LINEMAN – NCA – LC/AI – PUBLIC WORKS – ELECTRICAL WING

PROVISIONAL ANSWER KEY
Question Paper Code: 2/2017/OL
Category Code: 150/2015
Exam: LIneman NCA
Medium of Question: English
Date of Test 16-01-2017
Alphacode A
Question1:-Kaziranga, the famous sanctuary of Assam is famous for :
A:-Tigers
B:-Rhinos
C:-Lions
D:-Elephants
Correct Answer:- Option-B
Question2:-In which of the following states is Tungabhadra project of irrigation ?
A:-Andhra Pradesh
B:-Bihar
C:-Tamil Nadu
D:-Maharashtra
Correct Answer:- Option-A
Question3:-According to census 2011 the sex ratio in India is :
A:-980
B:-960
C:-940
D:-930
Correct Answer:- Option-C
Question4:-Which of the following project started to ensure integrated development of children upto 6 years ?
A:-SSA
B:-RMSA
C:-NSPS
D:-ICDS
Correct Answer:- Option-D
Question5:-The nationalist leader who was killed in a police lathicharge in 1928 was :
A:-Madan Mohan Malaviya
B:-Lala Lajpat Rai
C:-Swami Sahajanand
D:-Suryasen
Correct Answer:- Option-B
Question6:-The Resolution of Non-cooperation Movement was passed in which special session of Indian National Congress.
A:-Calcutta
B:-Kanpur
C:-Nagpur
D:-Bombay
Correct Answer:- Option-A
Question7:-The Indian National Congress celebrated the Independence Day for the first time on :
A:-August 15, 1947
B:-January 26, 1950
C:-January 1, 1937
D:-January 26, 1930
Correct Answer:- Option-D
Question8:-Separate electorate for Muslims were first introduced through the following reforms.
A:-Montegue-Chelmsford reforms
B:-Government India Act of 1935
C:-Minto-Morley Reforms
D:-Council Act of 1892
Correct Answer:- Option-C
Question9:-In which part of the Kerala Oranges are grown ?
A:-Nelliyampathy
B:-Munnar
C:-Kasaragod
D:-Muthanga
Correct Answer:- Option-A
Question10:-Kabani one of the east flowing rivers of Kerala flows into :
A:-Tamil Nadu
B:-Karnataka
C:-Andhra Pradesh
D:-Maharashtra
Correct Answer:- Option-B
Question11:-Vagbhatananda started the Journal for Propogation of Nationalist ideas.
A:-Prachina Malayalam
B:-Akilathirattu
C:-Atmavidya kahalam
D:-Deepika
Correct Answer:- Option-C
Question12:-Who formed Nair Samudhaya Bhruthya Jana Sangam in 1914 ?
A:-K. Kelappan
B:-K.P. Kesava Menon
C:-K. Ramakrishna Pillai
D:-Mannath Padmanabhan
Correct Answer:- Option-D
Question13:-Who put forward the famous teachings “progress through the education, strengthen through Organisation” ?
A:-Chattampi Swamikal
B:-Sri Narayana Guru
C:-Dr. Palpu
D:-Ayyankali
Correct Answer:- Option-B
Question14:-Who is the author of the work ‘Jathikkummi’ ?
A:-K.P. Karuppan
B:-Sahodaran Ayyappan
C:-Vaikunda Swamikal
D:-Chattampi Swamikal
Correct Answer:- Option-A
Question15:-Who was the founder of ‘Yogakshema Sabha’ ?
A:-E.M.S. Namboothiripad
B:-V.T. Bhattathiripad
C:-K.P. Kesava Menon
D:-K.P. Padmanabha Menon
Correct Answer:- Option-B
Question16:-Who is the interim President of Brazil declared “South America’s first Olympic Games Open” at Rio 2016 ?
A:-Dilma Rousseff
B:-Carlos Nuzman
C:-Michel Temer
D:-Gisele Bundehen
Correct Answer:- Option-C
Question17:-Who is the one of the members of NITI Aayog ?
