SUB ENGINEER,KSEB KERALA PSC SOLVED PAPER 2015

SUB ENGINEER,KSEB

EXAM DATE:26-08-2015
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1.Who among the following is known as Grand Father of Indian Nation

A.Raja Ram Mohan Roy

B.Dayananda Saraswathi*

C.Swami Vivekananda

D.Bala gangadhar Tilak

Ans:B

2.Which Indian river is known as sorrow of Orissa

A.Mahanadi*

B.Narmada

C.Tapti

D.Padma

Ans:A

3.Dr.Babasaheb Ambedkar International Airport is in

A.Ahammadabad

B.Hyderabad

C.Indore

D.Nagpur*

Ans:D

4.Lord Curzon’s Partition of Bengal came to effect on

A.18 October 1905

B.16 October 1905*

C.19 October 1905

D.17 October 1905

Ans:B

5.Sangai is the state animal of

A.Tripura

B.Meghalaya

C.Manipur*

D.Arunachal Pradesh

Ans:C

6.Who was the commissioner of  India Census 2011

A.Vinod Rai

B.C.Chandramouli*

C.Suryaprakash

D.K.T.M. Iqbal

Ans:B

7.Ajantha cave paintings depict scenes from the

A.Ramayana

B.Mahabharatha

C.Rigveda

D.Jataka tales*

Ans:D

8.The Sansad Adarsh Gram Yojana was launched on  the birth anniversary of

A.Sardar Vallabhai Patel

B.Syamaprasad Mukherjee

C.Mahathma Gandhi

D.Jayaprakash Narayan*

Ans:D

9.Who among the following published the daily namely ‘voice of India’

A.W.C.Banarjee

B.Annie Basant

C.Dada Bai Navaroji*

D.Firoz Shah Mehta

Ans:C

10.Name the Indian sports woman selected as the brand ambassador of Telengana state

A.Sania Mirza*

B.Saina Nehwal

C.P.V.Sindhu

D.Koneru Hampi

Ans:A

11.J.C.Daniel award 2014 was awarded to

A.Adoor Gopala Nair

B.M.T.Vasudevan nair*

C.Amal Neerad

D.Ashique Abu

Ans:B

12.The revolt held to wear upper cloth for lower caste women in Kerala is

A.Channar agitation*

B.Guruvayur satyagraha

C.Paliyam stayagraha

D.Malabar riot

Ans:A

13.Which district of Kerala speaks more number of languages?

A.Kozhikode

B.Malappuram

C.Kannur

D.Kasaragod*

Ans:D

14.Which of the following team are behind the Malayali Memorial Movement?

A.K.P.Shankara menon,Dr.Palpu, G.P.Pillai*

B.Chattambi Swamikal,C.V.Ramanpillai,V.T.Bhattathirippad

C.T.K.Madhavan,Dr.Palpu,K.kelappan

D.Mannath Padmanabhan.K.P.Kesava Menon,P.Krishnapillai

Ans:A

15.Which among the following is known as the first college in India?

A.CMS College Kottayam*

B.BCM College Kottayam

C.University College

D.Maharajas College

Ans:A

16.Cochin Stock Exchange came in to being:

A.1959

B.1969

C.1979*

D.1989

Ans:C

17.The largest back water in Kerala is

A.Ashtamudi

B.Chaliyar

C.Vembanad*

D.Punnamada

Ans:C

18.The total number of wildlife sanctuaries in Kerala is

A.12

B.13*

C.14

D.15

Ans:B

19.The gold medalist among  malayalees in Asian Games 2014 is

A.Preeja Sreedharan

B.Dipika Pallikkal

C.O.P.Jaisha

D.Tintu Luka*

Ans:D

20.The co-operative dairy products entrepreneurship MILMA was established in the year------

A.1980*

B.1970

C.1960

D.1950

Ans:A
21.A free electron means?

