RRB Junior Engineer Previous year's solved questions
A ) high resistivity p - n junction diode
B ) a slow switching device
C ) an amplifying device
D ) a very heavily doped p - n junction diode
explanations
correct answer D ) a very heavily doped p - n junction diode
RRB JE 2014
RRB JE 2014
Q no 2. Which is not correct for oscillators ?
A ) signals may be sine wave
B ) signals may be square wave
C ) signals may be half sine wave
D ) signals broadcast by radio transmitters are example of oscillator signals
A ) signals may be sine wave
B ) signals may be square wave
C ) signals may be half sine wave
D ) signals broadcast by radio transmitters are example of oscillator signals
explanations
correct answer C ) signals may be half sine wave
RRB JE 2014
Q no 3. The output of a logical gate is 1 . When all its inputs are 0 , then the gate is either
A ) a NAND or an EX-OR Gate
B ) a NOR or an EX-NOR Gate
C ) an OR or an EX-NOR Gate
D ) an AND or an EX-OR Gate
A ) a NAND or an EX-OR Gate
B ) a NOR or an EX-NOR Gate
C ) an OR or an EX-NOR Gate
D ) an AND or an EX-OR Gate
explanations
correct answer B ) a NOR or an EX-NOR Gate
RRB JE 2014
Q no 4 . Lime mortar is generally made with
A ) Quick lime
B ) Fat lime
C ) Hydraulic lime
D ) white lime
A ) Quick lime
B ) Fat lime
C ) Hydraulic lime
D ) white lime
explanations
correct answer C ) Hydraulic lime
RRB JE 2014
Q no 5. In paints , linseed oil is used as
A ) a solidifier
B ) a driver
C ) a vehicle
D ) a water - proofing base
A ) a solidifier
B ) a driver
C ) a vehicle
D ) a water - proofing base
explanations
correct answer C ) a vehicle
RRB JE 2014
RRB JE 2014
Q no 6. In a situation where torsion is dominant , which one of the following is the desirable section ?
A ) angle section
B ) channel section
C ) I - section
D ) Box - type section
A ) angle section
B ) channel section
C ) I - section
D ) Box - type section
explanations
correct answer D ) Box - type section
RRB JE 2014
Q no 7 . Lateral ties in RCC columns are provided to resist
A ) Bending moment
B ) shear
C ) bucking of longitudinal steel base
D ) both bending moment and shear
A ) Bending moment
B ) shear
C ) bucking of longitudinal steel base
D ) both bending moment and shear
explanations
correct answer C ) bucking of longitudinal steel base
RRB JE 2014
Q no 8. In a computer , compiler is
A ) a program that places programs into memory and prepares them for execution
B ) a program that automate the translation of assembly language into machine language
C ) a program that accept a program written in a high level language and produces an object program
D ) a program that appears to execute a source program if it were machine language
A ) a program that places programs into memory and prepares them for execution
B ) a program that automate the translation of assembly language into machine language
C ) a program that accept a program written in a high level language and produces an object program
D ) a program that appears to execute a source program if it were machine language
explanations
correct answer C ) a program that accept a program written in a high level language and produces an object program
RRB JE 2014
RRB JE 2014
Q no 9. The operating system of a computer serves a software interface between the user and
A ) hardware
B ) peripheral
C ) memory
D ) screen
A ) hardware
B ) peripheral
C ) memory
D ) screen
explanations
correct answer A ) hardware
RRB JE 2014
Q no 10. Shortcut key to " centre align " the selected text in MS Word is
A ) ctrl + C
B ) ctrl + E
C ) ctrl + F
D ) ctrl + X
A ) ctrl + C
B ) ctrl + E
C ) ctrl + F
D ) ctrl + X
explanations
correct answer B ) ctrl + E
RRB JE 2014
Q no 11. The software in computer that transfer the object program from secondary memory to the main memory is called
A ) assembler
B ) loader
C ) linker
D ) task builder
A ) assembler