A:-Arundhathi Bhattacharya
B:-Ashok Khemka
C:-G.R. Aloria
D:-Ramesh Chand
Correct Answer:- Option-D
Question18:-Who is the present Chairman of Kerala Sahitya Akademi ?
A:-KPAC Lalitha
B:-Beena Paul
C:-Lenin Rajendran
D:-Vaishaken
Correct Answer:- Option-D
Question19:-Who won the men’s singles title in the 2016 Wimbledon Tennis ?
A:-Andy Murray
B:-Novak Djokovic
C:-Rafel Nadal
D:-Wavarinka
Correct Answer:- Option-A
Question20:-Which among the following was not the important works of Mahasweta Devi ?
A:-Rudali
B:-Jansir Rani
C:-India Another Millennium
D:-Aranyer Adhikar
Correct Answer:- Option-C
Question21:-Which type of motor is generally used in a portable drilling machine ?
A:-Repulsion motor
B:-Universal motor
C:-Capacitor run motor
D:-Shaded pole motor
Correct Answer:- Option-B
Question22:-Lead is prepared from the ore of :
A:-Bauxite
B:-Blast
C:-Hematite
D:-Galena
Correct Answer:- Option-D
Question23:-Which of the material is used to fix the screw on concrete wall and ceiling ?
A:-Link clips
B:-Bushings
C:-Rowl plug
D:-Saddles
Correct Answer:- Option-C
Question24:-Insulation resistance is measured in :
A:-Kilo ohms
B:-Mega ohms
C:-Megawatts
D:-Kilowatts
Correct Answer:- Option-B
Question25:-In an energy meter the holes on the aluminum disc helps to :
A:-Reduce the friction
B:-Reduce the weight of the disc
C:-Prevent creeping
D:-Reduce the resistance
Correct Answer:- Option-C
Question26:-Watt hour meter is classified as a :
A:-Integrating Instrument
B:-Deflecting Instrument
C:-Recording Instrument
D:-Indicating Instrument
Correct Answer:- Option-A
Question27:-Efficiency of a Secondary cell is :
A:-Impedance hour efficiency
B:-Ampere hour efficiency
C:-Resistance hour efficiency
D:-Volt hour efficiency
Correct Answer:- Option-B
Question28:-Which class of insulator is Mica ?
A:-Class F
B:-Class A
C:-Class B
D:-Class C
Correct Answer:- Option-D
Question29:-The slip rings are made of :
A:-Aluminium
B:-Silver
C:-Copper
D:-Cast iron
Correct Answer:- Option-C
Question30:-The operating temperature of a gas filled lamp is about __________.
A:-2500° C
B:-3000° C
C:-2000° C
D:-2700° C
Correct Answer:- Option-D
Question31:-If the speed of DC shunt motor increases the back emf :
A:-Decreases
B:-Constant
C:-Decreases and then increases
D:-Increases
Correct Answer:- Option-D
Question32:-To check the Internal and External radius of work pieces which tool is used ?
A:-Radius gauges
B:-Centre punch
C:-Scriber
D:-Callipers
Correct Answer:- Option-A
Question33:-Universal Motor requires :
A:-AC only
B:-DC only
C:-AC and DC
D:-DC and shunt type
Correct Answer:- Option-C
Question34:-All the sides of parallelogram are equal is called __________.
A:-Trapezium
B:-Rhombus
C:-Polygon
D:-Rectangle
Correct Answer:- Option-B
Question35:-Gun Metal is an alloy of __________, __________ and __________.
A:-Copper, Aluminium, Zinc
B:-Copper, Tin, Zinc
C:-Iron, Copper, Tin
D:-Iron, Tin, Zinc
Correct Answer:- Option-B
Question36:-1 kg weight = __________.
A:-9 Newtons
B:-10.8 Newtons
C:-9.8 Newtons
D:-8.5 Newtons
Correct Answer:- Option-C
Question37:-Torque `=` ` `
A:-Force `xx` Acceleration
B:-Force `xx` Distance
C:-Force `xx` Radius
D:-Force `xx` Speed
Correct Answer:- Option-C
Question38:-Aluminium ore is __________.
