Overseer/Draftsman Gr II, Public Works Irrigation 274/2015 Answer key

Category Code -274/2015
Exam - Overseer/Draftsman Gr II Electrical
Department - Public Works/ Irrigation
Qualifications: SSLC + Certificate in Electrical Engineering (course of 2 years), MGTE or KGTE Group Certificate in Electrical Engineering
Question Paper Code- 30/2017/OL 
Date of Test - 17-04-2017

1. In two watt meter method of power measurement one watt meter shows negative reading the power factor of the load is
   • bellow 0.5 lagging
   • 0.8 lagging
   • unity
   • in between 0.5 and 0.8 lagging
   
   
2. Ear to Ear resistance of wet human body is about
   • 150 ohm
   • 100 ohm
   • 400 ohm
   • 300 ohm
   
   
3. To get different colour in same LED different fixed voltage want to be applied across it. To get red colour in LED the fixed voltage want to applied across it is
   • 2 V
   • 1.8 V
   • 2.1 V
   • 2.2 V
   
   
4. The size of copper plate used in plate earthing system is
   • 60 cm × 60 cm × 3.15 mm
   • 60 cm × 60 cm × 6.3 mm
   • 30 cm × 30 cm × 3.15 mm
   • 60 cm × 60 cm × 3.3 mm
   
   
5. Composition of plumbers solder is _______ % Tin and _______ % Lead.
   • 35 and 65
   • 60 and 40
   • 65 and 35
   • 50 and 60
   
   
6. The frequency of electricity supply in India is
   • 45 Hz
   • 60 Hz
   • 55 Hz
   • 50 Hz
   
   
7. In a transistor both collector base junction and emitter base junction is reverse bias the transistor is said to be
   • None of these
   • Cut off state
   • Saturation state
   • Active state
   
   
8. The polarity of interpole is in the case of DC generator and motor is
   • ame as next main pole ahead in the case of motor and generator in the direction of rotation
   • same as the next main pole behind in the case of motor and generator in the direction of rotation of motor and generator
   • same as next main pole behind in the case of motor and same as next main pole ahead in the generator in the direction of rotation
   • same as next main pole behind in the case of generator and next main pole ahead in the motor in the direction of rotation
   
   
9. Series type ohm meter is best suited for measuring
   • high resistance
   • low resistance
   • medium resistance
   • all of these
   
   
10. Pitch factor of a winding is the ratio of
    • No of slot/pole pitch
    • Winding pitch/pole pitch
    • Pole pitch/winding pitch
    • None of these
    
    
11. Efficiency of full wave rectifier is about
    • 81.20 %
    • 40.80 %
    • 83.10 %
    • 82.10 %
    
    
12. Barrier voltage of silicon crystal is
    • 0.7 v
    • 0.3 v
    • 0.9 v
    • 1.1 v
    
    
13. The instrument used for measuring insulation resistance of equipment is
    • Earth tester
    • Contact resistance meter
    • Megger
    • Ohm meter
    
    
14. The type of motor used in vacuum cleaner is
    • Induction run motor
    • Universal motor
    • Capacitor start induction run motor
    • Capacitor start capacitor run motor
    
    
15. The standard secondary out put of a current transformer is
    • 7A
    • 10A
    • 5A
    • 3A
    
    
16. When capacitor testing with ohm meter, the ohm meter shows infinite resistance, the capacitor is
    • Open
    • Leakey
    • Good
    • Shorted
    
    
17. One Webber is equal to _____ Maxwell.
    • 10000
    • 10000000
    • 1000000
    • 100000
    
    
18. The working principle of earth tester is
    • Wheatstone bridge principle
    • Voltage divider method
    • Fall of potential method
    • Meter bridge principle
    
    
19. Type of cooling used in Distribution transformer is
    • AN, OFN
    • OB, AB
    • AN
    • AN, ON
    
    
20. Fluorescent lamp is a
    • High pressure mercury vapour lamp
    • Low pressure mercury vapour lamp
    • High pressure sodium vapour lamp
    • Arc lamp
    
    
21. When Dynamo meter type meters are used as watt meters, the fixed and movable coils are
    • Both coils are movable
    • Fixed coil is current coil and moving coil is pressure coil
    • Fixed coil is pressure coil and moving coil is current coil
    • Can be arranged as either current coil is fixed and pressure coil movable and vice-versa
    