A.All the electrons in an atom

B.The electrons not belongs to the atom itself

C.Valance electrons which are loosely attached to the nucleus*

D.All the above

Ans:C

22.The speed with which the effect of emf is experienced at all parts of a conductor resulting the flow of current is

A.Velocity of charge

B.Velocity of propagation of electric field*

C.Speed of response

D.None of above

Ans:B

23.When a potential difference is applied to a resistor the heat is produced by

A.Due to the collision of free electrons with the molecules or atoms of the resistor*

B.Power dissipation

C.Speed of response

D.None of above

Ans:A

24.On application of heat on electrolyte it exhibit

A.Positive temp.coefficient

B.No change in its resistance

C.Resistance will increase

D.Negative temp.Coefficient*

Ans:D

25.An operational amplifier is a

A.Dependent source*

B.Independent source

C.Model source

D.None of above

Ans:A

26.A wire of resistance of 6 ohms is bent in the form of a circle,the effective resistance between two points on any diameter is

A.6 Ohm

B.12 Ohm

C.1.5 Ohm*

D.9 Ohm

Ans:C

27.A wire of resistance R Ohm is stretched to double its length,then its resistance become

A.R/4

B.R/2

C.2R

D.4R*

Ans:D

28.Two parallel wires carrying current in opposite direction

A.Attracts each other

B.Repel each other*

C.Cancel each other

D.None of the above

Ans:B

29.A coil has a resistance of 25 ohm and inductance of 5H is connected to a DC source of 50 V is suddenly switched off what will be the value of current at the time of switching off

A.2A*

B.10A

C.1.96A

D.0.5A

Ans:A

30.The inductive reactants of an inductor in a DC circuit is

A.2nfL

B.Zero*

C.wL

D.m

Ans:B

31.In a circuit element if the p.d. is higher than the applied voltage of the source then it will be

A.DC circuit

B.Neither AC nor DC circuit

C.AC Circuit*

D.For both circuite

Ans:C

32.The moving system of an indicating type of electrical instrument is subjected to

A.A deflecting torque

B.Controlling torque

C.Damping torque

D.All the above*

Ans:D

33.The most efficient damping employed in electrical instrument is

A.Air friction

B.Fluid friction

C.Eddy current*

D.None of the above

Ans:C

34.In thermocouple ammeter the heat produced is proportional to

A.Current

B.Square root of current

C.Square of current*

D.Voltage

Ans:C

35.In a cross coil megger,when two currents are passing through them The torque acting up on the coil

A.Opposite direction*

B.Same direction

C.Tan O

D.None of the above

Ans:A

36.The frequency error in induction type ammeter is compensated by

A.Self compensated

B.Not required

C.Non inductive shunt*

D.Inductive shunt

Ans:C

37.An Induction watt meter consist of

A.Series electromagnet

B.Shunt electromagnet

C.Permanent magnet

D.Series and shunt electromagnet*

Ans:D

38.The efficiency of a solar cell is

A.High

B.Very High

C.Low

D.Very low*

Ans:D

39.In core type transformers the number of flux paths are

A.2

B.more than 2

C.half of the path

D.Single*

Ans:D

40.The relation between the excitation current and magnetic flux of  a transformer is

A.Current leads flux*

B.Flux leads the current

C.They are in phase

D.None of the above

Ans:A

41.The equivalent resistance and leakage reactance of a transformer can be found out by

A.Open circuit test

B.Short Circuit test*

C.Polarity test

D.None of the above

Ans:B

42.Hydro generator is the commercial name of

A.Round rotor generator

B.Cylindrical rotors synchronous generator

C.Salient poles synchronous generator*

D.All the above answer

Ans:C

43.An electrical machine with lower efficiency will have

A.Less losses

B.More losses*

C.No losses

D.Low operating cost

Ans:B

44.The effect of armature reaction under the pole shoes can be limited by

A.Inter poles

B.High reluctance pole tips

C.Compensating windings*

D.All the above

Ans:C
45.DC motors are started by using starters because

A.To increase the starting current

B.To reduce the starting current*

C.To increase the speed

D.None of the above

Ans:B

46.Swinburne’s test can not be performed on

A.Shunt motor

B.Compound motor

C.Series motor*

D.All the above

Ans:C

47.Which of the following are used as constant speed drive

A.DC shunt motor*

B.DC series motor

C.DC compound motor

D.All the above

Ans:A

48.No load slip of an induction motor is

A.Large

B.No slip

C.Very small*

D.None of the above

Ans:C

49.The relative advantage of a cage motor over a wound rotor motor of same power is

