NCL | ASSISTANT FORMAN | MECHANICAL ENGINEERNIG PAPER | 27.12.20
A) 1.6X10-19
Joule B) 1.6X10-9 Joule
C) 1.6X10-19
Coulomb D) 1.6X10-9 Coulomb
11. What is correct for hydrostatic state
of stress?
A) σx=σy≠ σz B) σx=σy=σz
C) σx≠ σy=σz D) All of the above
12. Pelton wheel is which type of turbine ?
A) Impulse
turbine B) Active turbine
C) Kaplan
type D) None of the above
13. What is the viscosity of ideal fluid ?
A) 1 B) Zero
C) 100 D) Infinite
14. What is the approximate density of
water ?
A) 1000 kg/ m3 B
)100 kg/ m3
C) 10 kg/ m3 D) 1 kg/ m3
15. What is the unit of viscosity?
A) Kg-sec/m2 B) N-Sec/ m2
C) Dyne-sec/
m D) None of the above
16. In U tube manometer, what is the specific
gravity of liquid whose pressure is to be measured in respect of liquid in the
manometer?
A) Specific
gravity of liquid in the manometer is higher in comparison to specific gravity
of liquid whose pressure is to be measured
B) Specific
gravity of liquid in the manometer is lower in comparison to specific gravity
of liquid whose pressure is to be measured
C) There
should be no difference of specific gravity
D) None of
the above
17. Which is not part of Hydraulic torque
convertor?
A) Turbine
runner B) Pump Impeller
C) Guide
vane
D) Gear and pinion
18. What is true about adiabatic process?
A) Temperature
remains constant
B) Volume
remains constant
C) No heat
transfer through system
D) Internal
Energy remains constant
19. Speed of sound is highest in which
medium?
A) Solid B) Liquid
C) Gas
D) Same in all medium
20. What is not correct about ultrasonic
waves ?
A) Frequency
is very high about 20,000 Hz
B) Human ear
can hear them
C) Wavelength
of these waves is very low
D) None of
the above
21. Which of these waves is a
Electromagnetic waves?
A) Sound
wave B) Ultrasonic wave
C) Alpha
wave D) None of the above
22. Hygrometer is used for measurement of
which of these?
A) Relative
Humidity B)Latent heat
C) Air pressure D) All of the above
23. Which of these is used as Controller
rod in Nuclear reactor?
A) Cadmium B) Uranium
C) Plutonium D) All of the above
24. What is the condition for neutral
equilibrium of a floating body?
A) Meta
Centre is above centre of gravity of body
B) Meta
Centre is below centre of gravity of body
C) Meta
Centre is at the centre of gravity of body
D) All of
the above
25. What is the unit of rate of flow of
discharge?
A) m2/ sec B) m3/ sec
C) Litres X sec D) All of the above
26. A hydraulic press has a ram of 30 cm
diameter and a plunger of 4.5 cm diameter. What is the weight lifted by the
hydraulic press when force applied at the plunger is 500 N?
A) 66 Kilo
Newton
B) 33 Kilo
Newton
C) 44 Kilo
Newton
D) 22 Kilo
Newton
27. An oil of specific gravity 0.9 is
contained in a vessel. At a point the height of oil is 40 meter. Find the
corresponding height of water at the point :
A) 72 meter B) 36 meter
C) 25 meter D) 24 meter
28. As per first law of thermodynamics,
energy of an isolated system is :
A) Zero B) 1
C) Constant D)
Infinite
29. Two litres of an ideal gas at a
pressure of 10 atm expands isothermally into a vacuum until its total volume is
10 litres. How much heat is absorbed in the expansion?
A) 10 Joule B) 80 Joule
C) Zero
D) -80 Joule
30. Which of these is not correct statement?
A) Entropy
change at Equilibrium is zero
B) Entropy
for a spontaneous process increases till it reaches maximum
C) Gaseous
state is state of highest entropy
D) Decrease
of regularity in structure would mean decrease in entropy
31. Which of these is not state function?
A) Entropy B) Internal Energy
C) Enthalpy D) Work
32. Which of these is not intensive
property?
A)
Temperature B) Heat Capacity
C) Density D) Pressure
33. In a process, 701 J of heat is absorbed
by a system and 394 J of work is done by the system. What is the change in
internal energy for the process?
A ) 307 J B) Zero
C) 1095 J D) -1095 J
34. Which of these is not correct equation?
A) G= H+TS B) Cp– Cv= R
C) H = U +
pV D) None of the above
35. When two elements of a pair are in line
contact, then pair is known as:
A) Lower
pair B) Higher pair
C) Medium
Pair D) Linear pair
36. A Pair is known as kinematic pair if
the relative motion between links of pair is :
A) Completely
or successfully constrained
B) Not
constrained
C) Not
related with each other
D) None of
the above
37. In
Shaper machine, which of the mechanism is used?
