Railway Recruitment Board, Allahabad Assistant Engineer Examination Held on 08-01-2006
1. Traffic lights of three crossings change after every 48 seconds, 50 seconds and 72 seconds respectively. If they change simultaneously at 9 a.m. at what time will they change again simultaneously?
(a) 11 a.m.
(b) 9 : 30 a.m.
(c) 10 : 00 a.m.
(d) 10 : 30 a.m.
2. 3/4 part of a drum is filled up with kerosene. After taking out 30 litre of kerosene, 7/12 part of the drum is still filled. Find out the internal volume of the sum
(a) 300 litres
(b) 180 litres
(c) 200 litres
(d) 240 litres
3. Mukherjee gave 5/14 part of his money to his son, 2/3 part f the rest to his daughter and the rest to his wife. If he paid Rs 36000 to his wife, what was the entire amount?
(a) Rs 198000
(b) Rs 142000
(c) Rs 168000
(d) Rs 19200
4. Anu can do a work in 10 days and Manu in 15 days. Anu started and did the work for 4 days and then he left. How long will Manu take time to complete the rest work?
(a) 12 days
(b) 6 days
(c) 8 days
(d) 9 days
5. 20% managers are technocrats. There is at random committee of 5 managers, what is the probability of the fact that there would be 2 technocrats?
(a) 0.9421
(b) 0.2048
(c) 0.4000
(d) 0.4096
6. A trader allows two successive discounts of 20% and 10%. If he gets Rs 108 for an article, what is its cost price?
(a) Rs 160
(b) Rs 144
(c) Rs 148
(d) Rs 150
7. A hare runs at a speed of 5 m/s and a tortoise at a speed of 0.5 m/s. If they start their race from the same point. What would be the difference in distance covered by the hare and the tortoise in half in hour?
(a) 8.1 km
(b) 5.8 km
(c) 6.6 km
(d) 7.2 km
8. A bicycle agent allows 25% discount at the advertized rate and gets 20% profit at his cost price. What is its cost price at which he earns Rs 40?
(a) Rs 240
(b) Rs 360
(c) Rs 320
(d) Rs 280
9. In a certain code if FHQK means GIRL, how will WOMEN be written in the same code?
(a) VLNDM
(b) VNLDM
(c) FHQKN
(d) XPNFO
10. Find the term which is different from others
(a) FT
(b) DW
(c) HS
(d) JQ
11. Which Planet is nearest to the Sun?
(a) Jupiter
(b) Mars
(c) Mercury
(d) Venus
12. Solar eclipse occurs when
(a) Earth comes between moon and the sun
(b) Moon comes between the sun and earth
(c) Sun comes between moon and earth
(d) None of the above
13. Which is the currency of Burma (Myanmar)?
(a) Kyat
(b) Lira
(c) Baht
(d) Dollar
14. Indian Standard Time is associated with :
(a) 95° E longitude
(b) 
(c) 85°E longitude
(d) 90°E longitude
15. ‘Sick Man of Europe’ is the nick name of
(a) Yugoslavia
(b) Rome
(c) Turkey
(d) Italy
16. The French Revolution ended in
(a) 1799
(b) 1765
(c) 1789
(d) 1793
17. The H. Q. of UNO is located at
(a) Geneva
(b) New York
(c) Paris
(d) Washington D.C.
18. Who is the author of the book titled ‘An Idealist View of Life’?
(a) Dr. S. Radhakrishnan
(b) Dr. A. P. J. Abdul Kalam
(c) Vivekanand
(d) R. K. Narayan
19. Duleep Trophy is associated with
(a) Tennis
(b) Cricket
(c) Football
(d) Hockey
20. When was Indian National Congress founded and who was its first President?
(a) Vyomesh Chandra Banerjee, 1885
(b) Dadabhai Naorojee, 1886
(c) Surendranath Banerjee, 1885
(d) Ms. Anne Besant, 1886
21. Example of free positive state among the following is
(a) Region effect transistor
(b) Pentode
(c) Triode
(d) Diode
22. Which of the following has negative temperature coefficient of resistance?
(a) None of the following
(b) Thermistor
(c) Potentiometer
(d) None of (b) and (c)
23. Why does the sky appear blue?
(a) Scattering of light
(b) Total reflection of light
(c) Diffraction of light
(d) Interference of light
24. Which liquid is used in aneroid barometer?
(a) No liquid
(b) Alcohol
(c) Mercury
(d) Water
25. Rotameter is used to measure which of the following?
(a) Density
(b) Pressure
(c) Flow
(d) Velocity
26. Auto-cycle used in petrol engine is also called
(a) Secondary cycle
(b) Constant volume cycle
(c) Constant pressure cycle
(d) Constant heat cycle
27. ‘Bar’ is the unit of which of the following?