A.Cage motor is more efficient

B.Cage Motor is less cost

C.Better operating power factor

D.All the above*

Ans:D

50.The maximum torque of an induction motor is proportional to

A.Square of supply voltage*

B.Supply voltage

C.Reciprocal of the square of supply voltage

D.None of the above

Ans:A

51.As synchronous motor runs on

A.AC only

B.DC only

C.Both ac and dc*

D.None of the above

Ans:C

52.If the armature coil of a DC machine is N turns then Number of conductors of any coil side

A.2N

B.N/2

C.N2

D.N*

Ans:D

53.The distance between two consecutive and similar top coil side  is called

A.Back pitch

B.Front pitch

C.Winding pitch*

D.Commutator pitch

Ans:C

54.In lap wound machine the number of brushes used is equal to

A.Number of poles*

B.2

C.Number of turns

D.Number of commutator segments

Ans:A

55.A moving iron instrument can measure

A.AC

B.AC & DC*

C.DC

D.Pulse

Ans:B

56.The emf developed in any physical system act in such a direction to tend to

A.Decrease co energy at constant mmf

B.Decrease the co energy at constant flux

C.Increase the co energy at constant mmf*

D.Increase the co energy at constant flux

Ans:C

57.The factor to be considered while selecting the site of a hydel power plant

A.Quantity of water available

B.head of water

C.Accessibility of the site

D.All the above*

Ans:D

58.Specific speed of a turbine is the speed at which it develop 1 mteric HP under the head of

A.1 metric meter

B.1 meter *

C.1 feet

D.1 cubic meter

Ans:B

59.The active recovery voltage depends on

A.Power factor

B.Armature reaction

C.Circuit condition

D.All the above*

Ans:D

60.The highest current that a circuit breaker is capable of breaking at recovery and re striking voltage is

A.Breaking capacity*

B.Making capacity

C.Recovery current

D.Recovery voltage

Ans:A

61.Circuit breaker intended for rapid auto re closing with rated operating duty  o-m-co in which m represents

A.Making

B.Breaking

C.Dead time*

D.Re closing

Ans:C

62.The heat produced by an electric heating element is according to

A.Ohm’s law

B.Stefan’s law*

C.Snell’s law

D.Faraday’s law

Ans:B

63.Ajax Wyatt furnace make use of a crucible in

A.Horizontal

B.At an angle of 120⁰

C.Vertical*

D.None of the above

Ans:C

64.High frequency capacitance heating method is employed for heating

A.Plastic

B.Wood

C.Dehydration of foods

D.All the above Answer*

Ans:D

65.In carbon arc welding the carbon electrode with respect to work is

A.Negative*

B.Positive

C.As positive or negative

D.Non of the above

Ans:A

66.The filament lamp work at a pf of

A..5

B.1*

C..7

D.0

Ans:B

67.Which lamp has the highest luminous efficiency

A.Filament

B.Neon

C.Mercury vapor

D.Sodium vapor*

Ans:D

68.In illumination space to height ratio is

A.1 to 2*

B.1

C.less than 1

D.None of the above

Ans:A

69.The induction motor cannot run at synchronous speed because if so

A.Rotor emf would be zero

B.Rotor current would be zero

C.Rotor torque would be zero

D.All the above*

Ans:D

70.Semi closed or totally closed slots are used in 30 induction Motor essentially to

A.Reduce magnetizing current*

B.Increase efficiency

C.Improve starting torque

D.Increase magnetizing current

Ans:A

71.In DC machine the armature windings are placed on the rotor for effective.

A.Generation of voltage

B.Development of torque

C.Commutation*

D.Energy conversion

Ans:C

72.The most powerful electromagnet in a normal DC machine operating at full load condition is

A.Field winding*

B.Armature winding

C.Inter pole winding

D.Compensateing winding

Ans:A

73.Which of the following is called as stray flux

A.Armature flux

B.Field flux

C.Leakage flux*

D.None of the above

Ans:C

74.When a coil moves through a time varying flux the induced emf present in the coil is

A.Dynamically induced

B.Statically induced

C.Motional emf

D.Both dynamically and Statically induced*

Ans:D

75.A 30 SCIM stator rewound for 6 poles without any alteration in the rotor will run at a speed

