| No. |
Question |
| 1 |
The following data about the flow of liquid was
observed in a continuous chemical process plant
| Flow rate (litres/sec) |
7.5 to
7.7 |
7.7 to
7.9 |
7.9 to
8.1 |
8.1 to
8.3 |
8.3 to
8.5 |
8.5 to
8.7 |
| Frequency |
1 |
5 |
35 |
17 |
12 |
10 |
Mean flow rate of the liquid is |
| Options |
| A) 8.00 litres/sec |
B) 8.06 litres/sec
|
| C) 8.16 litres/sec |
D) 8.26 litres/sec
|
|
| Correct Answer |
C |
| 2 |
During the execution of a CNC part program block
NO20 GO2 X45.0 Y25.0 R5.0
the type of tool motion will be
|
| Options |
A) circular Interpolation — clockwise
|
B) circular Interpolation — counterclockwise
|
C) linear Interpolation
|
D) rapid feed |
|
| Correct Answer |
A |
| |
| 3 |
A component can be produced by any of the four
processes I, II, III and IV. Process I has a fixed cost ofRs. 20 and
variable cost of Rs. 3 per piece. Process II has a fixed cost Rs. 50 and
variable cost of Re. 1 per piece. Process III has a fixed cost of Rs. 40
and variable cost of Rs. 2 per piece. Process IV has a fixed cost of Rs.
10 and variable cost of Rs. 4 per piece. If the company wishes to
produce 100 pieces of the
component, from economic point of view it should choose |
| Options |
| A) Process I |
B) Process II |
| C) Process III |
D) Process IV
|
|
| Correct Answer |
B |
| 5 |
In an interchangeable assembly, shafts of size
25.000+0.040mm mate with holes of size 25.000+0.020
mm. The maximum possible clearance in the assembly will be
|
| Options |
| A) 10 microns |
B) 20 microns |
| C) 30 microns |
D) 60 microns |
|
| Correct Answer |
D |
| |
| 6 |
A company has two factories S1, S2
and two warehouses D1, D2. The supplies from
S1 and S2 are 50 and 40 units respectively.
Warehouse D1 requires a minimum of 20 units and a maximum of
40 units. Warehouse D2 requires a minimum of 20 units and,
over and above, it can take as much as can be supplied. A balanced
transportation problem is to be formulated for the above situation. The
number of supply points, the number of demand points, and the total
supply (or total demand) in the balanced transportation problem
respectively are |
| Options |
| A) 2, 4, 90 |
B) 2, 4, 110 |
| C) 3, 4, 90 |
D) 3, 4, 110 |
|
| Correct Answer |
C |
| 7 |
A standard machine tool and an automatic machine
tool are being compared for the production of a component. Following
data refers to the two machines.
| |
Standard Machine Tool |
Automatic Machine Tool |
| Setup time |
30 min. |
2 hours |
| Machining time per piece |
22 min. |
5min |
| Machine rate |
Rs. 200 per hour |
Rs. 800 per hour |
The breakeven production batch size above which the automatic machine
tool will be economical to use, will be
|
| Options |
|
| 8 |
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 m/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 |
| Options |
| A) 0.651 x 10-3 |
B) 0.651 |
| C) 6.51 |
D) 0.651 x 103 |
|
| Correct Answer |
B |
| 9 |
A weighing machine consists of a 2 kg pan resting
on spring. In this condition, with the pan resting on the spring, the
length of the spring is 200 mm. When a mass of 20 kg is placed on the
pan, the length of the spring becomes 100 mm. For the spring, the
un-deformed length 10 and the spring constant k (stiffness) are |
| Options |
| A) l0 = 220 mm, k = 1862 N/m |
B) l0 = 210 mm, k = 1960 N/m |
| C) l0 = 200 mm, k = 1960 N/m |
D) l0 = 200 mm, k = 2156 N/m |
|
| Correct Answer |
B |
| 10 |
Match the following with respect to spatial
mechanisms.
Type of Joint Degrees of
constraint
P-Revolute. 1. Three
Q-Cylindrical 2. Five
R-Spherical 3. Four
4. Two
5. Zero |
| Options |
A) P-l Q-3 R-3
|
B) P-5 Q-4 R-3
|
| C) P-2 Q-3 R-l |
D) P-4 Q-5 R-3 |
|
| Correct Answer |
C |
| 11 |
Environment friendly refrigerant R134a
is used in the new generation domestic refrigerators. Its chemical
formula is |
| Options |
| A) CH C1 F2 |
B) C2 C13 F3
|
| C) C2 C12 F4 |
D) C2 H2 F4 |
|
| Correct Answer |
D |
| 12 |
A company has an annual demand of 1000 units,
ordering cost of Us. 100/order and carrying cost of Rs. 100/unit-year.
If the stock-out costs are estimated to be nearly Rs. 400 each time the
company runs out-of-stock, the safety stock justified by the carrying
cost will be |
| Options |
|
| 13 |
Which among the NC operations given below are
continuous path operations?
Arc Welding (AW)
Milling (M)
Drilling (D)
Punching is Sheet Metal (P)
Laser Cutting of Sheet Metal (LC)
Spot Welding (SW) |
| Options |
| A) AW, LC and M |
B) AW, D, LC and M
|
| C) D, LC, P and SW |
D) D, LC, and SW |
|
| Correct Answer |
B |
| 14 |
The S-N curve for steel becomes asymptotic nearly
at
|
| Options |
| A) 103 cycles |
B) 104 cycles
|
| C) 106 cycles |
D) 109 cycles |
|
| Correct Answer |
C |
| 15 |
There are four samples P, Q, R and S, with
natural frequencies 64, 96, 128 and
256 Hz, respectively. They are mounted on test setups for conducting
vibration experiments. If a loud pure note of frequency 144 Hz is
produced by some instrument, which of the samples will show the most
perceptible induced vibration? |
| Options |
|
| Correct Answer |
A |
| 16 |
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 |
| Options |
|
| Correct Answer |
C |
| 17 |
When 3-2-1 principle is used to support and
locate a three dimensional work-piece during machining, the number of
degress of freedom that are restricted is |
| Options |
|
| Correct Answer |
C |
| 18 |
A solar collector receiving solar radiation at
the rate of 0.6 k W/m2 transforms it to the internal energy
of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is
used to run a heat engine which rejects heat at 313 K. If the heat
engine is to deliver 2.5 kW power, the minimum area of the solar
collector required would be |
| Options |
| A) 8.33m2 |
B) 16.66m2 |
| C) 39.68m2 |
D) 79.36m2 |
|
| Correct Answer |
D |
| 19 |
A fluid flow is represented by the velocity
field
= ax
+ ay
where a is a constant. The equation of stream line passing through a
point (1, 2) is
|
| Options |
| A) x-2y = 0 |
B) 2x + y = 0
|
| C) 2x - y = 0 |
D) x + 2y = 0 |
|
| Correct Answer |
C |
| 20 |
A welding operation is time-studied during which
an operator was pace-rated as 120%. The operator took, on an average, 8
minutes for producing the weld-joint. If a total of 10% allowances are
allowed for this operation, the expected standard production rate of the
weld-joint (in units per 8 hour day) is |
| Options |
|
| Correct Answer |
A |
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