A)Slider
Crank Mechanism
B) Rotary
Mechanism
C) Oscillating
Mechanism
D) Quick
Return mechanism
38. Heat engine converts heat to which form
of energy?
A) Potential
Energy
B) Electrical
Energy
C) Mechanical
Energy
D) None of
the above
39. What is Module of a gear?
A) Pitch
diameter/ number of teeth
B) Number of
teeth/ Pitch diameter
C) It is
same as pitch of diameter
D) All of
the above
40. What is the clearance of gears?
A) Difference
between dedendum of one gear and dedendum of mating gear
B) Difference
between dedendum of one gear and addendum of mating gear
C) Both A
& B
D) None of
the above
41. Which of these is not a law of
thermodynamics?
A) Zeroth
law of thermodynamics
B) First law
of thermodynamics
C) Second
law of thermodynamics
D) None of
the above
42. Hacksaw blade cuts on the :
A) Forward
stroke
B) Return
stroke
C) Both
forward and return stroke
D) All of the
above
43. The flux commonly used on brazing is :
A) Zinc
chloride
B) Ammonium
chloride
C) Resin
Plus alcohol
D) Borax
44. A ‘two high rolling mill’ consists of
two rolls which rotate:
A) At the
same speed and in same direction
B) At the
same speed but in opposite direction
C) At
different speeds and in same direction
D) At
different speeds and in opposite direction
45. A flywheel is used :
A) To limit
the fluctuations of speed during each cycle
B) To
control the mean speed of the engine
C) To
maintain a constant speed
D) To come
into act in when speed varies
46. The type of spring used to absorb
shocks and vibrations in vehicles is :
A) Helical
extension spring
B) Multi
leaf spring
C) Spiral
spring
D) Coned
disk spring
47. Hot working :
A) Increases
toughness and ductility
B) Increases
surface finish
C) Increases
hardness and strength
D) None of
the above
48. Heat transfer in liquid and gases takes
place by:
A) Conduction B) Convection
C) Radiation D) Conduction and convection
49. Cetane number of diesel fuel is a
measure of :
A) Volatility B) Viscosity
C) Ignition quality D) Delay period
50. Compared with solid section, hollow
section column has :
A) High
buckling strength
B) Low
buckling strength
C) Same
buckling strength
D) None of
the above
51. In 6 X 19 designation of wire rope, the
numbers of 6 and 19 represent :
A) Number of strands and diameter of wire rope
B) Diameter and length of wire rope
C) Number of strands and number of wires in each
strand
D) Number of
wires in each strand and number of strand
52. Radius
of earth is 6.4X106 , What is the
minimum speed of a satellite to place in earth’s orbit?
A) 3.9X 103
m/s B) 7.9X 106 m/s
C) 13.9X 102
m/s D) 7.9X 103 m/s
53. An object is placed between two
inclined mirrors. How many images will be formed if angle between mirrors is 30
degree?
A) 10 B) 11
C) 12 D) 20
54. An open tank contains water up to a
depth of 2m and above it an oil of specific gravity 0.9 for a depth of 1 m. What
is the pressure at the bottom of tank?
A) 28449
N/m2 B) 18449 N/m2
C) 8829 N/m2 D) 19620 N/m2
55. What is the position of centre of
buoyancy for a wooden block of width 2.5 m and depth of 1.5 m, when it floats
horizontally in water? The density of wooden block is 650 kg/m3and its length 6
m ?
A)0.659 m
from base B) 0.975m from base
C) 0.487m
from base D) 1.462m from base
56.A stone weighs 392.4 N in air and 196.2
N in water. What is the volume of stone?
A) 2X106 cm3 B)
4X103 m3
C) 2X104 cm3 D)
5X106 m3
57. The velocity potential function is 5
(x2-y2), what is the velocity component u at point (4,5)
A) 40 units B)
-50 units
C) -40 units D) 50 units
58. What is not basic characteristic of
supercritical boilers?
A) Higher
plant efficiency
B) Heavy
drum is required for separating water and steam
C) Short
start up time
D) None of
the above
59. In which of the following, milling
machine table can be tilted in a vertical plane by providing swivel arrangement
at knee?
A) Omniversal
milling machine
B) Hand
milling machine
C) Universal
milling machine
D) Vertical
milling machine
60. Which of the following elements is not
used as a roller in roller bearings?
A)
Cylindrical B) Taper
C) Spherical D) None of the above
61. The rated Capacity of a power plant is
400 MW. The peak load on the plant is 350 MW. If the average load of plant is
280 MW, what is load factor?
A) 0.8 B) 0.7
C)1.2 D) 1.3
62. What is the critical temperature of
water?