B ) loader
C ) linker
D ) task builder
explanations
correct answer B ) loader
RRB JE 2014
Q no 12. In a computer , the system is identifies a file by its
A ) Name
B ) absolute path
C ) file owner
D ) anode number
A ) Name
B ) absolute path
C ) file owner
D ) anode number
explanations
correct answer D ) anode number
RRB JE 2014
Q no 13. In a computer , virtual memory is
A ) an extremely large main memory
B ) an extremely large secondary memory
C ) an illusion of an extremely large memory
D ) a type of memory used in super computer
A ) an extremely large main memory
B ) an extremely large secondary memory
C ) an illusion of an extremely large memory
D ) a type of memory used in super computer
explanations
correct answer C ) an illusion of an extremely large memory
RRB JE 2014
Q no 14. In a computer , disk scheduling involves deciding
A ) which disk should be accessed next
B ) the order in which disk access request must be serviced
C ) the physical location where files should be accessed in the disk
D ) none of these
A ) which disk should be accessed next
B ) the order in which disk access request must be serviced
C ) the physical location where files should be accessed in the disk
D ) none of these
explanations
correct answer B ) the order in which disk access request must be serviced
RRB JE 2014
Q no 15. For engineering drawing , match the col. X and col. You
Col. X ( type )
P . Large sized letters
Q . Medium sized letters
R . Small sized letters
Col. Y ( use )
1 . Sub - titles
2. Dimensions
3. Main titles
A ) P - 3, Q - 1, R - 2
B ) P - 2, Q - 1 , R - 3
C ) P - 3, Q - 2, R - 1
D ) P - 2 , Q - 3 , R - 1
Col. X ( type )
P . Large sized letters
Q . Medium sized letters
R . Small sized letters
Col. Y ( use )
1 . Sub - titles
2. Dimensions
3. Main titles
A ) P - 3, Q - 1, R - 2
B ) P - 2, Q - 1 , R - 3
C ) P - 3, Q - 2, R - 1
D ) P - 2 , Q - 3 , R - 1
explanations
correct answer A ) P - 3, Q - 1, R - 2
RRB JE 2014
Q no 16. For drawing engineering curves , which is correct option ( e = eccentricity )
A ) for ellipse , e > 1
B ) for parabola , e < 1
C ) for hyperbola , e = 1
D ) for parabola , e = 1
A ) for ellipse , e > 1
B ) for parabola , e < 1
C ) for hyperbola , e = 1
D ) for parabola , e = 1
explanations
correct answer D ) for parabola , e = 1
RRB JE 2014
Q no 17. In a cantilever beam carrying gravity load , main reinforcement to resist bending moment is provided
A ) above the neutral axis
B ) as vertical stirrup
C ) as a helical reinforcement
D ) below the neutral axis
A ) above the neutral axis
B ) as vertical stirrup
C ) as a helical reinforcement
D ) below the neutral axis
explanations
correct answer A ) above the neutral axis
RRB JE 2014
Q no 18. In fluid flow , the line of constant piezometric head passes through two points which have the same
A ) elevation
B ) pressure
C ) velocity
D ) velocity potential
A ) elevation
B ) pressure
C ) velocity
D ) velocity potential
explanations
correct answer C ) velocity
RRB JE 2014
Q no 19 . A 30 m metric chain is found to be 0.1 m too short throughout the measurement , if the distance measured in recorded as 300 m , then the actual distance measured will be
A ) 300.1 m
B ) 301.0 m
C ) 299 m
D ) 310 m
A ) 300.1 m
B ) 301.0 m
C ) 299 m
D ) 310 m
explanations
correct answer C ) 299 m
RRB JE 2014
Q no 20. Which of the following methods of leveling eliminates the error due to curvature and refraction ?
A ) fly levelling
B ) levelling by equalizing the distance of backsight and foresight
C ) check levelling
D ) precise levelling
A ) fly levelling
B ) levelling by equalizing the distance of backsight and foresight
C ) check levelling
D ) precise levelling
explanations
correct answer B ) levelling by equalizing the distance of backsight and foresight
RRB JE 2014
Q no 21. Which statement is not correct in respect of engineering drawing ?
