18-09-2018 TRADESMAN ELECTRICAL

TRADESMAN(ELECTRICAL),

TECHNICAL EDUCATION

EXAM DATE:18-09-2018

ONLINE EXAM PRACTICE NOW

1.Who was the main writer who assisted William Logan in the writing the ‘Malabar Manual’?

A.O.Chanthu Menon

B.A.Ayyappan

C.V.P.Menon

D.Itti Achuthan

Ans:A

2.Malabar Manual was first published in--------

A.1889

B.1887

C.1886

D.1880

Ans:C

3.Magna Carta was signed in-----------

A.1215

B.1342

C.1299

D.1432

Ans:A

4.Prathyaksha Raksha Daiva Sabha was founded by-------

A.Poykayil Yohannan

B.K.Madhavan

C.Dr.Palpu

D.Vagbhatananda

Ans:A

5.Who was known as Kerala Lincoln?

A.E.M.S.Nambudirippad

B.Pandit Karuppan

C.A.K.Gopalan

D.K.R.Gouri Amma

Ans:B

6.Atmavidya Kahalam was written by------in 1929.

A.Vagbhatananda

B.Vakkom Abdul Khadar

C.Kalidasan

D.Swami Sivayogi

Ans:A

7.The famous Kizhariyur bomb case was in------

A.1857

B.1940

C.1945

D.1942

Ans:D

8.Who started servants of Mary Immaculate?

A.K.Karuppan

B.Chavara Achan

C.K.Krishnan

D.Makthi Thangal

Ans:B

9.The Slavery abolished in America was--------

A.1900

B.1864

C.1865

D.1765

Ans:C

10.Right to Health is mentioned in -----------of U.N.Declaration Human Rights.

A.Article 8

B.Article 20

C.Article 25

D.None of these

Ans:C

11.Kallumala Samara was broken out in 1915 in the ----------district of Kerala.

A.Thiruvanathapuram

B.Kozhikode

C.Alappuzha

D.Kollam

Ans:D

12.’Liberty,Equality and Fraternity’is the slogan of ---------Revolution.

A.American

B.French

C.Chinese

D.None of these

Ans:B

13.The most prominent work on Partition is Freedom at Midnight was written by-------

A.Annie Besant

B.Dominique Lapierre

C.Larry Augustine

D.Abdul Kalam

Ans:B

14.At the time of Indian Independence Hyderabad was ruled by-------

A.Ali Khan

B.Mohammed

C.Abdul Razak

D.None of these

Ans:A

15.Who was the murderer of Canolly,the District Collector of Malabar?

A.Poker Haji

B.Kunhali

C.Haider

D.Vadakkeveettil Mohammed

Ans:C

16.The Dutch East India Company started in-----

A.1600

B.1602

C.1605

D.1700

Ans:B

17.The famous Aruvippuram prathishta was the challenge against the Brahmin by-------

A.Nanu Asan

B.Guru Govind

C.K.Karuppan

D.Palpu

Ans:A

18.Hunter Commission was appointed in----

A.1880

B.1881

C.1884

D.1882

Ans:D

19.Bharath Matha Society was founded by------

A.J.Mchatterjee

B.Chandra Shekhar Azad

C.N.Bhattachari

D.None of these

Ans:A

20.Who had written ‘India’s struggle for Independence’?

A.Bipin Chandra

B.Sumit Sarkar

C.Ray Choudhary

D.A.R.Desai

Ans:A

21.Unit of Electrical energy is-------

A.Ampere Hour

B.Kilowatt Hour

C.Kilowatt

D.Kilovolt Ampere

Ans:B

22.Magnitude of electrical shock on a human body depends upon---------

A.Current flow through the body

B.Path of electric current through the body

C.Duration of electric shock

D.All of the above

Ans:D

23.One of the following components is a passive device--------

A.Field effect transitor

B.Silicon controlled rectifier

C.Air core inductor

D.Zener diode

Ans:C

24.Armouring is provided in the underground cable to safeguard against------

A.Mechanical injury

B.Moisture entry

C.White ant attack

D.Brusting of failure

Ans:A

25.The main switch is used in single phase supply is to be provided with---------

A.Fuse in both line and neutral

B.A link in the line and a fuse in the neutral

C.A fuse in the line and a link in the neutral

D.None of these

Ans:C

26.Which of the following units is the correct one for reactive power?