A.<1000 rpm*

B.<1500 rpm

C.<1200 rpm

D.0 rpm

Ans:A

76.A 30 star connected IM takes 20 A from supply .When connected in delta the motor will take a current of

A.20v3

B.20/v3A

C.20A*

D.10A

Ans:C

77.The armature core of a DC machine is laminated to minimize

A.Hysteresis loss

B.Eddy current loss*

C.Mechanical loss

D.Temperature loss

Ans:B

78.Which part of a DC motor has the maximum flux

A.Pole core

B.Interpole

C.Leading pole tip*

D.Trailing pole tip

Ans:C

79.The air blast circuit breaker have best application in system of operating voltage

A.Below 132 KV

B.132 KV to 400 KV*

C.Above 400 KVA

D.None of this

Ans:B

80.The cheapest shielding  material used in Nuclear plant is

A.Concrete*

B.Brick

C.Boron

D.Cadmium

Ans:A

81.Superposition Theorem is essentially based on the concept of

A.Reciprocity

B.linearity*

C.Duality

D.Non linearity

Ans:B

82.Form factor for DC supply voltage is always

A.Zero

B.Unity*

C.Infinity

D.Any value between zero and one

Ans: B

83.In purely resistive circuits

A.Power factor is unity *

B.Power consumed is zero

C.Heat produced is zero

D.Power factor is zero

Ans:A

84.In a series resonant circuit ,the impedance below resonant frequency is

A.Capacitive*

B.Inductive

C.Resistive

D.Dependa on values of circuit components

Ans:A

85.The figure of merit of RLC circuit will increase if

A.R decreases*

B.R increases

C.Voltage increases

D.Voltage decreases

Ans:A

86.In an Intrinsic Semiconductor,Fermi Level represents the energy with probability of its occupation of

A.0%

B.25%

C.50%*

D.100%

Ans:C

87.An Infra Red LED is usually fabricated from

A.Ge

B.Si

C.GaAs

D.GaAsP*

Ans:D

88.Avalanche Photo diodes are preferred over PIN diodes in optical communications systems because of

A.Speed of operation

B.Higher Sensitivity

C.Larger bandwidth

D.Larger power handling capacity*

Ans:D

89.Power Transistors are invariably provided with

A.Heat sink*

B.Metallic casing

C.Soldered connections

D.Fan for heat removal

Ans:A

90.In a JFET,beyond Pinch Off Voltage,as the drain voltage increases,the drain current

A.Decreases

B.Remains constant*

C.Increases

D.May increase or decrease

Ans:B

91.After firing an SCR,if the gate pulse is removed,the SCR current

A.Remains the same*

B.Reduces to zero

C.Rises up

D.Rise a little,then falls to zero

Ans:A

92.One of the characteristic of the Emitter Follower is its

A.Low input resistance

B.Low current gain

C.Low voltage gain*

D.High output resistance

Ans:C

93.Cross over Distortion in Class B push pull amplifier is eliminated by

A.Class C operation

B.Class AB operation*

C.Elimination of output transformer

D.Reducing transistor bias

Ans:B

94.A high Q turned circuit in a turned amplifier permits it to have high

A.Selectivity*

B.Fidelity

C.Sensitivity

D.Frequency range

Ans:A

95.Which of the following Op-Amp system is non linear?

A.Current to Voltage Converter

B.Logarithmic Amplifier*

C.Active Filter

D.Delay Equalizer

Ans:B

96.At microwave frequencies,the size of the antenna becomes

A.Very large

B.Large

C.Small

D.Very small*

Ans:D

97.In a single phase full converter,the number of SCRs conducting during overlap is

A.1

B.2

C.3

D.4*

Ans:D

98.A sinusoidal voltage of amplitude 1 kv is amplitude modulated by another sinusoidal voltage to produce 30% modulation.The ampltitude of each sideband term is

A.300 volts

B.150 volts*

C.500 volts

D.250 volts

Ans:B

99.An interrupt in which the external device supplies its address as well as the interrupt request is known as

A.Vectored interrupt*

B.Maskable interrupt

C.Non-maskable interrupt

D.Designated interrupt

Ans:A

100.Logic 1 in negative logic system is represented by

A.Zero level

B.Lower voltage level*

C.Higher voltage level

D.Negative voltage

Ans:B