Furnace Operator - Kerala Municipal Common Service/ Electrician - Health Services/ Lineman PWD Answer Key 26/2019

electrician

Post: Furnace Operator, Electrician, Lineman
Department: Kerala Municipal Common Service, Health Services, Public Works (Electrical Wing)
Category Code: 27/2018, 283/2018, 284/2018
Question Paper: 26/19
Qualification: SSLC + Qualification relevent to the post (ITI, engineering etc)
Date of Test: 25-06-2019


If you find mistakes, comment below

  1. Who won the ‘Odakkuzhal Award’ of 2018?
    • Dr. M. Leelavathi
    • E.V. Ramakrishnan
    • Sugalhakumari
    • N.S. Madhavan

  2. First Scheduled Caste woman passed school final in Kerala
    • Dhakshayani Velayudhan
    • Mayilamma
    • C.K. Janu
    • Dayabai

  3. National income of India first scientifically calculated under :
    • Dadabhai Naoroj1
    • Jawaharlal Nehru
    • Prof. P.C. Mahalanobis
    • Prof. V.K.R.V. Rao

  4. Headquarters of Asian Development Bank
    • New Delhi
    • Tokyo
    • Manila
    • Kathmandu

  5. World population reached 600 crores in the year
    • 1987
    • 1999
    • 2000
    • 1989

  6. The winner of Women Qatar Open in 2019
    • Elise Mertens
    • Simona Halep
    • Serena Williams
    • Petra Kvitova

  7. The 10+2 +3 pattern of Education introduced by
    • Mudaliar Commission
    • Radhakrishnan Commission
    • Kothari Commission
    • Hunter Commission

  8. Name the only planet that has a day longer than its year
    • Mercury
    • Jupiter
    • Neptune
    • Venus

  9. First woman justice of Supreme Court of India
    • Indu Malhotra
    • K.K. Usha
    • M. Fathima Beevi
    • Anna Malhotra

  10. The Act which provides 100 days assured employment every year to every rural household :
    • NREGA
    • NFWP
    • NEGF
    • REGP

  11. National Consumers Day
    • March 10th
    • March 1st
    • December 1st
    • December 24th

  12. Mahalwari settlement was introduced by
    • Cornwallis
    • Holt Meckenzie
    • Col. Read
    • Munro

  13. The system of cultivation that the planter produced indigo on those lands which were under his direct control :
    • Ryoti Cultivation
    • Intensive Cultivation
    • Ny Cultivation
    • Transitional Cultivation

  14. Partition of Bengal revoked by
    • Lord Ripon
    • Lord Curzon
    • Lord Lytton
    • Lord Hardinge

  15. Atmavidya Sangham organised by
    • Vagbhatananda
    • Vaikunda Swamikal
    • Chattampi Swamikal
    • Pandit K.P. Karuppan

  16. The land of Naduvazhi
    • Brahmaswam
    • Cherikkal
    • Iqta
    • Devadana

  17. The Constitution incorporated 10 Fundamental Duties by which Amendment Act of 1976?
    • 45th
    • 42nd
    • 52nd
    • 41st

  18. First woman climbed Agasthyakoodam peak in Kerala
    • Arunima Sinha
    • Dhanya Suresh
    • Dhanya Sonal
    • Bachhendri Pal

  19. The first book completely printed in Malayalam
    • Malabar Manuel
    • Samkshepavedartham
    • Bible
    • Paschimodayam

  20. Gandhi hailed it as “a miracle of modern times”
    • Temple Entry Proclamation
    • Paliyam Satyagraha
    • Shanar Agitation
    • Vaikom Satyagraha

  21. A conductor has specific resistance ‘ρ’, length ‘l’ and area of cross section ‘a’, then its resistance ‘R’ 1s
    • R=ρl/a
    • R=ρa/l
    • R=la/ρ
    • R=ρ/la