    
22. The distance between earth electrode and adjacent building should not less than
    • 2 m
    • 1 m
    • 5 m
    • 1.5 m
    
    
23. G series MCB's are used for protecting
    • Resistive load
    • All of these
    • Inductive load
    • Capacitive load
    
    
24. The major cause of creeping error in induct in type energy meter is
    • Vibration
    • Stray magnetic field
    • Over compensation friction
    • Over voltage
    
    
25. The most commonly used AC motor is
    • Squirrelcage induction motor
    • Slip ring induction motor
    • Universal motor
    • Repulsion motor
    
    
26. For getting maximum efficiency in a sodium vapour lamp the lamp temperature to be maintained about
    • 150°c
    • 220°c
    • 380°c
    • 320°c
    Question error
    
    
27. FET is a
    • voltage control device
    • current controlled device
    • bipolar device
    • power control device
    
    
28. The minimum horizontal clearance between when the line passing through adjesent building is
    • 1.219 M
    • 1.112 M
    • 1.713 M
    • 3.962 M
    
    
29. The commercial method of making Permanent Magnet is
    • Induction method
    • Divider touch method
    • Single touch method
    • Double touch method
    
    
30. Among the following which cable is used for Railway signaling purpose
    • Torpodure cable
    • PVC cable
    • Lead sheet cable
    • Armed cable
    
    
31. Melting point of copper is
    • 2200° C
    • 660° C
    • 1083° C
    • 490° C
    
    
32. The frequency equation of Hartley oscillator is
    • 1/(2 π √LC_T)
    • 1/(2 π √(6RC))
    • 1/(2 π √CL_T)
    • 1/(2 π √(L_TC_T))
    
    
33. The capacity of cells are usually expressed in
    • Kilo watt hour
    • Ampere hour
    • Kilo volt ampere
    • Watt-hour
    
    
34. Most efficient and effective damping method is
    • Eddy current damping
    • Air friction damping
    • All of these
    • Fluid friction damping
    
    
35. Among them which motor has highest starting torque
    • Universal motor
    • Capacitor start induction run motor
    • Permanent capacitor motor
    • Shaded pole motor
    
    
36. Copper loss of a transformer is 120 watt at it's 1/4th load watt will be the copper loss 1/8th full load
    • 64 watt
    • 30 watt
    • 192 watt
    • 240 watt
    
    
37. To change DOR of Repulsion motor
    • change the supply terminal of motor
    • change the brush position of motor
    • all of these
    • change the motor terminals
    
    
38. Among them which material is shows strong Dia magnetism
    • Aluminum
    • Copper
    • Bismuth
    • Silver
    
    
39. Nickel iron cell is also known as
    • Junger cell
    • Primary cell
    • Edison cell
    • Voltaic cell
    
    
40. The main purpose Twin Tube connections in a industries to
    • Get more light
    • Avoid stroboscopic effect
    • Avoid glair
    • All of these
    
    
41. Resistance above _________ Ω is called high resistance.
    • 10000 Ω
    • 100000 Ω
    • 1000000 Ω
    • 10000000 Ω
    
    
42. The yoke of large DC machine is made of
    • soft iron
    • cast steel
    • wrought iron
    • cast iron
    
    
43. Fourth colour band of a resistance is brown in four colour band system, the tolerance of the resistance is
    • 2%
    • 5%
    • 3%
    • 1%
    
    
44. Nickel Iron cell are widly used in Aircraft engineering because of its
    • High efficiency
    • Good mechanical strength
    • Heavy rate discharging capacity
    • High voltage
    
    
45. XLPE cable is a type of cable. XLPE stands for
    • Cable-Linked Poly Ethylene Cable
    • Cross-Linked Poly Ethylene Cable
    • Cross-Linked Poly Ester Cable
    • Cable-Linked Poly Ester Cable
    
    
46. Silver plated mica capacitors are best suited for ______ application.
    • High voltage application
    • Radio frequency application
    • High frequency application
    • Power factor correction
    
    
47. The maximum safe temperature can with stand class H insulating material is
    • 155° C
    • 200° C
    • 120° C
    • 180° C
    
    
48. The speed control method used in domestic mixer grinder is
    • tapped field control method
    • all of these
    • adding series resistance
    • voltage control method
    
    
49. When Induction motor are started with star-delta starter the voltage applied across the winding when put in star position is
    • 75 %
    • 67.70 %
    • 50 %
    • 57.70 %
    