A:-Bauxite
B:-Antimony
C:-Graphite
D:-Galena
Correct Answer:- Option-A
Question39:-Freezing point of mercury is __________.
A:-35°C
B:-36°C
C:-38°C
D:-39°C
Correct Answer:- Option-D
Question40:-The ability of material to deform without breaking is called :
A:-Plasticity
B:-Elasticity
C:-Ductility
D:-Malleability
Correct Answer:- Option-A
Question41:-Whenever heat is developed in a conductor it is governed by the :
A:-Lenz’s Law
B:-Ampere’s Law
C:-Joule’s Law
D:-Newton’s Law
Correct Answer:- Option-C
Question42:-Squirrel cage induction motor is a :
A:-High starting torque motor
B:-Low starting torque motor
C:-Both (1) and (2)
D:-None of the above
Correct Answer:- Option-B
Question43:-Which are fundamental units ?
A:-CGS, FPS and MKS
B:-MKS, MKSA and CGS
C:-CGS, FPS and SI
D:-FPS and MKS
Correct Answer:- Option-A
Question44:-The flux density is the flux divided by :
A:-Conductivity
B:-Permeability
C:-Area of cross section
D:-Area of the current carrying conductor
Correct Answer:- Option-C
Question45:-A pure resistive circuit in AC follows the :
A:-Ohm’s Law
B:-Lenz’s Law
C:-Faraday’s Law of electrolysis
D:-Kirchhoff’s Law
Correct Answer:- Option-A
Question46:-Which of the following material has a negative temperature co-efficient of resistance ?
A:-Brass
B:-Copper
C:-Carbon
D:-Aluminium
Correct Answer:- Option-C
Question47:-100 W and 40 W lamps are of the same voltage rating the resistance of 40 W lamp is __________.
A:-Higher
B:-Lower
C:-The same
D:-Lower with AC higher with DC
Correct Answer:- Option-A
Question48:-Metric HP `=`
A:-746 watts
B:-746.5 watts
C:-735.5 watts
D:-735 watts
Correct Answer:- Option-C
Question49:-Which lamp will take more current ?
A:-40 watts 200 V
B:-100 watts 24 V
C:-1000 watts 230 V
D:-100 watts 230 V
Correct Answer:- Option-C
Question50:-Star/Delta starter used in a :
A:-DC series
B:-DC Shunt
C:-AC single phase
D:-Three phase Induction Motor
Correct Answer:- Option-D
Question51:-It is difficult to magnetise steel because of its :
A:-Low permeability
B:-High permeability
C:-High density
D:-High retentivity
Correct Answer:- Option-A
Question52:-One Farad is :
A:-One Coulomb per volt
B:-One volt per Coulomb
C:-Joule per volt
D:-Coulomb-Joules
Correct Answer:- Option-A
Question53:-Which of the following acts as depolarizer in a Lechlanche cell ?
A:-Zinc Chloride
B:-Carbon Powder
C:-Manganese dioxide
D:-Ammonium Chloride
Correct Answer:- Option-C
Question54:-What is the method of heat transfer accomplished in a hot water boiler ?
A:-Convection
B:-Conduction
C:-Radiation
D:-None of the above
Correct Answer:- Option-A
Question55:-Which motor is suitable for rolling mills ?
A:-DC shunt motor
B:-DC series motor
C:-DC cumulative motor
D:-DC differential motor
Correct Answer:- Option-C
Question56:-Composition of fuse wire :
A:-Lead 40 tin 60
B:-Lead 80 tin 20
C:-Lead 50 tin 50
D:-Lead 60 tin 40
Correct Answer:- Option-D
Question57:-Rated capacities of IC TP 300A switch :
A:-500 V
B:-1000 V
C:-230 V
D:-250 V
Correct Answer:- Option-A
Question58:-XC `=` “
A:-R-XL
B:-`2pi `Fl
C:-2`pi`FC
D:-`(1)/(2piFC)`
Correct Answer:- Option-D
Question59:-The power factor of a purely resistive circuit is :
A:-Zero
B:-Unity
C:-Leading
D:-Lagging
Correct Answer:- Option-B
Question60:-In star connection line current `=` “
A:-Phase current
B:-√3 Phase current
C:-√2 Phase current
D:-None of the above
Correct Answer:- Option-A
Question61:-Power transformers are designed to have maximum efficiency at :
A:-Half load
B:-No load
C:-Little more than full load
D:-Near full load
Correct Answer:- Option-D
Question62:-1 litre of water __________.