  22. Unit of specific resistance is
    • Ω
    • Ω-M2
    • Ω-M
    • Ω-M3

  23. Which material has negative temperature coefficient of Resistance?
    • Tungsten
    • Eureka
    • Manganin
    • Mica

  24. If three resistors of 4Ω are connected in parallel, find the effective resistance.
    • 12Ω
    • 1.33Ω
    • 1.2Ω

  25. If a 230 V rated heater is connected to 110 V supply, the heat produced by it changes to
    • 2 times
    • 1/4 times
    • 1/2 times
    • 4 times

  26. Mathematical expression of Coulomb’s law is
    • F∝ Q1Q2/d2
    • F∝ Q1Q2/d
    • F∝ d/(Q1Q2)
    • F∝ d2/(Q1Q2)

  27. Two positive charges of 1 coulomb are placed 1 metre apart in air. Force of repulsion between them is nearly
    • 1N
    • 8.854x10-12N
    • 9x109N
    • 1.38x10-23N

  28. Two capacitors of 4μF and 2μF are connected parallel to a circuit, then the effective capacitance is
    • 1.33 μF
    • 8 μF
    • 2 μF
    • 6 μF

  29. A capacitor of _______ farad stores a charge of 1 coulomb at 10 volts.
    • 10
    • 1
    • 0.1
    • 11

  30. Relative permeability of Vacuum is
    • 1
    • 4π x 10-7
    • 8.854 x 10-12H/M
    • 0

  31. Unit of magnetic flux density is
    • weber
    • weber/metre2
    • amp-turn
    • henry

  32. Ina lead acid cell +ve plate is made up of
    • PbO2
    • Pb
    • H2SO4
    • PbSO4

  33. Electrolyte of Nickel-Iron batteries is
    • H2SO4
    • NaOH
    • KOH
    • Ni(OH)4

  34. Example of absolute instrument is
    • PMMC voltmeter
    • MI Ammeter
    • Watt-meter
    • Tangent Galvanometer

  35. The electrostatic effect directly utilized for the operation of
    • Voltmeter
    • Ammeter
    • Watt-meter
    • Ohmmeter

  36. Which material is used for making control springs in electrical measuring instruments?
    • Phosphor Bronze
    • Phosphor Brass
    • Tin-Lead Alloy
    • Silicon Steel

  37. Working principle of thermocouple ammeter 1s based on the
    • Hall effect
    • Skin effect
    • Seebeck effect
    • Light effect

  38. kWh meter is ________ instruments.
    • Indicating
    • Recording
    • Deflecting
    • Integrating

  39. A 50 Hz alternating current has the time-period _______ of second.
    • 50
    • 0.02
    • 0.1
    • 1

  40. rms value of alternating current is
    • 0.637Im
    • 1.11Im
    • 1414Im
    • 0.707Im

  41. In AC series circuits Q factor is l l
    • 1/cosФ
    • 1/sinФ
    • cosФ
    • sinФ

  42. Resonant frequency of AC series circuit is
    • f0=1/(LC)
    • f0=1/2π√(LC)
    • f0=√(LC)/2π
    • f0=1/√(LC)

  43. Power factor of R-C series circuit 1s
    • zero
    • between zero and one
    • unity
    • greater than one

  44. Nature of induced current in the dc generator is
    • Alternating
    • Direct
    • Rectified DC
    • Unidirectional

  45. Steinmetz formula is related with
    • Hysteresis loss
    • Eddy current loss
    • Friction loss
    • Field copper loss

  46. The critical resistance of a DC generator is the resistance of
    • Commutator
    • Armature
    • Field
    • Brush

  47. The wave winding 1s suitable for _____ voltage, ______ current dc generators.
    • high, low
    • high, high
    • low, high
    • low, low

  48. In dc machines the armature winding must be a
    • lap winding
    • wave winding
    • closed one
    • simplex winding

  49. Which type of DC generators do not need equalizers for satisfactory parallel operation?
    • Under compound
    • Series
    • Over compound
    • Level compound