(a) Energy
(b) Viscosity
(c) Power
(d) Pressure
28. Hydrogen and deuterium are two
(a) Isotone
(b) Isotopes
(c) Isobars
(d) Isomers
29. Who was awarded Nobel Peace Prize for 2004?
(a) Yassar Arafat
(b) Shirin Abadi
(c) Nelson Mandela
(d) Wangari Maathai
30. Original name of the great novelist Munshi Premchand was
(a) Ajayav Rai
(b) Dhanpat Lal
(c) Ajayav Lal
(d) Dhanpat Rai
31. When was Mahatma Gandhi, the father of the nation, born?
(a) 1889
(b) 1859
(c) 1869
(d) 1879
32. Red blood corpuscles are formed in
(a) Bone marrow
(b) Liver
(c) Kidney
(d) Heart
33. Scurvy can be prevented with use of which of the following vitamins?
(a) D
(b) C
(c) B
(d) A
34. Myopia can be overcome with the use of which of the following?
(a) Ordinary glass
(b) Convex lens
(c) Concave lens
(d) Convexo-concave lens
35. Chinese pilgrim Hiuen-Tsang came to and lived in India under whose rule
(a) Harshavardhan
(b) Chandragupta Maurya
(c) Ashoka
(d) Samudragupta
36. Who had founded the Slave dynasty in India?
(a) Qutb-ud-din-Aibak
(b) Iltutmish
(c) Mohammed Gauri
(d) Balban
37. Which British Governor-General had started the Doctrine of Lapse Policy in India?
(a) Lord William Bentinck
(b) Lord Dalhousie
(c) Lord Canning
(d) Lord Hardinge
38. ‘Gidda’ is the folk dance of which state?
(a) Orissa
(b) Punjab
(c) Rajasthan
(d) Nagaland
39. “Liberty is our birth right; we shall seize it” Who said it?
(a) Bhagat Singh
(b) Ram Prasad Bismil
(c) Bal Gangadhar Tilak
(d) Mahatma Gandhi
40. Who elects the Members of Rajya Sabha?
(a) Lok Sabha
(b) Vidhan Sabha
(c) Vidhan Parishad
(d) None of these
41. ‘Sanyukta Panigrahi’ represents which classical dance?
