| 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
|
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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
|
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 4 |
|
| Options |
|
| Your Answer |
(Right
Answer) |
|
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Right
Answer) |
|
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Right
Answer) |
|
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| 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 |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
A |
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Topic: GATE – Sample Questions - MECH2
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