IES Mechanical Engineering 2011 Solved Question Paper II
01. Which one of the following is the major alloying element in Invar?
(A) Aluminium (B) Nickel (C) Vanadium (D) Copper
Ans: (b)
02. In the designation of Aluminium casting A514.0 indicates :
(A) Aluminium purity (B) Aluminium content
(C) Percentage of alloy element (D) Magnesium Content
Ans: (d)
03. Columbium is a :
(A) Nuclear material (B) Automobile material
(C) Film material (D) Foam material
Ans: (a)
04. Consider the following statements :
1. Any metal will require some time to undergo complete plastic deformation particularly if deforming metal has to fill cavities and corners of small radii.
2. For larger work piece of metals that can retain toughness at forging temperature it is preferable to use forge press rather than forge hammer.
(A) 1 and 2 are correct and 2 is the reason for 1
(B) 1 and 2 are correct and 1 is the reason for 2
(C) 1 and 2 are correct but unrelated
(D) 1 only correct
Ans: (b)
05. Which of the following processes belong to forging operation ?
1. Fullering
2. Swaging
3. Welding
(A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3 only
Ans: (a)
6. Match List –I with List –II and select the correct answer using the code given below the lists :
List –I List –II
A. Connecting rods 1. Welding
B. Pressure vessels 2. Extrusion
C. Machine tool beds 3. Forming
D. Collapsible tubes 4. Casting
Codes
A B C D A B C D
(a) 2 1 4 3 (b) 3 1 4 2
(c) 2 4 1 3 (d) 3 4 1 2
Ans: (b)
07. Consider the following statements :
1. Hot chamber machine is used for casting zinc, tin and other low melting alloys.
2. Cold chamber machine is used for die casting of ferrous alloys
3. Rapid cooling rate in die casting produces high strength and quality in many alloys.
Which of these statements are correct?
(A) 1, 2 and 3 (B) 1 and 2 only (C) 2 and 3 only (D) 1 and 3 only
Ans: (a)
08. Consider the following advantages of die casting over sand casting :
1. Rapidity of the process
2. Smooth surface
3. Strong dense metal structure
Which of these advantages are correct ?
(A) 1, 2 and 3 (B) 1 and 2 only (C) 2 and 3 only (D) 1 and 3 only
Ans: (b)
09. The proper sequence of investment casting steps is :
(A) Slurry coating – pattern melt out-Shakeout – Stucco coating
(B) Stucco coating – Slurry coating – Shakeout – Pattern melt out
(C) Slurry coating – Stucco coating – Pattern melt out – Shakeout
(D) Stucco coating – Shakeout – Slurry coating – Pattern melt out
Ans: (c)
10. The method of casting for producing ornamental pieces are:
(A) Slush and gravity casting
(B) Pressed and slush casting
(C) Gravity and semi permanent mould casting
(D) Semi permanent mould and pressed casting
Ans: (c)
11. In light metal casting, runner should be so designed that:
1. It avoids aspiration
2. It avoids turbulence
3. The path of runner is reduced in area so that unequal volume of flow through each gate takes place
(A) 1 and 2 only (B) 1 and 3 only (C) 2 and 3 only (D) 1, 2 and
Ans: (a)
12. During plasma are welding of aluminium, improved removal of the surface oxide from the base metal is obtained with typical polarity of :
(A) DC Straight (B) DC reverse
(C) AC potential (D) Reverse polarity of phase of AC potential
Ans: (b)
13. The welding process in which bare wire is used as electrode, granular flux is used and the process is characterized by its high speed welding, is known as:
(A) Shielded arc welding (B) Plasma arc welding
(C) Submerged arc welding (D) Gas metal arc welding
Ans: (c)
14. Consider the following statements. Cast iron is difficult to weld, because of
1. Low ductility 2. Poor fusion 3. Tendency to crack on cooling
Which of these statements are correct ?
(A) 1, 2 and 3 (B) 1 and 2 only (C) 2 and 3 only (D) 1 and 3 only
Ans: (a)
15. Match List –I with List –II and select the correct answer using the code given below the
lists: List-I List –II
A. Laser beam welding 1. Can be applied for welding or refractory
metals like niobium, tantalum, molybdenum and tungsten.
