Hello sir, I am Rajat. I am from Delhi. I want you to help me by providing me with the Steel Authority of India Limited (SAIL) Management Trainee (MT) previous year paper for mechanical engineering students. Can you help me?

As you have asked for the Steel Authority of India Limited (SAIL) Management Trainee (MT) previous year paper for mechanical engineering students, I am giving you information about it
A definite area or space where some thermodynamic process takes place is known as
A thermodynamic system
B thermodynamic cycle
C thermodynamic process
D thermodynamic law


2. Which of the following is an intensive property of a thermodynamic system?
A volume
B Temperature
C mass
D energy

3. Temperature at which the volume of the gas becomes 0 is called
A absolute scale of temperature
B absolute 0 temperature
C absolute temperature
D none of these

4. The unit of energy in SI units is

A joule
B joule metre
C watt
D joule/metre

5. 1 joule is equal to

A 1 Nm
B kNm
C 10 Nm/s
D 10 kNm/s

6. In an irreversible process there is a

A loss of heat
B no loss of heat
C gain of heat
D no gain of heat

7. The following is an SI engine

A diesel engine
B petrol engine
C gas engine
D none of the above

8. In a 4 stroke cycle petrol engine during suction stroke

A only air is sucked in
B only petrol is sucked in
C mixture of petrol and air is sucked in
D none of the above

9. The thermal efficiency of petrol engine as compared to diesel engine is

A lower
B higher
C same for same power output
D same for same speed

10. Compression ratio of diesel engines may have a range

A 8 to 10
B 10 to 15
C 16 to 20
D none of the above

11 The thermal efficiency of good I.C engine at the rated load is in the range of

A 80 to 90%
B 60 to 70%
C 30 to 35%
D 10 to 20%

12 Carburettor is used for

A SI engines
B gas engines
C CI engines
D none of the above

13 In SI engine to develop high voltage for spark plug
A battery is installed
B distributor is installed
C carburetor is installed
D ignition coil is installed

14 In a four cylinder petrol engine the standard firing order is

A 1-2-3-4
B 1-4-3-2
C 1-3-2-4
D 1-3-4-2

15 The knocking is SI engines increases with
A increase in inlet air temperature
B increase in compression ratio
C increase in cooling water temperature
D all of the above

16 Petrol commercially available in India for Indian passenger cars has octane number in the range

A 40 to 50
B 60 to 70
C 80 to 85
D 95 to 100

17 The knocking tendency in C.I engines increases with

A decrease of compression ratio
B increase of compression ratio
C increasing the temperature of inlet air
D increasing cooling water temperature


18 The air standard otto cycle comprises

A two constant pressure processes and two constant volume processes
B two constant pressure and two constant entropy processes
C two constant volume processes and two constant entropy processes
D none of the above

19 The thermal efficiency of theoretical otto cycle
A increases with increase in compression ratio
B increases with increase in isentropic index gamma
C does not depend upon the pressure ratio
D follows of the above

20 Thermal efficiency of a gas turbine plant has compared to diesel engine plant is
A higher
B lower
C same
D may be higher or lower

21 Mechanical efficiency of a gas turbine as compared to internal combustion Reciprocating engine is

A higher
B lower
C same
D unpredictable

22 For a gas turbine the pressure ratio may be in the range

A 2 to 3 B 3 to 5


C 16 to 18 D 18 to 22



23 Thermal efficiency of a closed cycle gas turbine plant increases by

A reheating B intercooling

C regenerator D all of the above



24With the increase in pressure ratio thermal efficiency of a simple gas turbine

Plant with fixed turbine inlet temperature

A decreases B increases

C first increases and then decreases D first decreases and then increases




25In two stage turbine plant, reheating after first stage

A increases work ratio B decreases work ratio

C does not affect work ratio D none of the above



26For a jet propulsion unit , ideally the compressor work and turbine work are

A equal B unequal

C not related to each other D unpredictable

27 Various kinematic pairs are given below.choose the lower pair

A ball bearings B tooth gears in mesh


C camm and follower D crank shaft and bearing







28The relation between the number of pairs forming a kinematic chain and the

Number of links is

A l=2p-2 B l=2p-3

C l=2P-4 D l=2p-5



29In a reciprocating engine

A crankshaft and flywheel form 2 kinematic links


B crankshaft and flywheel form 1 kinematics links

C crankshaft and flywheel do not form kinematic links

D flywheel and crankshaft separately form kinematic links



30A kinematic chain is known as a mechanism when

A none of the link is fixed

B one of the links is fixed

C two of the links are fixed

D all of the links are fixed


31 Which of the following is an inversion of single slider crank chain?

A beam engine

B watt’s indicator mechanism

C elliptical trammels

D whitworth quick return motion mechanism





32 control volumes refer to

A a fixed region in space


B a specified mass

C an isolated system

D a closed system



33An isentropic process is always

A irreversible and adiabatic

B reversible and isothermal

C friction less and irreversible

D reversible and adiabatic




34Work done in a free expansion process is

A 0

B minimum

C maximum

D positive



35.The figure shows a pin-jointed plane truss loaded at the point M by hanging a mass of 100 kg. The


member LN of the truss is subjected to a load of?