    
50. The cells of 2 volt and each having an internal resistance of 0.2 Ω are jointed in series. If 10 Ω external resistance is connected accross the circuit, what will be the current flowing through the
    • 1.5A
    • 1.67A
    • 2A
    • 1.8A
    Question error
    
    
51. Unit of inductive reactance is
    • Coloumb
    • Ohm
    • Fared
    • Henry
    
    
52. In Geyser the type of insulation provided in between the inner and outer chamber is
    • Glass wool
    • Rubber
    • Asbestose
    • Mica
    
    
53. A semiconducting material numbered as BC 149, the device is
    • Silicon transistor
    • Germanium transistor
    • Silicon diode
    • Silicon photo diode
    
    
54. A circuit contain R and L in series, R = 8 Ω and  L = 0.02 henry, what will be the power factor of the circuit when is connected across 50 Hz, 50 volt ac supply
    • 0.821
    • 0.786
    • 0.752
    • 0.886
    
    
55. The purpose of bedding provided in cable is
    • Protect the cable from mechanical injury
    • Protect metallic sheet from mechanical injury
    • Protect the cable from atmosphere
    • Prevent entering moisture to the cable
    
    
56. The speed of DC shunt motor is drops slightly from no load to full load is due to
    • IaRa drop in armature
    • Increase in back emf
    • Increase in field flux
    • Decrease in field flux
    
    
57. Double squirrel cage Induction rotors are used in Induction motors for getting
    • Smooth operation
    • High starting torque
    • High power
    • Avoid magnetic locking
    
    
58. A 50 volt meter want to be extend to measure 250 volt meter. The resistance of the meter is 5000 Ω, what will be the value of multiplier required
    • 50000 Ω
    • 20000 Ω
    • 25000 Ω
    • 40000 Ω
    
    
59. The out put of harmonic oscillators is
    • Square wave
    • All of these
    • Triangular wave
    • Sine wave
    
    
60. Regenerative braking is possible when the speed of the motor is
    • Above synchronous speed
    • Bellow synchronous speed
    • Same as synchronous speed
    • All of these
    
    
61. The type of capacitor used in capacitor start induction run motor is
    • Paper Capacitor
    • Mica Capacitor
    • Ceramic Capacitor
    • Air Capacitor
    
    
62. Widly used semiconducting material is
    • Germanium
    • Silicon
    • Carbon
    • Bismuth
    
    
63. V-curve of a synchronous motor is the relation between
    • supply voltage and current
    • field voltage and field current
    • armature voltage and armature current
    • armature current and field current
    
    
64. The type DC generator used for electoplating is
    • shunt generator
    • series generator
    • cumulative compound generator
    • long shunt compound generator
    
    
65. The type of DC compound generator used for arc welding is
    • Under compound generator
    • Level compound generator
    • Differential compound generator
    • Over compound generator
    
    
66. The joint used in over head line where for increasing the length of conductor where considerable tensile stress acted is
    • T-Joint
    • Western Union Joint
    • Brittania Joint
    • Married Joint
    
    
67. Over load coil of 3 point DC motor starter is connected
    • in series with shunt field
    • in series with armature coil
    • in parallel with series field
    • in parallel with shunt field
    
    
68. The type of file used in ordinary filing purpose is
    • Second cut
    • Smooth
    • Bastard
    • Rough
    
    
69. In a safety sign, It's shape is circular, red border and cross bar black signal in white background the sign is
    • Prohibition sign
    • Mandatory sign
    • Information sign
    • Warning sign
    
    
70. In a winding the number of coils/pole/phase is one, the winding is called
    • Whole coil winding
    • Distributed winding
    • Concentrated winding
    • Balanced winding
    
    
71. Polarisation is the problem of _______ type of cell.
    • Nickel iron cell
    • Lead acid cell
    • Voltaic cell
    • Dry cell
    
    
72. Fusing factor of HRC fuse is
    • 1.2
    • 1.4
    • 1.3
    • 1.1
    
    
73. A moving coil volt meter shows 220 volt when it is connected across an AC supply. What will be the voltage shows when it is measured using CRO ?
    • 311 V
    • 220 V
    • 380 V
    • 244 V
    
    
74. In semi direct lighting system _________ % of light reaches to the working plane.
    • 50 – 90 %
    • 60 – 90 %
    • 90 – 100 %
    • 10 – 40 %
    