A.Kilovolt Ampere

B.Kilowatt

C.Megawatt

D.Kilovolt Ampere reactive

Ans:D

27.The type of insulatore used for holding high transmission over head conductor on straight running of poles………..

A.Post insulator

B.Pin insulator

C.Stay insulator

D.Shackle insulator

Ans:B

28.A water pump lifts less water than earlier,what could be the reason for this fault?

A.Impiller damaged

B.Level of water in pump is too high

C.Pump running in reverse direction

D.Motor running fast

Ans:A

29.In an energy meter the holes of the aluminium disc helps to—

A.Prevent creaping error

B.Reduce the resistance

C.Reduce the friction

D.Reduce the weight of disc

Ans:A

30.Earth leakage circuit breaker is used to disconnect the supply from---------

A.Short circuit

B.Ground fault

C.Open circuit

D.Overload

Ans:B

31.In a transformer,the chemical contained inside the Breathe is------

A.Mineral oil

B.Salt

C.Silica gel

D.Water

Ans:C

32.The device which can be used as switch as well as protective device is----------

A.Double pole Iron cald switch

B.Intermediate switch

C.Earth leakage circuit breaker

D.Miniature circuit breaker

Ans:D

33.Size of hammer is specified by----------

A.Length of hammer

B.Diameter of the phase

C.Height of the head

D.Weight of the hammer

Ans:D

34.Gravity controlled instrument has to be kept in---------

A.Vertical position

B.Horizontal position

C.Inclined position

D.Any position

Ans:A

35.A sodium vapour lamp gives which colour of light?

A.Green colour

B.White colour

C.Yellow colour

D.Red colour

Ans:C

36.High pressure mercury vapour lamp has three pin bayonet cap lamp holder.This is done for-----

A.To make a three phase connection

B.Prevent wrong connection

C.To earth the lamp

D.None of the above

Ans:B

37.A choke is generally used in series with fluorescent tube circuit to--------

A.Improve the power factor

B.Prevent flickering

C.To make high voltage for conduction

D.Suppress radio interference

Ans:C

38.Three phase distribution transformer are usually connected in---------

A.Delta/Delta

B.Star/Star

C.Star/Delta

D.Delta/Star

Ans:D

39.Conductivity of aluminium is-----

A.Sixty percent to that of copper

B.Forty percent to that of copper

C.Eighty percent to that of copper

D.Fifty percent to that of copper

Ans:A

40.The flux per unit area of material is known as-------

A.Current density

B.Flux density

C.Magnetic lines of force

D.Electromotive force

Ans:B

41.Which lamp has more resistance with same applied voltage?

A.Forty watts

B.Hundred watts

C.Sixty watts

D.Fifteen watts

Ans:D

42.Tool used for cutting,twisting or holding of wires or cables for terminations-------

A.Insulated combination plier

B.Insulated side cutting plier

C.Insulated round nose plier

D.Insulated flat nose plier

Ans:A

43.Alternating current is converted into direct current by-----------

A.Alternator

B.Motor

C.Rectifier

D.Transformer

Ans:C

44.Buchholz relay is generally used for the protection of---------

A.Transmission line

B.Transformer

C.Alternator

D.Generator

Ans:B

45.Which of the following is conventional source of energy?

A.Coal

B.Solar

C.Small Hydro

D.Wind

Ans:A

46.Advantage of Hydro electric power station is----------

A.Low cost

B.Free from pollution

C.No fuel transportation problem

D.All of the above

Ans:D

47.Which of the following system electric power may be transmitted?

A.Overhead system

B.Underground system

C.Overhead and underground system

D.None of these

Ans:C

48.The fuel used in nuclear generating power plant is------------

A.Crude oil

B.Isotopes of Uranium

C.Liquified hydrogen

D.Methane

Ans:B

49.What is the basic three electrical quantities?

A.Resistance,Capacitance,Inductance

B.Power,Voltage,Conductance

C.Voltage,Current,Resistance

D.Current,Reactance,Inductance

Ans:C

50.Value of short circuit current will flow in the circuit is-------

A.Zero

B.Very low

C.Normal

D.Infinite

Ans:D

51.Motor used in household refrigerator is---------

A.D.C.Series motor

B.Single phase induction motor

C.D.C.Shunt motor

D.Universal motor

Ans:B

52.Which motor would you select for vaccum cleaner?