(a) Bharatnatyam
(b) Kuchipudi
(c) Odissi
(d) Kathak
42. Who had presided over the inauguration session of the Constitution Assembly?
(a) Sachchidanand Sinha
(b) Rajendra Prasad
(c) Bhimrao Ambedkar
(d) N. Madhav Rao
43. Ghana Bird Sanctuary is located in which state?
(a) Gujarat
(b) West Bengal
(c) Madhya Pradesh
(d) Rajasthan
44. Who is the Chairman of Planning Commission?
(a) Prime Minister
(b) President
(c) Vice-President
(d) Governor
45. Bhakhra Nangal Project is on the river
(a) Beas
(b) Ravi
(c) Sutlej
(d) Chinab
46. Which is the last month of our national calendar?
(a) Chaitra
(b) Magh
(c) Falgun
(d) Baishakh
47. How many spokes are there in the wheel of National Flag?
(a) 24
(b) 22
(c) 26
(d) 25
48. Who is the author of the book, ‘My Life’?
(a) Richard Nixon
(b) Bill Clinton
(c) Indira Gandhi
(d) Sonia Gandhi
49. Speed of sound is the maximum in which of the following media?
(a) Steel
(b) Water
(c) Air
(d) Vacuum
50. Nicrome is the most appropriate material for making heating element, because of :
(a) Its high rusting point
(b) Its high resistance
(c) Its high melting point
(d) All of the above
51. An alloy of Copper and Zinc is called
(a) Y-alloy
(b) Bronze
(c) Brass
(d) Gunmetal
52. Which is the source of Mercury?
(a) Malachite
(b) Cinnabar
(c) Dolomite
(d) Microcline
53. What is the chemical name of Caustic soda?
(a) Sodium bicarbonate
(b) Calcium hypochlorite
(c) Potassium hydroxide
(d) Sodium hydroxide
54. The best characteristics of a fuse wire should be
(a) A wire high melting point
(b) A wire of high resistance and a low melting point
(c) A wire of low resistance
(d) All of the above
55. The internal resistance of a field effect transistor is
(a) Very high
(b) Zero
(c) Low
(d) Medium
56. Non-ferrous metals are hardened by
(a) Induction hardening
(b) Carbonizing
(c) Quenching
(d) Age hardening
57. Which of the following is a vector quantity?
(a) Magnetic potential
(b) Relative permeability
(c) Electric potential
(d) Current density
58. The only language which a computer can understand directly is
(a) Assembly language
(b) Machine language
(c) High level language
(d) All of the above
59. A microprogram is a
(a) Sequencing program for the control unit of any processor
(b) Program for microcomputers
(c) Program written in assembly language
(d) Program written in high level language
60. In a digital computer, an index register is a register to be used for
(a) Temporary storage of result
(b) Counting number of times a program is executed
(c) Performing arithmetic and logic operations
(d) Address modification purpose
61. The presence of earth in case of overhead lines
(a) Decreases the inductance
(b) Increases the capacitance
(c) Increases the inductance
(d) Decreases the capacitance
62. For an existing A.C. transmission line the string efficiency is 80%. Now, if D.C. voltage is supplied for the same setup, the string efficiency will be
(a) 100%
(b) 80%
(c) More than 80%
(d) Less than 80%
63. If α is the angle of voltage wave at which an R-L circuit is switched in and θ is the impedance angle of the R-L circuit, there will be no transient when the circuit is switched in, if
(a) α = 90 + θ
(b) α = θ
(c) α = 90 – θ
(d) None of these
64. The inertia constant H of a machine of 200 MVA is 2 p.u.; its value corresponding to 400 MVA will be
(a) 0.5
(b) 4
(c) 2
(d) 1
65. The inertia constant of two groups of machines, which swing together, are M1 and M2, the inertia constant of the system is
(a) (M1 + M2)/M1M2
(b) M1M2/(M1 + M2)
(c) M1 – M2M1 > M2
(d) M1 + M2
66. The coefficient of reflection for current for an open ended line is
(a) +0.5
(b) Zero
(c) −1
(d) +1
67. Distribution factor is always
(a) Less than unity
(b) More than unity
(c) Equal to unity
(d) None of these
68. A 50 Hz, four pole turbo alternator rated at 20 MVA, 13.2 kV ha an inertia constant H = 4 kW sec/kVA. The kinetic energy stored in the rotor at synchronous speed is
(a) 10 megajoules
(b) 80 megajoules
(c) 40 megajoules
(d) 20 megajoules
69. The corona loss on a particular system at 50 Hz is 1 kW/ phase/km. The corona loss on the same system with supply frequency 25Hz will be
(a) 0.667 kW/phase/km
(b) 1 kW/phase/km
(c) 0.5 kW/phase/km
(d) None of the above
70. If the fault current is 2000 amps, the relay setting 50% and the C.T. ratio 400/5, then the plug setting multiplier will be
(a) 50 A
(b) 25 A
(c) 15 A
(d) None of these
71. The most suitable CB for short line fault without switching resistor is
(a) SF6CB
(b) Air blast CB
(c) MO CB
(d) None of these
72. A system is said to be effectively grounded if its
(a) Ratio of 0/X1 < 3.0
(b) Neutral is grounded directly
(c) Ratio of X0/X1 > 3.0
(d) Ratio of R0/X1 > 2.0
73. The demand factor is equal to
(a) Average demand/connected load
(b) Maximum demand/connected load
(c) Connected load/maximum demand
(d) Maximum demand/average demand
74. A shunt fault is characterized by :
(a) Increase in current and frequency but reduction in p.f.
(b) Increase in current, frequency and p.f.
(c) Increase in current, reduction in frequency and p.f.
