ONGC Junior Assistant question paper

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1 During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0
the type of tool motion will be
A) circular Interpolation — clockwise
B) circular Interpolation — counterclockwise
C) linear Interpolation
D) rapid feed
Answer : (A)

2 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
A) Process I
B) Process II
C) Process III
D) Process IV
Answer : (B)

3 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
A) 10 microns
B) 20 microns
C) 30 microns
D) 60 microns
Answer: (D)

4 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
A) 2, 4, 90
B) 2, 4, 110
C) 3, 4, 90
D) 3, 4, 110
Answer : (C)

5 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
A) 0.651 x 10-3
B) 0.651
C) 6.51
D) 0.651 x 103
Answer : (B)

6 The tool of an NC machine has to move along a circular arc from (5,5) to (10,10)
while performing an operation. The centre of the arc is at (10,5). Which one of the
following NC tool path commands performs the above mentioned operation?
A) N010 G02 X10 Y10 X5 Y5 R5
B) N010 G03 X10 Y10 X5 Y5 R5
C) N010 G01 X5 Y5 X10 Y10 R5
D) N010 G02 X5 Y5 X10 Y10 R5
Answer : (D)

7 During a Morse test on a 4 cylinder engine, the following measurements of brake
power were taken at constant speed.
All cylinders firing 3037 kW
Number 1 cylinder not firing 2102 kW
Number 2 cylinder not firing 2102 kW
Number 3 cylinder not firing 2100 kW
Number 4 cylinder not firing 2098 kW
The mechanical efficiency of the engine is
A) 91.53%
B) 85.07%
C) 81.07%
D) 61.22%
Answer : (C)

8 In terms of theoretical stress concentration factor (Kt) and fatigue stress
concentration factor (Kf ), the notch sensitivity ‘q’ is expressed as
A) (Kf -1) (Kt -1)
B) (Kf -1) (Kt +1)
C) (Kt -1) (Kf -1)
D) (Kf +1) (Kt +1)
Answer : (A)

9 Starting from x0 = 1, one step of Newton-Raphson method in solving the equation
x3 + 3x -7 = 0 gives the next value (x1) as
A) x1 = 0.5
B) x1= 1.406
C) x1= 1.5
D) x1 = 2
Answer : (C)
10 The S-N curve for steel becomes asymptotic nearly at
A) 103 cycles
B) 104 cycles
C) 10 6 cycles
D) 10 9 cycles
Answer : (C)

11. In PERT analysis a critical activity has
A) maximum Float
B) zero Float
C) maximum Cost
D) minimum Cost
Answer : (B)

12 Environment friendly refrigerant R134a is used inthe new generation domestic
refrigerators. Itschemical formula is
A) CH C1 F2
B) C2 C13 F3
C) C2 C12 F4
D) C2 H2 F4
Answer : (D)

13 A solid cylinder (surface 2) is located at the centreof a hollow sphere (surface 1).
The diameter of the sphere is 1m, while the cylinder has a diameter and length of 0.5
m each. The radiation configuration factor F11 is
A) 0.375
B) 0.625
C) 0.75
D) 1
Answer : (C)

14 For a fluid flow through a divergent pipe of length L having inlet and outlet radii
of R1 and R2 respectively and a constant flow rate of Q, assuming the velocity to be
axial and uniform at any cross-section, the acceleration at the exit is
A) 2Q(R1 - R2) p LR23
B) 2Q2 (R1 - R2) p LR23
C) 2Q2 (R1 - R2) p2LR25
D) 2Q2 (R2 - R1) p2LR25
Answer : (C)

15 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
A) 0.651 x 10-3
B) 0.651
C) 6.51
D) 0.651 x 103
Answer : (B)

16 The tool of an NC machine has to move along a circular arc from (5,5) to (10,10)
while performing an operation. The centre of the arc is at (10,5). Which one of the
following NC tool path commands performs the above mentioned operation?
A) N010 G02 X10 Y10 X5 Y5 R5
B) N010 G03 X10 Y10 X5 Y5 R5
C) N010 G01 X5 Y5 X10 Y10 R5
D) N010 G02 X5 Y5 X10 Y10 R5
Answer : (D)

17 During a Morse test on a 4 cylinder engine, the following measurements of brake
power were taken at constant speed.
All cylinders firing 3037 kW
Number 1 cylinder not firing 2102 kW
Number 2 cylinder not firing 2102 kW
Number 3 cylinder not firing 2100 kW
Number 4 cylinder not firing 2098 kW
The mechanical efficiency of the engine is
A) 91.53%
B) 85.07%
C) 81.07%
D) 61.22%
Answer : (C)