A.Universal motor

B.Repulsion motor

C.Hysterisis motor

D.None of these

Ans:A

53.The damper winding in a synchronous motor is generally used-----

A.To provide  starting torque only

B.To reduce noise level

C.To reduce eddy current

D.To prevent hunting and provide the starting torque

Ans:D

54.An Auto transformer which has only one winding may be used as---------

A.Step-up transformer

B.Step-down transformer

C.Step-up and Step-down transformer

D.None of these

Ans:C

55.The unit of solid angle is a----------

A.Lumen

B.Radian

C.Steradian

D.Candela

Ans:B

56.Full form of MCCB is---------

A.Moulded Case Circuit Breaker

B.Moulded Case Current Breaker

C.Miniature Current Circuit Breaker

D.Minimum Current Circuit Breaker

Ans:A

57.The star delta starter is used in-------

A.Flour mills

B.Pumps

C.Machine tools

D.All of these

Ans:D

58.Motor used in ceiling fan is----

A.Split phase motor

B.Capacitor motor

C.A.C.Series motor

D.Repuslion motor

Ans:B

59.Rotor resistance starter used to which of the following motors?

A.Slip ring motor

B.Heavy duty squirrel cage motor

C.Medium duty squirrel cage motor

D.Double cage motor

Ans:A

60.The thickness of insulation provided in the conductor in cable depends upon the factor is--------

A.Resistivity of the conductor

B.Current to be carried

C.Operating voltage

D.Power factor

Ans:C

61.The structure of pin type insulator is wavy.It is done to icnrease---------

A.Mechanical strength

B.Puncture strength

C.Flash over voltage

D.Thermal strength

Ans:C

62.Carbon are lamp are commonly used in-------

A.Cinema projectors

B.Domestic lighting

C.Street lighting

D.Photography

Ans:A

63.Which of the following is one not a part of circuit breaker?

A.Explosion plot

B.Conservator

C.Operating mechanism

D.Fixed and moving contact

Ans:B

64.The handle of Iron box is made up of------

A.Bakelite

B.Ebonite

C.Chromium

D.Bakelite and Ebonite

Ans:D

65.Lumen per watt is the unit of ---

A.Light flux

B.Luminous efficiency

C.Luminous intensity

D.Brightness

Ans:B

66.The generating voltage and frequency in India is------

A.11 kV and 50 Hz

B.11kV and 60 Hz

C.220 kV and 50 Hz

D.220 kV and 60 Hz

Ans:A

67.The lamp generally used for lighting purpose is------

A.Carbon filament lamp

B.Arc lamp

C.Tungsten filament lamp

D.All of the above

Ans:C

68.In running condition voltage across tube starter is----

A.110 V

B.180 V

C.220 V

D.Zero

Ans:D

69.Capacitor is used in tube circuit is-------

A.To improve the power factor

B.To improve the voltage

C.To safeguard the tube

D.To give the full light

Ans:A

70.The synchronous speed of an induction motor refers to the speed of the --------

A.Rotor

B.Armature

C.Speed marked on the name plate

D.Rotating magnetic field

Ans:D

71.Three phase induction motor started by DOL starter,the short circuit current is protected by------

A.No volt coil

B.Overload relay

C.Back off fuse

D.Protective earth connection

Ans:C

72.Cables are drawn through the pipe and terminated.The system of wiring is called------

A.PVC casing and caping wire

B.Conduit wiring

C.Teak wood batton wiring

D.Teak wood casing caping

Ans:B

73.As compared to rewirable fuses HRC fuse have--------

A.High speed of operation

B.High rupturing capacity

C.No ageing effect

D.Low rupturing capacity

Ans:B

74.The following apllication D.C.is essential--------

A.Electric traction motor

B.Electric home appliances

C.Machine shop motor

D.Illumination

Ans:A

75.Which of the following does not change in a transformer?

A.Current

B.Voltage

C.Frequency

D.All of these

Ans:C

76.Which winding in a transformer has more number of turns?