  50. The direction of rotation of a dc motor is found by
    • Fleming’s right hand rule
    • Faraday’s laws
    • Fleming’s left hand rule
    • Lens law

  51. No load voltage of a dc generator is 240 V and rated load voltage is 220 V. Find the voltage regulation of the generator.
    • 8.3%
    • 91%
    • 9.1%
    • 83%

  52. Which of the following Generator has poorest voltage regulation?
    • Shunt
    • Series
    • Compound
    • Flat compound

  53. The external characteristics of a shunt generator is obtained from its characteristics.
    • Internal
    • Performance
    • Open circuit
    • Load

  54. Voltage equation of a dc motor is
    • V=Eb-IaRa
    • V=Eb+ IaRa
    • V=Eb-Ia2Ra
    • V= ФZNP/A

  55. Condition for maximum mechanical power developed in a de motor is
    • Eb=V
    • Eb>V
    • Eb<V
    • Eb=V/2

  56. At constant load, the speed of a dc motor is affected by
    • Back emf
    • Armature current
    • Field flux
    • Armature resistance

  57. A compound motor is best suited for driving
    • Reciprocating pump
    • Crains and hoists
    • Lathes
    • Electric locomotives

  58. For dc shunt motors, which method is used for wide and very sensitive speed control?
    • Armature voltage control
    • Flux control method
    • Tapped field control
    • Ward-Leonard method

  59. Which of the following test requires two identical dc shunt machines?
    • Retardation test
    • Swinburn’s test
    • Hopkinson’s test
    • No load test

  60. Among the following, which is the transmission voltage used in India?
    • 1000 V
    • 40000 V
    • 220000 V
    • 440 V

  61. The maximum temperature permitted for class ‘F’ insulation 1s
    • 155°C
    • 105°C
    • 120°C
    • 180°C

  62. Which material is used for making resistors of loading rheostats?
    • Tungsten
    • Manganin
    • Constantan
    • Brass

  63. Earthing is necessary to give protection against
    • Overloading
    • Electric shock
    • Short circuit
    • Electric fire

  64. The main purpose of core in a transformer is to
    • Carry primary current
    • Prevent eddy current
    • Eliminate hysteresis loss
    • Decrease reluctance of Magnetic circuit

  65. Buchholz relay is _________ type relay.
    • Solenoid
    • Induction
    • Thermal
    • Attracted armature type

  66. Fusing factor of a fuse is
    • More than one
    • Less than one
    • Equal to one
    • Zero

  67. Unit of Luminous Intensity
    • lux
    • candle
    • lumen
    • lumens/m2

  68. Which type of electric lamp is used in Cinema projectors?
    • Incandescent lamp
    • Carbon arc lamp
    • Neon lamp
    • Discharge lamp

  69. Open circuit test on a transformer is carried out to measure its
    • Total loss
    • Cu loss
    • Efficiency
    • Core loss

  70. Stray loss in DC machines is accounted as
    • Magnetic and electrical loss
    • Copper loss and core loss
    • Magnetic and Mechanical loss
    • Windage loss and friction loss

  71. Materials for donor impurities in intrinsic semi-conductor
    • Monovalent
    • Trivalent
    • Tetravalent
    • Pentavalent

  72. Which type squirrel cage motors have high starting torque, low starting current and normal slip?
    • Class A
    • Class C
    • Class B
    • Class F

  73. Stroboscopic method is used to find of an induction motor.
    • torque
    • slip
    • speed
    • efficiency

  74. Which of the following motor is suitable for compressors?
    • Universal motor
    • Two value capacitor run motor
    • Capacitor start and run motor
    • Shaded pole motor

  75. The ratio of intensity of magnetisation I to the magnetising force H is called
    • Permeability
    • Magnetic potential
    • Magnetic field strength
    • Susceptibility