18 In terms of theoretical stress concentration factor(Kt) and fatigue stress
concentration factor (Kf ), the notch sensitivity ‘q’ is expressed as
A) (Kf -1) (Kt -1)
B) (Kf -1) (Kt +1)
C) (Kt -1) (Kf -1)
D) (Kf +1) (Kt +1)
Answer : (A)

19 Starting from x0 = 1, one step of Newton-Raphson method in solving the equation
x3 + 3x -7 = 0 gives the next value (x1) as
A) x1 = 0.5
B) x1= 1.406
C) x1= 1.5
D) x1 = 2
Answer : (C)

20 A maintenance service facility has Poisson arrival rates, negative exponential
service time and operates on a ‘first come first served’ queue discipline. Break downs
occur on an average of 3 per day with a range of zero to eight. The maintenance crew
can service an average of 6 machines per day with a range of zero to seven. The mean
waiting time for an item to be serviced would be
A) 16 day
B) 13 day
C) 1 day
D) 3 days
Answer : (A)

21 The S-N curve for steel becomes asymptotic nearly at
A) 103 cycles
B) 104 cycles
C) 106 cycles
D) 109 cycles
Answer : (C)

22 In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is
of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be
A) 5 mm
B) 39 mm
C) 78mm
D) 120mm
Answer : (A)

23 Water at 42°C is sprayed into a stream of air at atmospheric pressure, dry bulb
temperature of 40°C and a wet bulb temperature of 20°C. The air leaving the spray
humidifier is not saturated. Which of the following statements is true?
A) Air gets cooled and humidified
B) Air gets heated and humidified
C) Air gets heated and dehumidified
D) Air gets cooled and dehumidified
Answer : (B)

24 The angle between two unit-magnitude coplanar vectors P(0.866, 0.500,0) and
Q(0.259, 0.966,0) will be
A) 0°
B) -30°
C) 45°
D) 60°
Answer : (C)

25 A lot has 10% defective items. Ten items are chosen randomly from this lot. The
probability that exactly 2 of the chosen items are defective is
A) 0.0036
B) 0.1937
C) 0.2234
D) 0.3874
Answer : (B)

26 Stokes theorem connects
A) a line integral and a surface integral
B) a surface integral and a volume integral
C) a line integral and a volume integral
D) gradient of a function and its surface integral
Answer : (A)

27 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
A) 8.33m2
B) 16.66m2
C) 39.68m2
D) 79.36m2
Answer : (D)

28 When the temperature of a solid metal increases,
A) strength of the metal decreaes but ductility increases
B) both strength and ductility of the metal decrease
C) both strength and ductility of the metal increase
D) strength of the metal increases but ductility decreases
Answer : (A)

29 A company produces two types of toys: P and Q. Production time of Q is twice that
of P and the company has a maximum of 2000 time units per day. The supply of raw
material is just sufficient to produce 1500 toys (of any type) per day. Toy type Q
requires an electric switch which is available @ 600 pieces per day only. The
company makes a profit of Rs. 3 and Rs. 5 on type P and Q respectively. For
maximization of profits, the daily production quantities of P and Q toys should
respectively be
A) 100, 500
B) 500, 1000
C) 800, 600
D) 1000, 1000
Answer : (C)

30 A spherical thermocouple junction of diameter 0.706 mm is to be used for the
measurement Aof temperature of a gas stream. The convective heat transfer coefficient
on the bead surface is 400 W/m2K. Thermophysical properties of
thermocouple material are k = 20 W/mK, C = 400 J/kg K and r = 8500 kg/m3. If the
thermocouple initially tot 30°C is placed in a hot stream of 300°C, the time taken by
the bead to reach 298°C, is
A) 2.35 s
B) 4.9 s
C) 14.7 s
D) 29.4 s
Answer : (B)

1.Women20-20 world Championship was Won By
(A)Australia
(B)England
(C)Pakistan
(D) India

2. Who is the Chairperson of Identification Authority of India (UIA)?
(A) Dr. M. S. Swaminathan
(B) Nandan Nilekani
(C) B. Shreedharan
(D) M. N. Buch

3. Who won the 2009 Wimbledon ?
(A) Pete Samptas
(B) Rafael Nadal
(C) Roger Federer
(d) John McEnroe

4. Which country has the largest Rail Network in the World?
(A)India
(B) U. K.
(C)China
(D) U.S.A.

5. Who is the Union Law Minister of India?
(A) Sharad Pawar
(B) Kapil Sibbal
(C) Verrappa Moily
(D) Hansraj Bharadwaj

6. The Birthday of Late Sarvepalli Radhakrishnan, ‘President of India’, is celebrated as?
(A)Lawyer’s Day
(B)Teacher’s Day
(C)Children’s Day
(D)Father’s Day