A) 273
degree B) 650 degree
C) 374
degree D) 100 degree
63. The steam consumption in a turbine
running at 400 rpm is 5 kg/s. The power developed is 4.4 KW. If the mean
diameter is 96 cm, what is the peripheral velocity of blades?
A) 200 m/s B) 150 m/s
C) 20 m/ s D) 60 m/s
64. Which of these statements is correct
for inelastic collision?
A) The
kinetic energy of a body during impact remains constant
B) The
kinetic energy of a body before impact is equal to the kinetic energy of a body
after impact
C) The
kinetic energy of body before impact is less than the kinetic energy of a body
after impact
D) The
kinetic energy of body before impact is more than the kinetic energy of a body
after impact
65. A bearing is designated by the number
410. It means that it is a bearing of:
A) Light series with bore diameter of 10 mm
B) Heavy
series with bore diameter of 10 mm
C) Light series with bore diameter of 50 mm
D) Heavy
series with bore diameter of 50 mm
66. The
moment of inertia of a triangular section of base ‘a’ and height ‘L’ about an
axis passing through its
CG and parallel to the base is?
A) aL3/36 B) aL3/6
C) aL3/8 D) aL3/12
67. Addition of copper to aluminium results
in :
A) Increased Corrosion resistance
B)
Precipitation hardening
C) Grain refinement
D) High machineability
68. Which gases are used in Tungsten inert
gas welding?
A) CO2
and H2 B) Argon and Neon
C) Argon and
Helium D) Helium and Neon
69. A bag contains 7 white, 6 red and 9
black balls. Two balls are drawn at random, the probability that the ball will
be black is :
A) 1 / 11 B)
12 / 77
C) 5 / 77 D)
9 / 77
70. It is required to cut screw threads of
2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed
is 60 rpm, then the speed of lead screw will be:
A) 20 rpm B) 120 rpm
C) 10 rpm D) 180 rpm
Section B (1-30)
1. At what speed does a man walk who passes
through a street 600 m long in 5 minutes?
A) 3.6 km/h B) 7.2 km/h
C) 8 km/h D) 6 km/h
2. A car can finish a certain journey in 10
hrs at a speed of 48 km/hr. In order to cover the same distance in 8 hrs, the
speed of the car must be increased by:
A) 6 km/ h B) 7.5 km/h
C) 12 km/h D) 15 km/ h
3. A and B can do a piece of work in 36
days. B and C can do it in 60 days. A and C can do it in 45 days. In what time
can A alone do it?
A) 75 days B) 60 days
C) 50 days D) 40 days
4. Twelve men can complete a work in 8
days. Three days after the work, 3 more men joined. In how many days will all
of them together complete the remaining work?
A) 2 B)
4 C) 5 D)
6
5. If a bank pays 20% dividend, what rate
per cent would a person get by purchasing a share of Rs 100 for Rs 150?
A) 10% B) 13⅓%
C) 15% D) 20%
6. Fresh fruits contain 72% water and dry
fruit contains 20% water. How much dry fruit can be obtained from 100kg of
fresh fruit?
A) 32 kg B) 33 kg
C) 30 kg D)
35 kg
7. A man travelled a distance of 80 km in 7
hrs partly on foot at the rate of 8 km/ h and partly on bicycle at 16 km/ h.
find the distance travelled on foot?
A) 28 km B) 30 km
C) 32 km D) 33 km
8. If an article is sold at 200% profit,
then the ratio of its cost price to its selling price will be
A) 1:2 B) 2:1
C) 1:3 D)
3:1
9. If 95 is divided into four parts
proportional to 7, 5, 3, 4, the largest part is :
A) 35 B) 45
C) 36 D) 30
10. In an election there were only two candidates.
One of the candidates secured 40% of votes and
is defeated by the other candidate by 298 votes. The total number of
votes polled is :
A) 745 B)
1460 C) 1490 D) 1500
11. The average of two numbers A and B is
20, that of B and C is 19 and C and A is 21. What is the value of A?
A) 24 B) 22
C) 20 D) 18
12. Which of the following fraction is the
smallest?
A) 27/512 B) 81/1535
C) 9/170 D) 3/70
13. Sita starts from a point, walks 5km
towards north, turns towards her right, again turns to her right and walks.
What is the direction now she is facing?
A)
South-East B) East
C) South D) North
14. A boy goes to see a film and finds a
man who is his relative. The man is the husband of the sister of his mother.
How is the man related to the boy?
A) Uncle B) Nephew
C) Brother D) None of these
15. Find the missing number 1, 1, 2, 3, 5,
8, 21, ?