(a) 0 Newton

(b)490 Newtons in compression

(c)981 Newtons in compression

(d) 981 Newtons in tension

36.In terms of.Poisson’s ratio (v) the ratio of Young’s Modulus (E) to Shear Modulus (G) of elastic materials is ?

(a)2(1 + v)


(b) 2(1 — v)

(c)(1 + v)/2

(d)(1 — v)/2

37. Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at

1200 rpm and transmits a torque of 2O N. m. The torque transmitted by the gear is

(a) 6.6 Nm

(b) 20 Nm


(c) 40 Nm

(d) 60 Nm





40.A vibrating machine is isolated from the floor using springs. If the ratio of excitation frequency of vibration of machine to the natural frequency of the isolation system is equal to 0.5, the transmissibility of ratio of isolation is

(a)1/2

(b)3/4

(c)4/3


(d)2





43. The S-N curve for steel becomes asymptotic nearly at

(a)10 3 cycles

(b) 10 4 cycles

(c)10 6 cycles

(d) 10 9 cycles


44. In the window air conditioner, the expansion device used is

(a)capillary tube

(b) thermostatic expansion valve

(c)automatic expansion valve

(d) float valve

45. During chemical de-humidification process of air

(a) dry bulb temperature and specific humidity decrease

(b) dry bulb temperature increases and specific humidity decreases

(c) dry bulb temperature decreases and specific humidity increases


(d) dry bulb temperature and specific humidity increase

46.An incompressible fluid (kinematic viscosity, 7.4 x 10-7 m2 /s, specific gravity, 0.88) is held between two parallel plates. If the top.plate is moved with a velocity of 0.5 rn/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is ?

(a)0.651 x 10 -3

(b) 0.651

(c)6.51

(d) 0.651 x 103

47.Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is ?


(a)CH ClF2

(b) C2 Cl 3F3

(c)C2 Cl 2F4

(d) C2 H2F4


49. A gas contained in a cylinder is compressed, the work required for compression being 5000 kJ. During the process, heat interaction of 2000 kJ causes the surroundings to the heated. The change in internal energy of the gas during the process is

(a)—7000kJ

(b) —3000kJ

(c)+ 3000 kJ


(d) + 7000 kJ

50.The compression ratio of a gas power plant cycle corresponding to maximum work output for the given temperature limits of Tmin and Tmax will be


(a)10 microns

(b) 20 microns

(c)30 microns

(d) 60 microns




52. The mechanism of material removal in EDM process is


(a) Melting and Evaporation

(b) Melting and Corrosion

(c) Erosion and Cavitation

(d) Cavitation and Evaporation

53. Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming, effective resistance to be 200 micro-ohms and current flow time of 0.2 second, heat generated during the process will be

(a)0.2 Joule

(b) 1 Joule

(c)5 Joule

(d) 1000 Joules


54. In PERT analysis a critical activity has

(a)maximum Float

(b) zero Float

(c)maximum Cost

(d) minimum Cost

55. For a product, the forecast and the actual sales for December 2002 were 25 and 20 respectively. If the exponential smoothing constant (a) is taken as 0.2, the forecast sales for January 2003 would be ?

(a)21

(b)23

(c)24


(d) 27

56. Misrun is a casting defect which occurs due to

(a) very high pouring temperature of the metal

(b) insufficient fluidity of the molten metal

(c) absorption of gases by the liquid metal

(d) improper alignment of the mould flasks

57. The percentage of carbon in gray cast iron is in the range of

(a)0.25 to 0.75 percent

(b) 1.25 to 1.75 percent


(c)3 to 4 percent

(d) 8 to 10 percent

58.In the figure shown,


the relative velocity of link1 with respect to link 2 is 12 m/sec. Link 2 rotates at a constant speed of 120 rpm. The magnitude of Coriolis component of aceeleration of link 1 is

(a)302 m/s2

(b)604 m/s2

(c)906 m/s2

(d) 1208 m/s2


59. The figure below shows a planar mechanism with single degree of freedom.


The instant center 24 for the given configuration is located at a position ?

(a) L

(b) M

(c) N

(d)Infinity

60.A uniform stiff rod of length 200 mm and having a weight of 300 N is pivoted at one end and connected to a spring at the other end.

For keeping the rod vertical in a stable position the minimum value of spring constant K needed is ?


(a) 300 N/m

(b) 400 N/m

(c) 500 N/m

(d) 1000 N/m

61. In a bolted joint two members are connected with an axial tightening force of 2200 N.


If the bolt used has metric threads of 4 mm pitch, the torque required for achieving the tightening force is?

(a)0.7Nm

(b)1.0 Nm


(c)1.4 Nm