2016
Thermax Placement Paper:-
Section 1 - Technical:-
Q1. Hysterisis loss is least affected by -
A. TemperatureB. FrequencyC. WeightD. Density
Q2. The ladder will not be in equilibrium if
A. floor surface is smooth and wall surface is roughB. floor surface is rough and wall surface is roughC. floor surface is smooth and wall surface is smoothD. floor surface is rough and wall surface is smooth
Q3. Effect of cavitation in Turbines -
A. Noise and VibrationB. EfficiencyC. Decrease in life of bladesD. All the above
Q4. Washer is used:
A. to avoid wearB. to absorb vibrationC. to protect bearing surface
Q5. Elasticity of a fluid is measured by
A. Modulus of ElasticityB. Rigidity ModulusC. Bulk ModulusD. None of the above
Q6. Compression ratio of the C.I. Engine
A. 8 to 10B. 10 to 15C. 16 to 20D. None
Q7. Jigs are used for
A. turningB. millingC. drillingD. grinding
Q8. First law of Thermodynamics deals with
A. Conservation of MassB. Conservation of MomentumC. Conservation of EnergyD. Conservation of Heat
Q9. Which structure can be viewed by Naked Eye?
A. Micro StructureB. GrainC. MacroD. Atomic
Q10. Thermal Conductivity of Water ------- with increase in temperature.
A. Increases with temperatureB. Decreases then increasesC. Increases then DecreasesD. Does not change
Q11. In which type of welding, chemical reaction takes place?
A. ResistanceB. ThermitC. ForgeD. Gas
Q12. Expansion valves are used in pipes carrying ----
A. WaterB. SteamC. Viscous fluidD. Air at high pressure
Q13. Fusible plug is used -----
A. To control steam temperature.B. To put off the fire when the water level in the boiler falls below the alarming limitC. To avoid Explosion
Q14. A fly wheel starts from rest and accelerates uniformly and reaches 25 rpm in 3 seconds. What will be the angular velocity(in rpm) after 10 seconds?
A. 20B. 25C. 45D. 50
Q15. Idling mixture in Petrol Engines are ----
A. RichB. LeanC. Variable
Q16. When the Ice cubes present in the glass of water get melted, what will happen to the level of water ----
A. IncreasesB. DecreasesC. Does not change
Q17. In coal refineries magnets are used to separate ----.
A. dustB. iron particlesC. SandD. All the above
Q18. Resistance to fatigue strength is measured by
A. Tensile TestB. Shear TestC. Endurance Limit
Q19. Thermal Conductivity of Solids ----- with increase of temperature.
A. IncreasesB. DecreaseC. Increases then DecreaseD. Unpredictable
Q20. Statistical processing is done to
A. improve the qualityB. maintain the qualityC. both 1 and 2D. to increase the profit
Q21. Radio active materials emit -------
A. alphaB. betaC. GammaD. All the above
Q22. ON/OFF Control application Valve -
A. Ball valveB. Globe valveC. Needle valveD. Butter fly valve
Q23. Radiator is made up of -----
A. BrassB. SteelC. PlasticD. Cast Iron
Q24. Heat treatment of steel changes
A. PhysicalB. ChemicalC. Mechanical properties
Q25. Compiler is used
A. To convert High level programmes to the Language understandable by machinesB. To convert the programmes from Digital to Analog.C. To compile the instructions in registers.D. Both B & C
Q26. Manometer is effective for
A. High pressureB. Very High pressureC. Low pressureD. None of the above
Q27. Which of the following has the maximum Head?
A. 33 inches HgB. 756 mm of HgC. 31.6 m of waterD. 1.013 kg/sq.cm
Q28. The oil of sp. gravity 0.9 and water are kept in two identical vessels, then the Hydro static Pressure at bottom of oil will be
A. More than pressure of the water at the bottomB. Less than pressure of the water at the topC. SameD. Insufficient data
Q29. High moisture content in the last stage of turbine will cause
A. CorrosionB. Low thermal efficiencyC. Low Blade lifeD. All the above
Q30. Chip breakers are used ---
A. To permit small chipsB. to increase tool lifeC. For Safety
Q31. What will happen to the specific volume of the water when it is heated from 0 degree Celcius?