B. Electron beam welding 2. A sound and clean welded joint is created due
to rubbing of two parts against each other with adequate speed and pressure producing intense heat raising temperature above melting point.
C. Ultrasonic welding 3. Clean heat source created much away from
job, a narrow spot is heated, work chamber operates in a high vacuum.
D. Friction welding 4. Clean heat source very quick heating, very
small focal spot, no vacuum chamber is required.
Codes : A B C D
(a) 4 3 1 2
(b) 2 3 1 4
(c) 4 1 3 4
(d) 2 1 3 4
Ans: (a)
16. Cold-cracking in steel weldments depends on
1. Carbon equivalent
2. Heat input
3. Effective thickness
3. Hydrogen content in weld pool
(A) 1, 2 and 3 only (B) 1, 2 and 4 only (C) 2, 3 and 4 only (D) 1, 2, 3 and 4
Ans: (b)
19. Trajectory of a robot mean :
(A) Path traced by the end effectors (B) Kinematics of Robot
(C) Robot joints (D) Robot programming
Ans: (a)
20. Typical coolants used for machining aluminium are :
1. Kerosene oil 2. Soda water
3. Air 4. Paraffin oil
(A) 1, 2, 3 and 4 (B) 2 and 3 only
(C) 1 and 2 only (D) 3 and 4 only
Ans: (c)
21. In flowcharting, the connector symbol is a
(A) Parallelogram (B) Square (C) Diamond (D) Circle
Ans: (d)
22. Which of the following statement(s) is/are correct?
1. Bus is a group of wires carrying information.
2. Bus can carry data
3. Bus cannot carry address
4. A bus can be shared by more than one device
(A) 1, 2, 3 and 4 (B) 1, 2 and 4 only (C) 1, 2 and 4 only (D) 2, 3 and 4
only
Ans: (c)
23. Refreshing circuit is required in
(A) ROM (B) Static RAM (C) Dynamic RAM (D) All of the
above
Ans: (c)
24. The number of RAM chips of size (256 kx1) required to build a 2 Mbyte memory is
(A)16 (B) 32 (C) 64 (D) 128
Ans: (c)
25. Which of the following are the advantages of MOS devices over bipolar devices?
1. Easy to fabricate
2. Allows higher bit densities
3. Cost effective
4. Operational speed.
(A) 1, 2, 3 and 4 (B) 1, 2 and 3 only (C) 2, 3 and 4 only (D) 1, 3 and 4 only
Ans: (b)
26. In the queuing theory, if the arrivals in a single server model follow Poisson distribution,
the time between arrivals will follow a:
(A) Gamma distribution (B) Exponential distribution
(C) Binomial distribution (D) Weibull distribution
Ans: (b)
27. For a single server queue, the mean arrival rate is equal to 8/hr and the mean service rate
is 12/hr. The expected number in waiting line is equal to
A) 0.5 (B) 1.33 (C) 2 (D) 3
Ans: (b)
28. When the ordering cost is increased to 4 times, the EOQ will be increased to :
(A) 2 times (B) 3 times (C) 8 times (D) Remain same
Ans: (a)
29. An unbound solution of a linear programming problems is reflected in the simplex method, when:
(A) All the ratio of ‘right hand sides’ to coefficients in key column become negative
(B) All the ratios of right hand sides to coefficients in key columns become zero
(C) All right hand sides become negative
(D) All right hand sides become zero
Ans: (a)
30. Match List-I with List-II and select the correct answer using the code given below the
lists:
List – I List – II
A. R 1. Ranges
B. p 2. Number of defects/unit
C. c 3. Number of defects
D. u 4. Fraction defectives
Codes:-
A B C D A B C D
(a) 1 4 3 2 (b) 2 4 3 1
(c) 1 3 4 2 (d) 2 3 4 1
Ans: (a)
31. Which of the following method is NOT used for obtaining the initial basic feasible
solution in transportation problems?
(A) North west corner method (B) Least cost entry method
(C) Vogel’s approximation method (D) MODI method
Ans: (d)
32. Consider the following terms used to study the functions of the material :
1. Use value
2. Esteem value
3. Exchange value
4. Scrap value
Which of these are used to identify in the value engineering approach ?