A:-980 gm
B:-1000 gm
C:-930 gm
D:-910 gm
Correct Answer:- Option-B
Question63:-Melting point of copper is __________.
A:-1230°C
B:-1085°C
C:-1088°C
D:-1083°C
Correct Answer:- Option-D
Question64:-In H.S.S. 18 : 4 : 1 Means __________.
A:-Tungsten : Vanadium : Chromium
B:-Tungsten : Chromium : Vanadium
C:-Vanadium : Tungsten : Chromium
D:-Chromium : Vanadium : Tungsten
Correct Answer:- Option-B
Question65:-Which colour wire is recommended for earth connection as per ISI Code ?
A:-Red
B:-Black
C:-Blue
D:-Green
Correct Answer:- Option-D
Question66:-What is the value of cos 0° ?
A:-1
B:-0
C:-√2
D:-√3
Correct Answer:- Option-A
Question67:-On which factors the frequency depends ?
A:-Directly proportional to speed and no. of poles
B:-Inversely proportional to speed and no. of poles
C:-Directly proportional to back emf
D:-Directly proportional to applied voltage and back emf
Correct Answer:- Option-A
Question68:-What is the complete formula for frequency ?
A:-`F=(PxxN)/(60)`
B:-`F=(Ns-N)/(60)`
C:-`F=` `(PxxE)/(120)`
D:-`F=“(PxxNS)/(120)`
Correct Answer:- Option-D
Question69:-Where the Damper winding is placed in synchronous motor ?
A:-Shaft
B:-Poles
C:-Poleshoes
D:-All of the above
Correct Answer:- Option-C
Question70:-Capacity of a capcitor filled in table fan or ceiling fan :
A:-1 to 1.5 µf
B:-3 to 3.5 µf
C:-2.5 to 3 µf
D:-2 to 2.5 µf
Correct Answer:- Option-D
Question71:-How the current coils and pressure coils are connected in megger ?
A:-At 90° to each other
B:-At 60° to each other
C:-At 45° to each other
D:-At 35° to each other
Correct Answer:- Option-A
Question72:-Supertension cables from :
A:-33000 Volt to 66000 Volt
B:-1000 Volt 11000 Volt
C:-11000 Volt to 22000 Volt
D:-22000 Volt to 33000 Volt
Correct Answer:- Option-D
Question73:-The distance between two adjacent line poles is called :
A:-Sag
B:-Span
C:-HSL
D:-Guarding
Correct Answer:- Option-B
Question74:-The distance that must be provided between line conductors for 440 V :
A:-50 cm – 60 cm
B:-45 cm – 60 cm
C:-45 cm – 50 cm
D:-30 cm – 45 cm
Correct Answer:- Option-D
Question75:-Rotary converter runs at :
A:-Below synchronous speed
B:-Synchronous speed
C:-Above synchronous speed
D:-All of the above
Correct Answer:- Option-B
Question76:-A series RL circuit has a resistance of 30 Ω and inductive resistance of 40 Ω. The impedance is __________.
A:-70 Ω
B:-50 Ω
C:-10 Ω
D:-35 Ω
Correct Answer:- Option-B
Question77:-The magnetic field produced in the stator of a three phase induction motor rotates at __________.