(d) None of the above methods
75. A three phase breaker is rated at 2000 MVA, 33 kV, its making current will be
(a) 89 kA
(b) 35 kA
(c) 49 kA
(d) 70 kA
76. The modulation index of an AM wave is changed from 0 to 1. Then transmitted power is
(a) Increased by 50%
(b) Unchanged
(c) Halved
(d) Doubled
77. In which o f the following motors commutator is used?
(a) Hysteresis motor
(b) Reluctance motor
(c) Repulsion motor
(d) Single split phase resistance start motor
78. If two stranded fuse wires are twisted together, then fusing current of this wire will be
(a) More than the sum of the fusing current of two wires
(b) Less than the sum of using current of two wires
(c) Sum of the fusing current of two wires
(d) None of the above
79. The resistance of primary and secondary side of a transformer are 12 ohms and 3 ohms respectively. What is the turns ratio (primary : secondary)?
(a) 1 : 4
(b) 1 : 2
(c) 2 : 1
(d) 4 : 1
80. The transformer through which the output of an audio amplifier is fed to a loudspeaker is meant for
(a) Current amplification
(b) Impedance matching
(c) Voltage amplification
(d) Resistance matching
81. The AGC voltage in a radio receiver is proportional to
(a) The amplitude of the I.F. carrier
(b) The amount of modulation
(c) The amplitude of audio signal
(d) None of the above
82. The output of a diode detector contains :
(a) RF ripple
(b) Modulating signal
(c) DC voltage
(d) All of these
83. When a positive gate voltage is applied to MOSFET, it is said to operate in :
(a) Conduction mode
(b) Enhancement mode
(c) Depletion mode
(d) None of the above
84. The theoretical maximum efficiency of a full-wave rectifier circuit is :
(a) Definitely more but less than double as that of a half-wave circuit
(b) The same as that of a half-wave circuit
(c) Double as that of a half-wave circuit
(d) None of the above
85. A Colpitt’s oscillator uses
(a) Both (b) and (c)
(b) A tapped inductor
(c) A tapped capacitor
(d) None of these
86. The forward amplification factor of a transistor corresponds to
(a) The voltage gain of CE amplifier
(b) The current gain of CE amplifier
(c) The current gain of CB amplifier
(d) The voltage gain of CC amplifier
87. A major advantage of an emitter follower is that it provides
(a) Minimum distortion
(b) Maximum gain
(c) Maximum efficiency
(d) Maximum output impedance
88. Which of the following is an active device?
(a) Electric press
(b) 100 W bulb
(c) Microphone
(d) SCR
89. A six bit alpha numeric code is able to code
(a) 128 characters
(b) 36 characters
(c) 48 characters
(d) 64 characters
90. For emitter-coupled logic, the switching speed is very high because
(a) Multi-emitter transistors are used
(b) The transistors are not saturated when conducting
(c) Negative logic is used
(d) Emitter-coupled transistors are used
91. Which of the following circuits exhibits memory?
(a) Bistable multivibrator
(b) NAND gate
(c) Ex OR gate
(d) Astable multivibrator
92. Modem is a
(a) Demodulator-modulator system
(b) Code changing system
(c) Program conversion system
(d) Modulator-demodulator system
93. In high power AM transmission, modulation is done at
(a) I.F. stage
(b) Buffer stage
(c) R. F. power stage
(d) Oscillator stage
94. Which of the following is used mostly to amplify the high frequency signals?
(a) Pentode
(b) Tetrode
(c) Triode
(d) Vacuum diode
95. The advantage of tunnel diode mixer is that it has
(a) Low local oscillation power requirement
(b) Low noise figure
(c) High conversion gain
(d) All of the above
96. The efficiency of an ideal Klystron is about
(a) 100%
(b) 25%
(c) 50%
(d) 75%
97. Kirchhoff’s law of current states that
(a) Total sum of the currents at the junction is zero
(b) Algebraic sum of the currents at the junction is zero
(c) Pure current flow at the junction is positive
(d) Without entrance of some current in the junction, no current can flow out of the junction
98. Wave guide cannot be used for the following frequencies
(a) Below 500 GHz
(b) Below 1 GHz
(c) Below 10 GHz
(d) Below 100 GHz
99. In octal code, the number 149 will be
(a) 225
(b) 154
(c) 178
(d) 254
100. When octal number (257)8 is converted into decimal, one gets
(a) (110)4
(b) (115)10
(c) (175)10
(d) (211)8
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