    
75. Buchholz relay is a
    • Electronic relay
    • Thermal relay
    • Gas operated relay
    • Phenumatic relay
    
    
76. Three phase two element watt meter method is best suited for the measurement of power in
    • Three phase unbalanced load
    • Three phase balanced load
    • None of these
    • Three phase balanced and unbalanced load
    
    
77. Solar cell is a
    • Thermister
    • Varactor diode
    • Photo resistor
    • Photo diode
    
    
78. In EHT line the maximum permissible voltage drop is
    • 12.50 %
    • 5 %
    • 10 %
    • 3 %
    
    
79. The process by which isolate the supply of oxygen to the fire is known as
    • cooling
    • smothering
    • starving
    • extinguishing
    
    
80. Valancy of aluminum atom is
    • 2
    • 1
    • 4
    • 3
    
    
81. The book 'Poverty and Progress' is authored by
    • Proudhon
    • Karl Marx
    • Deepak Lal
    • Deepak Chandra
    
    
82. "They may call me Hitler, they may call me a Supper-Hitler" Whose words are this
    • Vallabhai Patel
    • Subhash Chandra Bose
    • Mussolini
    • Indira Gandhi
    
    
83. The Chairman of the fourteenth Finance Commission of India is
    • Dr.Y.V. Reddy
    • Urjit Patel
    • Dr.S.R. Reddy
    • L.N. Reddy
    
    
84. Who called 'Volga' as "The Queen of our rivers"
    • Alexandre Dumas
    • Maxim Gorky
    • Lenin
    • Stalin
    
    
85. The total number of domestic passengers handled at the Indian airports during 2014 – 15 was
    • 125.53 Million
    • 201.43 Million
    • 101.34 Million
    • 151.34 Million
    
    
86. The total number of Post Offices in India is about
    • 155015
    • 200050
    • 300000
    • 100012
    
    
87. Jati Nasini Sabha was founded by
    • Swami Ananda Theerthan
    • Brahmananda Sivayogi
    • Vagbhadananda
    • Sree Narayana Guru
    
    
88. "His spirit will always prevail in India" was a famous remark made on 15th December, 1950 at London by
    • Jawaharlal Nehru
    • Lord Mountbatten
    • Winston Churchill
    • Dr. Rajendra Prasad
    
    
89. The famous remark that John F. Kennedy and Richard M. Nixon lacked 'Political brains' was made in a speech delivered at United Nations by
    • Jawaharlal Nehru
    • Khrushchev
    • Fidel Castro
    • Fulgencio Batista
    
    
90. Who declared that "Political freedom is the life breath of a Nation" ?
    • Sury Sen
    • Aurobindo Ghosh
    • Subhash Chandra Bose
    • Bhagat Singh
    
    
91. The book, Of Fortunes and War : Clare Hollingworth is authored by
    • Jim Mc Curry
    • Patrick Garret
    • Clare Hollingworth
    • Pessy Hull
    
    
92. "A day will come when India also remember her and cherish her" was the words of Jawaharlal Nehru about
    • Kamala Nehru
    • Sarojin Naidu
    • Captain Lakshmi
    • Rani Gaidilieu
    
    
93. The first Secretary of the Punjab Naujawan Bharat Sabha was
    • Bhagat Singh
    • Chandrashekar Azad
    • Sury Sen
    • Jatin Das
    
    
94. Mahatma Gandhi founded the All India Harijan Sangh in
    • 1932
    • 1931
    • 1940
    • 1930
    
    
95. Mangal Pande was hanged to death on
    • 29, March 1858
    • 29, March 1857
    • 20, March 1857
    • 20, March 1858
    
    
96. Lord Dufferin ridiculed the Congress as "a microscopic minority of the people" in a public speech delivered in
    • 1886
    • 1888
    • 1887
    • 1885
    
    
97. The newspaper Al Hilal was started in
    • 1912
    • 1910
    • 1920
    • 1940
    
    
98. Mokshapradipam is a famous work of
    • Chattampi Swamikal
    • Vaikunda Swamikal
    • Brahmananda Sivayogi
    • Neelakantan Namboothiripad
    
    
99. The present Chairman of Kerala Public Service Commission is
    • K. Radhakrishnan
    • Dr. K.S. Radhakrishnan
    • Salahuddin
    • M.K. Sakeer
    
    
100. C. Kesavan was arrested and jailed on account his seditious speech delivered at Kozhenchery on
     • 25, March 193
     • 11, May 1935
     • 11, June 1936
     • 20, May 1936