A:-Rotating speed
B:-Synchronous speed
C:-Asynchronous speed
D:-Slip speed
Correct Answer:- Option-B
Question78:-The meter used to measure the temperature of furnace is :
A:-Hydrometer
B:-Hygrometer
C:-Pyrometer
D:-Tachometer
Correct Answer:- Option-C
Question79:-The conduction in a JFET is always by the :
A:-Minority carriers
B:-Majority carriers
C:-Holes
D:-Electrons
Correct Answer:- Option-B
Question80:-FET is :
A:-Unipolar device
B:-Bipolar device
C:-Half Power device
D:-All of the above
Correct Answer:- Option-A
Question81:-The Binary number system has a radix of :
A:-10
B:-2
C:-16
D:-8
Correct Answer:- Option-B
Question82:-Class Y insulation temperature assigned __________ Range.
A:-105°C
B:-120°C
C:-90°C
D:-130°C
Correct Answer:- Option-C
Question83:-In an Inductive load power factor :
A:-Zero
B:-Leading
C:-Lagging
D:-Both
Correct Answer:- Option-C
Question84:-Form factor of an Electric Current :
A:-2
B:-1.11
C:-1.44
D:-1.732
Correct Answer:- Option-B
Question85:-Intermediate switches are used to control :
A:-One lamp two places
B:-One lamp one place
C:-2 lamp one place
D:-More lamp from different places
Correct Answer:- Option-D
Question86:-What is used for making guide holes drilling in metals ?
A:-Centre punch
B:-Ratchet Brace
C:-Auger-bit
D:-Hand Drill
Correct Answer:- Option-A
Question87:-Upto how much voltage is medium ?
A:-Upto 250 V
B:-Upto 560 V
C:-Upto 11000 V
D:-Upto 440 V
Correct Answer:- Option-B
Question88:-Nichrome is widely used for :
A:-Transformer winding
B:-Circuit connections
C:-Heater coils
D:-Lamp filaments
Correct Answer:- Option-C
Question89:-The resistance of a conductor on increasing the temperature :
A:-Increases
B:-Decreases
C:-Constant
D:-Varies
Correct Answer:- Option-A
Question90:-The unit for flux density is :
A:-Henry/`m^2` ` `
B:-Newton/`m^2`
C:-Webers/`m^2`
D:-None of the above
Correct Answer:- Option-C
Question91:-The magnetic potential in a magnetic circuit can be measured in terms of :
A:-Farads
B:-Coulombs
C:-EMF
D:-MMF
Correct Answer:- Option-D
Question92:-Which one of the following capacitors is only suitable for direct voltage ?
A:-Aluminium foil capacitor
B:-Metalic paper capacitor
C:-Unpoled aluminium elctrolyte capacitor
D:-Poled aluminium electrolyte capacitor
Correct Answer:- Option-D
Question93:-Which resistor is commonly used for general purpose application ?
A:-Wire-wound resistors
B:-Carbon resistors
C:-Metal film resistors
D:-Carbon film resistors
Correct Answer:- Option-B
Question94:-To solder resistors on a PCB the soldering iron wattage should be :
A:-25
B:-60
C:-150
D:-240
Correct Answer:- Option-A
Question95:-Intermediate frequency transformers use :
A:-Iron core
B:-Ferrite core
C:-Air core
D:-Both Iron core and Air core
Correct Answer:- Option-B
Question96:-In a DC circuit capacitor acts like a :
A:-Open Circuit
B:-Inductance
C:-Short Circuit
D:-Resistance whose value depends on the dielectic material
Correct Answer:- Option-A
Question97:-Which one of them is not a semiconductor ?
A:-Silicon
B:-Germanium
C:-Carbon
D:-Galium arsenide
Correct Answer:- Option-D
Question98:-The process of adding impurities to a pure semiconductors is known as :
A:-Diffusion
B:-Forming
C:-Doping
D:-Etching
Correct Answer:- Option-C
Question99:-When a germanium diode is connected in forward biased mode the voltage across the diode will be :
A:-Zero
B:-0.7 Volt
C:-Equal to applied voltage
D:-0.3 Volt
Correct Answer:- Option-D
Question100:-The function of a diode can be compared with a :
A:-Replay
B:-Switch
C:-Inductor
D:-Fuse
Correct Answer:- Option-B