A. IncreasesB. DecreasesC. Remain Constant
Q32. Where the bending stress is maximum for I Section Beam?
A. Neutral axisB. At the joint of wedge and flankC. where the shear stress is maximumD. Outer most of the fibres
Q33. Heat is a substance of
A. internal energyB. thermal conductanceC. enthalpyD. entropy
Q34. Grove is given in which welding?
A. filletB. buttC. lapD. both fillet and lap
Q35. Pressure vessels are made by---
A. weldingB. rivetC. bothD. none of the above
Q36. A carbon bar is of length 10m. Its temperature increased from 30C to 330C. What is the expansion degree?
A. 300B. 30C. 10D. 100
Q37. For close transmission, which of the following fit is used?
A. transitionB. interferenceC. clearanceD. none of the above
Q38. Calorie is a unit of
A. Specific heatB. Quantity of heat
Q39. Heat is supplied at 30,000 J/s and output of 90kw. What is the thermal efficiency of the heat engine?
A. 30%B. 33%C. 40%D. 50%E. 50%
Q40. Corrosion resistance of steel increases by
A. Cr,W,Va,MoB. CrC. Cr,Ni
Q41. Cp / Cv of Gas ---- at varying temperatures.
A. ConstantB. IncreasesC. Decreases
Q42. The state of the refrigerant in the vapour compression cycle before throttling ----.
A. WetB. Dry
Q43. Feuler gauges are used to measure the ----.
A. clearanceB. densityC. dust particle content
Q44. Reason for slipping when we walk on the Ice
A. Ice surface is smoothB. When we apply pressure on the Ice it gets melted
Q45. Purpose of conducting Tensile Test
A. DuctilityB. ResistivityC. CapacityD. Impedence
Section 2 - Data Sufficiency:-
Find the answer using given two options:
Q46. What is the average speed of A & B?
a) A travels 4 miles / hour more than Bb) A travels 60 meters
Q47. How many Brothers does Mohan have?
a) Mohans sisters are twice as Brothersb) Mohans uncle has one Nephew
Q48. One man got Birthday gift.
a) He got twice the amount of gift on that Birthdayb) Number of gifts received is 4 fewer than he received on third birthday
Q49. How many times is the calorific value of Bread greater than the apple?
a) Bread is 1/2 times more than Bananab) Banana is 3 times more than Apple
Q50. If x=y^2 then x^2-y=?
a) x + y = 2b) x = 4
Q51. If K-1 is a square and K<17, what is K?
a) K is evenb) K is odd
Q52. In an election P, Q, R are the contestants. They got the votes as follows. Can you find out who got the majority votes?
a) P= (4/3)* Pb) Q= (2/3)*R
Q53. Amar, Akbar, John & King have joined one Team each. Who joined football?
a) Not more than three joined one game.b) Amar & Akbar joined Base Ball, King joined Basket ball .
Q54. Find an average speed of the two men.
a) Speed of one man = 100 kmphb) Distance traveled by another man = 25 km.
Q55. What is the area of the unoccupied by the triangle if the triangle is completely inside the square?
a) A triangle compactibility inside the squareb) Area relation
Q56. What is the % of X in Y?
a) X=Y/4b) X + Y = 200
Q57. What is the price per unit rise during 1976 from 1975?
a) More units were sold in 1976 than 1975b) There was 5% decrease in 1976 than 1975
Q58. There are 12 marbles, Red, Blue & Green. Find the number of Red marbles.
a) Number of red marbles is greater than the Blue and Greenb) Number of Blue marbles are twice as that of the Green marbles