A ) circular features are indicated by the centre lines
B ) a visible line has precedence over a hidden line
C ) the face perpendicular to the direction of viewing are seen as edge view
D ) in isometric projection an isometric scale is used
A ) circular features are indicated by the centre lines
B ) a visible line has precedence over a hidden line
C ) the face perpendicular to the direction of viewing are seen as edge view
D ) in isometric projection an isometric scale is used
explanations
correct answer C ) the face perpendicular to the direction of viewing are seen as edge view
RRB JE 2014
RRB JE 2014
Q no 22. Select the correct option .the isometric projection of circle is :
A ) ellipse
B ) parabola
C ) hyperbola
D ) circle
A ) ellipse
B ) parabola
C ) hyperbola
D ) circle
explanations
correct answer A ) ellipse
RRB JE 2014
RRB JE 2014
Q no 23. Relative humidity is the percentage of the
A ) absolute humidity value to the amount of humidity actually present
B ) increase of humidity to absolute humidity
C ) amount of humidity actually present to the absolute humidity
D ) none of these
A ) absolute humidity value to the amount of humidity actually present
B ) increase of humidity to absolute humidity
C ) amount of humidity actually present to the absolute humidity
D ) none of these
explanations
correct answer C ) amount of humidity actually present to the absolute humidity
RRB JE 2014
RRB JE 2014
Q no 24. Which of the following property is generally not shown by metal ?
A ) electrical conduction
B ) sonorous in nature
C ) dulness
D ) ductility
A ) electrical conduction
B ) sonorous in nature
C ) dulness
D ) ductility
explanations
correct answer C ) dulness
RRB JE 2014
RRB JE 2014
Q no 25. The atomic number of an element is determined by
A ) the number of electrons in one atom
B ) the number of neutrons in one atom
C ) the valency of the element
D ) the number of protons in one atom
A ) the number of electrons in one atom
B ) the number of neutrons in one atom
C ) the valency of the element
D ) the number of protons in one atom
explanations
correct answer D ) the number of protons in one atom
RRB JE 2014
RRB JE 2014
Q no 26. In humans , bile juice is secreted by
A ) pancreas
B ) small intestine
C ) esophagus
D) liver
A ) pancreas
B ) small intestine
C ) esophagus
D) liver
explanations
correct answer D) liver
RRB JE 2014
RRB JE 2014
Q no 27. Sight of delicious food usually make mouth watery , it is a
A ) hormonal response
B ) neural response
C ) optic response
D ) olfactory response
A ) hormonal response
B ) neural response
C ) optic response
D ) olfactory response
explanations
correct answer B ) neural response
RRB JE 2014
RRB JE 2014
Q no 28. A closed thermodynamics system is one in which
A ) there is no energy or mass transfer across the boundary
B ) there is no mass transfer but energy transfer exists
C ) there is no energy transfer but mass transfer exist
D ) both energy and mass transfer take place across the boundary but mass transfer is controlled by value
A ) there is no energy or mass transfer across the boundary
B ) there is no mass transfer but energy transfer exists
C ) there is no energy transfer but mass transfer exist
D ) both energy and mass transfer take place across the boundary but mass transfer is controlled by value
explanations
correct answer B ) there is no mass transfer but energy transfer exists
RRB JE 2014
RRB JE 2014
Q no 29. Pressure reaches a value of absolute zero
A ) at the temperature of - 273 K
B ) under vacuum condition
C ) at the earth's center
D ) when molecular momentum of the system become zero
A ) at the temperature of - 273 K
B ) under vacuum condition
C ) at the earth's center
D ) when molecular momentum of the system become zero
explanations
correct answer D ) when molecular momentum of the system become zero
RRB JE 2014
RRB JE 2014
Q no 30. Zeroth law of thermodynamics state that
A ) two thermodynamics system are always in thermal equilibrium with each other
B ) if two systems are in thermal equilibrium then the third system will also be in thermal equilibrium
C ) two systems not in thermal equilibrium with a third system also not be in thermal equilibrium with each other
D ) when two systems are in thermal equilibrium with a third system they are in thermal equilibrium with each other
A ) two thermodynamics system are always in thermal equilibrium with each other
B ) if two systems are in thermal equilibrium then the third system will also be in thermal equilibrium
C ) two systems not in thermal equilibrium with a third system also not be in thermal equilibrium with each other
D ) when two systems are in thermal equilibrium with a third system they are in thermal equilibrium with each other
explanations
correct answer D ) when two systems are in thermal equilibrium with a third system they are in thermal equilibrium with each other
RRB JE 2014
RRB JE 2014
Q no 31. The discharge of hydrocarbons from petrol automobile exhaust is minimum when the vehicle is
A ) idling
B ) cruising
C ) breaking
D ) decelerating
A ) idling
B ) cruising
C ) breaking
D ) decelerating
explanations
correct answer B ) cruising
RRB JE 2014
Q no 32 . Which of the following is an advantage of forging ?