7. Tirupati is in?
(A) Andhra Pradesh
(B) Karnatalca
(C) Tamil Nadu
(D) MP

8. Kanha National Park is situated in which State ?
(A) Andhra Pradesh
(B) Karnatalca
(C) Tamil Nadu
(D) MP

9. River Narmada originates from?
(A) Bhedaghat
(B) Amarkantak
(C) Dindori
(D) Allahabad

10. Gandhiji started Dandi March in 1930
(A) Against atrocities committed on Harijarts
(B) Against imposition of Salt Tax
(C) Against the commencement of Communal Riot
(D) Against prohibition on Indian’s participating in elections

11. Who is the author of “My Experiments with Truth”?
(A)Nehru
(B) Tagore
(C) Gandhi
(D) Jinnah

12. NASA refers to
(A) National Aeronautics and Space Administration
(B) North Atlantic Space Agency
(C) North Airbase and Space Agency
(D) None of the above

13. I.S.O. 9000 is a?
(A) Quality Standard Mark
(B) Space Project
(C) Trade Technique
(d) None of these

14. Who among the following made a film on Mahatma Gandhi?
(A) Aparna Sen
(B) ShyamBenegal
(C) James Ivory
(d) Richard Attenborough

15. ‘Law Day’ is observed on
(A) 26th January
(B) 15th August
(C) 26th May
(d) 26th November

16. Which is the longest sea bridge in the country?
(A) Vidyasagar Sew, Kolkata
(B) Bandra-Worli Sea Link,Mumbai
(C) Bhakra-Nangal Project
(D) None of these

17. Dr. Rajendra Pachauri is a/an?
(A) Banker
(B) Industrialist
(C) Environmentalist
(D) Scientist

18. Who is the author of ‘Discovery of India’?
(A) Jawaharlal Nehru
(B) Mahatma Gandhi
(C) Sarojini Naidu
(D) Indira Gandhi

19. D.N.A. refers to?
(A)Di-oxyribo Nucleic Acid
(B)Di-oxide Nucleic Acid
(C)Different Nucleic Acid
(D) None of these.

20. S.M.S. is?
(A)Short Messaging Sequence
(B)Short Messaging Service
(C)Short Manageable Service
(D)Short and Medium Service

21. Padma Bhushan Award is?
(A) Gallantry Award
(B) Bravery Award
(C) Civilian Award
(d), Literary Award

22. Which city is known as the ‘City of Joy’?
(A)Delhi
(B) Mumbai
(C)Kolkata
(D) Chennai

23. Who won the ASHES Cricket Test Series held in year 2009?
(A)Australia
(B)England
(C)Pakistan
(D) None of these

24. Who appoints a Judge of a High Court?
(A) Governor
(B) Chief Minister
(C) President of i
(D) Chief Justice of India

25. Which of these animals is not shown in the National Emblem of India?
(A)Lion
(B) Horse
(C)Bull
(D) Elephant

26. Which is the Mother State of Chhattisgarh?
(A) Bihar
(B) Uttar Pradesh
(C) Uttarakhand
(D) Madhya Pradesh

27. Who won the men’s 100 m. final race at the recently held 2009 IAAF Athletics World Championship in Berlin?
(A) Tyson Gay of America
(B) Usain Bolt of Jamaica
(C) Asafa Powell of Jamaica
(D) Yang Yon Eun of South Korea

28. The Finance Minister has pro posed replacement of the Income Tax Act by?
(A) The Finance Act, 2008
(B) The Direct Tax Act
(C) The Indian Taxation Code
(D) The Direct Taxes Code

29. The Earth rotates around an axis pointing towards
(A) the moon
(B) the pole star
(C) the sun
(D) Venus

30. Which one of the following aptly describes the generalised shape of the continents?
(A)Circular
(B) Hexagonal
(C)Rectangular
(D) Triangular

31.An Air India plane recently crashed at …….. Airport
(A) Mumbai
(B) Kolkata
(C) Mangalore
(D) Srinagar

32.Vikas Krishnan was in news Recently. He is a ?
(A) Boxer
(B) Writer
(C)Music Director
(D) Head of VIKAS NGO

33. During 1994-2007 grean house gas Emissions in India Fell By
(A) 25 percent
(B) 30 percent
(C) 35 percent
(D) 40 percent

34.First European Country to Ban Burqua is ?
(A) Belgium
(B) France
(C) UK
(D) Germany

Contact Details:
Oil and Natural Gas Corporation Limited
Vasant Kunj II,
Vasant Kunj
New Delhi,
Delhi 110070
India

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