A) 30 B) 37
C) 34 D) 39
16. Eritrea, which became the 182nd member
of the United Nations in 1993, is located in which continent?
A) Asia B) Africa
C) Europe D)
Australia
17. Garampani sanctuary is located at
A) Junagarh,
Gujarat B) Diphu, Assam
C) Kohima,
Nagaland D) Gangtok, Sikkim
18. Which of the following national parks
is not listed in UNESCO World Heritage site?
A) Kaziranga B) Keoladeo
C)
Sundarbans D) Kanha
19. Geet Govind is a famous creation of ……
A) Bana Bhatt B) Kalidas
C) Jayadev D) Bharat Muni
20. The Lucknow session of Indian National
Congress that took place in 1916 was
presided by ?
A) Rashbihari
Ghosh
B) Ambika
Charan Majumdar
C) Bhupendra
Nath Bose
D) None of
the above
21. Golf player Vijay Singh belongs to
which country?
A) USA B) Fiji
C) India D) UK
22. In which state is the Elephant Water
Fall located?
A) Mizoram B) Odisha
C) Manipur D) Meghalaya
23. Which of the following instruments is
used to measure Soil Water Tension?
A)
Photometer B) Pyrometer
C)
Psychrometer D) Tensiometer
24. Jurisdiction of the Guwahati High Court
includes?
A) Nagaland B) Arunachal Pradesh
C) Assam D) All of the above
25. Where is ‘Dudhsagar Waterfall’ situated
in India:
A) At the
border of the Indian state of Goa and Karnataka
B) in
Karnataka
C) in
Gujarat
D) in
Rajasthan
26. According to Buddhist traditions, who
was Charioteer of Buddha?
A) Channa B) Kanthaka
C) Devdatta D) Chunda Hide
27. Eugenics is the study of :
A) altering
human beings by changing their genetic components
B) people of
European origin
C) different
races of mankind
D) genetic
of plants
28. DRDL stands for :
A) Defence Research and Development
Laboratary
B) Department
of Research and Development Laboratory
C) Differential
Research and Documentation Laboratary
D) None of
the above
29. Who is the first non-Indian to receive
the Bharat Ratna?
A) Martin
Luther King
B) Mother
Teresa
C) Khan
Abdul Ghaffar Khan
D) Aubin
Mehta
30. Which Indian state has its maximum area
under the forest cover?
A) Maharashtra
B) Madhya
Pradesh
C) Arunachal
Pradesh
|
Assistant Foreman (Mechanical)
(Trainee) Grade C |
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Set A |
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Section
A |
Section B |
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|
Question No. |
Correct Answer |
Question No. |
Correct Answer |
Question No. |
Correct Answer |
|
1 |
C |
36 |
A |
1 |
B |
|
2 |
A |
37 |
D |
2 |
C |
|
3 |
A |
38 |
C |
3 |
B |
|
4 |
B |
39 |
A |
4 |
B |
|
5 |
A |
40 |
B |
5 |
B |
|
6 |
B |
41 |
D |
6 |
D |
|
7 |
C |
42 |
A |
7 |
C |
|
8 |
A |
43 |
D |
8 |
C |
|
9 |
C |
44 |
B |
9 |
A |
|
10 |
B |
45 |
A |
10 |
C |
|
11 |
C |
46 |
B |
11 |
B |
|
12 |
A |
47 |
A |
12 |
D |
|
13 |
B |
48 |
D |
13 |
C |
|
14 |
A |
49 |
C/D |
14 |
BONUS |
|
15 |
B |
50 |
BONUS |
15 |
BONUS |
|
16 |
A |
51 |
C |
16 |
B |
|
17 |
D |
52 |
BONUS |
17 |
B |
|
18 |
C |
53 |
B |
18 |
D |
|
19 |
A |
54 |
A |
19 |
C |
|
20 |
B |
55 |
C |
20 |
B |
|
21 |
D |
56 |
C |
21 |
B |
|
22 |
A |
57 |
C |
22 |
D |
|
23 |
A |
58 |
B |
23 |
D |
|
24 |
C |
59 |
A |
24 |
D |
|
25 |
B |
60 |
D |
25 |
A |
|
26 |
D |
61 |
A |
26 |
A |
|
27 |
B |
62 |
C |
27 |
A |
|
28 |
C |
63 |
C |
28 |
A |
|
29 |
C |
64 |
D |
29 |
C |
|
30 |
D |
65 |
D |
30 |
B |
|
31 |
D |
66 |
A |
|
|
|
32 |
B |
67 |
B |
|
|
|
33 |
A |
68 |
C |
|
|
|
34 |
A |
69 |
B |
|
|
|
35 |
B |
70 |
A |
|
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