A ) Good surface finish
B ) low tooling cost
C ) close tolerance
D ) improved physical property
A ) Good surface finish
B ) low tooling cost
C ) close tolerance
D ) improved physical property
explanations
correct answer D ) improved physical property
RRB JE 2014
Q no 33. In a fillet welded joint , the weakest area of the weld is
A ) toe
B ) root
C ) throat
D ) face
A ) toe
B ) root
C ) throat
D ) face
explanations
correct answer C ) throat
RRB JE 2014
Q no 34. Which one of the following is the correct statement ? Gate is provided in moulds to
A ) feed the casting at constant rate
B ) give passage to gases
C ) compensate for shrinkage
D ) avoid cavities
A ) feed the casting at constant rate
B ) give passage to gases
C ) compensate for shrinkage
D ) avoid cavities
explanations
correct answer A ) feed the casting at constant rate
RRB JE 2014
Q no 35. Stroke of an I.C engine equals
A ) half the crank radius
B ) the crank radius
C ) twice the crank radius
D ) four times the crank radius
A ) half the crank radius
B ) the crank radius
C ) twice the crank radius
D ) four times the crank radius
explanations
correct answer C ) twice the crank radius
RRB JE 2014
Q no 36. The main constituent of moulding sand is
A ) clay
B ) silica
C ) alumina
D ) iron oxide
A ) clay
B ) silica
C ) alumina
D ) iron oxide
explanations
correct answer A ) clay
RRB JE 2014
Q no 37. Seam welding is
A ) a continuous spot welding process
B ) a multi spot welding process
C ) an arc welding process
D ) a thermit welding process
A ) a continuous spot welding process
B ) a multi spot welding process
C ) an arc welding process
D ) a thermit welding process
explanations
correct answer A ) a continuous spot welding process
RRB JE 2014
Q no 38. The electric field strength of a charge
A ) increase with distance
B ) decrease with cube of distance
C ) decrease with distance
D ) decrease with square of distance
A ) increase with distance
B ) decrease with cube of distance
C ) decrease with distance
D ) decrease with square of distance
explanations
correct answer C ) decrease with distance
RRB JE 2014
Q no 39. The hysteresis loss in a given magnetic materials may be decreased by
A ) laminating it
B ) increasing flux density through it
C ) increasing frequency of reversal of magnetisation
D ) decreasing maximum flux density established through it
A ) laminating it
B ) increasing flux density through it
C ) increasing frequency of reversal of magnetisation
D ) decreasing maximum flux density established through it
explanations
correct answer D ) decreasing maximum flux density established through it
RRB JE 2014
Q no 40. Which of the following can provide a digital signal ?
A ) sine wave
B ) square wave
C ) gradual tuning of a potentiometer
D ) slow change in the value of resistor
A ) sine wave
B ) square wave
C ) gradual tuning of a potentiometer
D ) slow change in the value of resistor
explanations
correct answer B ) square wave
RRB JE 2014
Q no 41. Potentiometer is basically a
A ) measuring instrument
B ) integrating instrument
C ) calibrating instrument
D ) indicating instrument
A ) measuring instrument
B ) integrating instrument
C ) calibrating instrument
D ) indicating instrument
explanations
correct answer
Q no 42. An element whose atoms have three valance electrons , the example of such element is
A ) silicon
B ) copper
C ) germanium
D ) aluminium
A ) silicon
B ) copper
C ) germanium
D ) aluminium
explanations
correct answer
Q no 43. A CRO can display
A ) DC signals only
B ) AC signals only
C ) both DC and AC signals
D ) time - invariant signals
A ) DC signals only
B ) AC signals only
C ) both DC and AC signals
D ) time - invariant signals
explanations
correct answer
Q no 44.
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