(A) 1, 2, 3 and 4 (B) 1, 3 and 4 only
(C) 1, 2 and 3 only (D) 2, 3 and 4 only
Ans: (c)
33. A basic feasible solution of an m × n transportation problem is said to be non degenerate
if the allocations are in independent positions and starting basic feasible solution contains
exactly following number of individual allocations:
(A) m + n (B) m × n (C) m + n −1 (D) m + n +1
Ans: (c)
34. The component reliability is usually measured by : reliability (CR), failure rates (FR) and
mean time between failures (MIBF). The MTBF is :
(A) Number of failure/unit-hours of operation
(B) Unit-hours of operation/number of failures
(C) Number of failures/number of tested
(D) Number of failures x unit-hours of operation
Ans: (b)
35. Which one of the following statement is NOT correct with reference to the purposes and
effects of rake angle of a cutting tool?
(A) To guide the chip flow direction
(B) To reduce the friction between the tool flanks and the machined surface
(C) To add keenness or sharpness to the cutting edges.
(D) To provide better thermal efficiency.
Ans: (b)
36. The under capacity of a manufacturing company is preferred when:
(A) The rate of obsolescence of the plant and equipment is high
(B) The time required to add capacity is long
(C) The fixed cost of the capacity is not very high
(D) Shortage of the products affects the company.
Ans: (c)
37. The break-even point can be lowered by :
(A) Increasing the fixed costs (B) Increasing the variable costs
(C) Decreasing the slope of the income line (D) Reducing the variable cost
Ans: (d)
38. Consider the following characteristics:
1. It is very sensitive to small movements in the data.
2. The technique is simple
3. The method is affected by the personal prejudice of the people.
Which of these characteristics of moving average method of forecasting are correct?
(A) 1, 2 and 3 (B) 1 and 2 only (C) 2 and 3 only (D) 1 and 3 only
Ans: (a)
39. In a transportation problem, how is an unacceptable transportation route handled?
(A) By giving it a cost of zero (B) By carrying an extremely high cost
(C) By introducing a dummy destination (D) By introducing origin
Ans: (b)
40. The instrument or device used to measure the cutting forces in machining is :
(A) Tachometer (B) Comparator (C) Dynamometer (D) Lactometer
Ans: (c)
41. When a journal rotates in anticlockwise direction at high speed in a bearing having
adequate supply of lubricant, it will be :
(A) Pushed to the left of the bearing centre and is likely to have no metal contact with the bearing.
(B) Resting just below the bearing centre without making metal to metal contact.
(C) Pushed to the right of the bearing centre and make no metal to metal contact.
(D) Running concentric with the bearing centre and make no metal to metal contact.
Ans: (c)
42. Interference fit joints are provided for:
(A) Assembling bush bearing in housing (B) Mounting heavy duty gears on shafts
(C) Mounting pulley on shafts (D) Assembly of flywheels on shafts
Ans: (a)
43. In a bolt of uniform strength :
(A) Nominal diameter of thread is equal to the diameter of shank of the bolt
(B) Nominal diameter of thread is larger than the diameter of shank of the bolt
(C) Nominal diameter of thread is less than the diameter of shank of the bolt
(D) Core diameter of threads is equal to the diameter of shank of the bolt.
Ans: (d)
44. An axle is a machine part that is subjected to :
(A) Transverse loads and bending moment (B) Twisting moment only
(C) Twisting moment an axial load (D) Bending moment and axial load
Ans: (b)
45. Consider the following statements pertaining to V belts in power transmission:
1. Standard V belts are available in 7 sizes of cross section A to G
2. Standard V belts are available in 5 sizes of cross section A to E
3. Standard V belts are available in 5 sizes of cross section A to E with A having largest cross section.
4. The included angle for the belt groove in usually around 35
Which of these statements are correct?
(A) 1 only (B) 2 and 4 (C) 3 and 4 (D) 1 and 4
Ans: (b)
IES Mechanical Engineering 2011 Solved Question Paper II
IES Mechanical Engineering Solved Question Paper I
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