  76. Which method is used for measuring dielectric loss of a capacitor?
    • Schering Bridge
    • Anderson Bridge
    • Hay’s Bridge
    • De Sauty Bridge

  77. The sum of the three phase emfs of a three phase ac supply is
    • √3 Vm
    • Vm
    • Vm/2
    • Zero

  78. Brass contains Copper and _______.
    • Tin
    • Lead
    • Zinc
    • Nickel

  79. The earth resistance of any earthing should not be more than
    • 1 ohm
    • 5 ohm
    • 10Ω
    • 3 ohm

  80. The minimum size of earth conductor used in a domestic installation is
    • 8 SWG
    • 12 SWG
    • 16 SWG
    • 14 SWG

  81. In an ac circuit 3Ω resistor is connected in series with a 4Ω capacitive reactance. The impedance of the circuit is
    • 25Ω

  82. The speed of synchronous motor is always
    • Less than synchronous speed
    • Synchronous speed
    • More than synchronous speed
    • Low speed at heavy load

  83. The working of a synchronous motor is similar to
    • DC series motor
    • The power transformer
    • Induction motor
    • The transmission of mechanical power by a shaft

  84. Synchronous motor runs with
    • lagging pf only
    • leading pf only
    • both lagging and leading pf
    • Unity power factor only

  85. Which of the following motor has centrifugal switch?
    • Hysteresis motor
    • Reluctance motor
    • Stepper motor
    • Shaded pole motor

  86. Zero power factor method is used to find _______ of an alternators.
    • Power factor
    • Synchronous impedance
    • Efficiency
    • Voltage regulation

  87. A 10Ω resistor, 0.1 H inductor and 150 μF capacitor are connected in series and give a 200 V, 50 Hz ac supply. Find the power factor of the circuit.
    • 0.6
    • 0.5
    • 0.7
    • 0.9

  88. At the time of 3 phase power measurement using two watt-meter method; watt-meter 1 reads positive and watt-meter 2 reads zero, then the power factor is
    • 0.5
    • 0.8
    • Unity
    • Zero

  89. If a 400 V, 5 HP motor having a cold resistance of armature is 0.25Ω and full load current of 50 A is connected directly to the 400 V supply. The motor draws a starting current of
    • 50 A
    • 1600 A
    • 1760 A
    • 500 A

  90. Face-plate type controller 1s used for starting a
    • DC series motor
    • DC shunt motor
    • Compound motor
    • Linear induction motor

  91. If the value of a resistor is 4.7 ± 5% Ω, then its colour code is
    • Gray Violet Gold Silver
    • Gray Blue Silver Gold
    • Yellow Violet Gold Gold
    • Yellow Violet Silver Gold

  92. In colour coding of resistors, which band indicates the tolerance value?
    • First
    • Fourth
    • Third
    • Fifth

  93. Which one of the following motor does not change its direction of rotation?
    • Split phase motor
    • Universal motor
    • Stepper motor
    • Shaded pole motor

  94. Which diode is used in measuring instruments for protection from overload?
    • PN junction diode
    • Zener diode
    • 1N 4007
    • LDR

  95. Ripple frequency of a centre tap fullwave rectifier is at 230 V, 50 Hz supply is
    • 100 Hz
    • 50 Hz
    • 0 Hz
    • 25 Hz

  96. Peak inverse voltage of fullwave bridge rectifier is
    • 2Vm
    • Vm/2
    • 4Vm
    • Vm

  97. The binary number 11011 is equal to the decimal
    • 27
    • 25
    • 29
    • 11

  98. The value of forbidden energy gap of silicon atom is
    • 1.43 eV
    • 0.72 eV
    • 0.5 eV
    • 1.12 eV

  99. Which material is used for thermal insulation in electrical heating equipments?
    • Mica
    • Asbestos
    • Bakelite
    • Enamel

  100. In staircase wiring the lamp is operated with
    • two intermediate switch
    • two one-way switches
    • one one-way and one two-way switch
    • two two-way switches

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