A.Low voltage winding

B.High voltage winding

C.Winding does not depend upon number of turns

D.None of these

Ans:B

77.In a D.C.machine the number of brushes in lap winding is-----

A.Same number of poles

B.Double number of poles

C.Half of the number of poles

D.Two numbers

Ans:A

78.Compensating windings are used in D.C.generator is------

A.To reduce eddy current by local short circuit

B.To provide path for the circulation of cooling air

C.To neutralize the cross magnetic effect of armature reaction

D.None of these

Ans:C

79.Red colour wire is generally known for------

A.Insulated wire

B.Earth wire

C.Neutral wire

D.Phase wire

Ans:D

80.Stepper motor is--------

A.Single phase motor

B.Two phase motor

C.Three phase motor

D.D.C.motor

Ans:D

81.The positive pole of dry cell is made of-----

A.Copper

B.Zinc

C.Carbon

D.Mercury

Ans:C

82.The energy of secondary cells are renewed by-----

A.Heating it

B.Passing current through it

C.Renewing its chemicals

D.It can’t be renewed at all

Ans:B

83.When cells are connected in parallel,the result is------

A.The current capacity increases

B.The current capacity decreases

C.The EMF capacity increases

D.The EMF capacity decreases

Ans:A

84.The composition of electrician solder is---------

A.Tin-40%,Lead-60%

B.Tin-50%,Lead-50%

C.Tin-90%,Lead-10%

D.Tin-60%,Lead-40%

Ans:D

85.Fire extinguisher used in the event of electric fire is-----

A.Dry power type

B.Gas cartridge type

C.Halon type

D.Foam type

Ans:C

86.Britania straight joint is used for -------

A.Increase the length of the conductor

B.Increase the resistance of the conductor

C.Increase the conductivity of  the conductor

D.Increase the mechanical strength of the conductor

Ans:A

87.E.C.E.stands for-----

A.Electrovalent Chemical Equilant

B.Electro Chemical Equilant

C.Electrolysis Cathode Equilant

D.Electro Cardio Equilant

Ans:B

88.A current of ten ampere is same as---------

A.Ten joule per second

B.Ten watts per second

C.Ten volt per second

D.Ten coulomb per second

Ans:D

89.The power dissipated in a pure capacitor is----

A.Zero

B.Unity

C.Proportional to the applied voltage

D.Proportional to the value of capacitance

Ans:A

90.Which of the following has positive temperature co-efficient?

A.Germanium

B.Aluminium

C.Graphite

D.Rubber

Ans:B

91.I.G.B.T stands for-------

A.Integrated Gate Bidirectional Transistor

B.Integrated Gate Blocky Transistor

C.Integrated Gate Bipolar Transistor

D.Insulated Gate Bipolar Transistor

Ans:C

92.In Fleming’s right hand rule,the fore finger indicates-------

A.The direction of induced EMF

B.The direction of motion of the conductor

C.The direction of induced current

D.The direction of magnetic flux

Ans:D

93.Diode is a ------

A.Multidirectional device

B.Unidirectional device

C.Bidirectional device

D.None of these

Ans:C

94.Earth wire or ground wire is made of------

A.Copper

B.Iron

C.Aluminium

D.Galvanized steel

Ans:D

95.Which tool is used to transfer measurement to the inside caliper?

A.Odd leg caliper

B.Steel rule

C.Genny caliper

D.Divider

Ans:B

96.Chisel used for making rectangular holes in wood is---

A.Firmer Chisel
B.Paring Chisel

C.Mortise Chisel
D.Beavel-Firmer Chisel

Ans:A

97.Name the element  used as impurity to produce N-type semiconductor------

A.Gallium

B.Boron

C.Aluminium

D.Arsenic

Ans:D

98.Which of the following is known as metal rectifier?

A.Gas tube diode

B.Silicon diode

C.Copper oxide rectifier

D.All of the above

Ans:C

99.Type of filter can be used along with a full wave rectifier only is ----------

A.Series inductor filter

B.Pi filter

C.Resistance Capacitance filter

D.Choke input LC filter

Ans:A

100.The difference between peak positive and peak negative values in AC is called----------

A.Effective value

B.Peak to Peak value

C.Maximum value

D.Average value

Ans:B

 

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