112/2015


Maximum: 100 marks Time: 1 hour and 15 minutes
1. The safe and proper way of removing the existing software from the computer is

removing disabling


deleting uninstalling


2. The type code printed on the zener is BZC9V1, where indicates:

germanIUm silicon


carbon boron


3. In MS-Word file, the short cut key used to save the document is:

Ctrl+A Ctrl+S


Ctrl+V Ctrl+X


4. The number of diodes used for a centre tapped full wave rectifier is
1 2

5. Expansion of SPDT is

Single Phase Double Throw Single Pole Double Throw


Single Phase Dual Throw Single Pole Dual Throw


6. Open circuit test is conducted on a transformer to determine:

eddy current loss copper loss


hysteresis loss core loss


7. One Pico farad is equal to

10-6 farad 10-9 farad


10-12 farad 10-15 farad


8. :The of complete cycles produced in one second is called:

frequency period


amplitude peak value


A3
[p.T.a.)
9. The function of tweezer is to

grip and hold the cylindrical objects


cut small diameter wires and cables


hold light weight and very small components and wires


remove the sheath and insulation from cables and boards


10. 1 joule

1Nm 1Nm'


1 1 kgm sec'


11. The melting point of aluminium is

810°C


560°C



12. Specific gravity of electrolyte is measured by

lactometer pyrometer


hydrometer galvanometer


13. Find the square root of 15376

414 124


214 324


14. Which type of drawing sheet having biggest area?
A3 A2
Al AO
15. What is the potential energy in a body, mass 5 kg on top of a pole 20 m high?

100 j 980 j


1000 j 9800 j


16. Which is the example ofmandatory sign?

Risk of electric shock Wear safety belt


Smoking prohibited All of the above


17. The unit of quantity of electricity is:

Watt hour Coulomb


Ampere Volt


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18. What is the value of medium resistance based on its ohmic values?

Above 1 ohm upto 1000 ohms Above 1 ohm upto 100 K ohms


Above 100 K ohms Below one ohm


19. Which tool is used to measure the size of the conductor?

Bevel gauge Vernier caliper


Standard wire gauge Depth gauge


20. In which classification of accessories, the switch will belong?

Holding Safety


General Controlling


21. What is the name of defect occurred in a cell, due to the presence of impurities on the zinc plate?

Polarisation Sulphation


Buckling Local action


22. The mass of a substance liberated from an electrolyte by one coulomb of electricity is termed as:

electrochemical equivalent quantity of electricity


electric charge electrochemical expression


23. What is the method of charging the battery at very low rate?

Rectifier method Constant current method


Trickle charge method Constant voltage method


24. The distance between two adjacent teeth of hacksaw blades are called:
pitch of the blades specification of the blades size of the blades number ofthe blades
25. Which substance is diamagnetic?

Manganese Nickel


Bismuth Cobalt


26. Tesla is the unit of

flux density flux


reluctance magnetic field strength


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27. Which type of DC generator is used for welding generator sets?

Shunt generator


Series generator


Cumulative compound generator


Differential compound generator


28. How many parallel paths in simplex wave winding of a D.C. generator having 8 poles?
8 6

29. As per BIS the series tied winding terminals must be marked as: W B}B2
D}D2 F2
30. Which law/rule states that the magnitude of the induced e.mJ. is directly proportional to the rate of change of flux linkage?

Lenz's law


Faraday:s law of electromagnetic induction


Fleming's right hand rule


Faraday's law of electrolysis


31. The table fan is not oscillating. The cause may be

the loose guards


the defective speed control switch


the spur gear with broken teeth


the blades are out of balance


32. Which one has negative temperature co-efficient of resistance?

Copper Nichrome


Aluminium Mica


33. Which type of resistors are called as thermistors?

PTC resistors Varistors


LDR NTC resistors


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34. Which one is NOT an application of electromagnet?

Calling bell Protective relays


Electric iron DOL starter


35. The magnetic term analogous to electrical term current is

reluctance flux.


flux density m.mJ.


36. The fire extinguisher not used for electric fire

Foam type Halon type


Carbon tetrachloride Dry powder type


37. Six carbon-zinc cells in series have an output of:
6V 9V
12V 7.5V
38. A 100 Ah capacity battery should deliver a current of 10 A for approximately

12 p3) 10


100 25


39. A fluorescent tube may burn out ifthe choke coil is

open circuited grounded •


short circuited connected to the neutral line


40. The starting torque of a single phase induction motor is

low high


very low zero


41. While testing a capacitor with a multimeter, the needle shows zero position indicating the capacitor is

in good condition open circuited


short circuited leaky


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42. The direction of rotation of a capacitor-start motor can be reversed by

reversing the supply terminal connections


reversing the connection of the auxiliary winding


reversing the connection of both the main and auxiliary winding


reversing the connection of either the main or the auxiliary winding


43. What is the synchronous speed of a six-pole induction motor running on power at 60 Hz supply?

1200 rpm 1000rpm


7200 rpm 6000 rpm


44. The output of an alternator is in

HP KVA


KW BHP


45. The other name of field current in an alternator is

load current armature current


exciting current induced current


46. A 6-pole, 1200 rpm alternator will generate emf at the frequency of:

50Hz 60Hz


40Hz 30Hz


47. The voltage induced in the armature of an alternator will be:

pulsating DC oscillating


DC AC


48. In Scot connection, the teaser transformer has a tapping of transformer.

86% of main 56% of main


50% of secondary 58% of secondary


49. The common method of cooling a power transformer is

air cooling air blast cooling


oil cooling with air blast oil cooling with water forced


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50. Three single phase transformers, each with 10 KVA rating connected in delta. If one of the transformer is damaged and taken out, the output of the system will be 20 KVA 17.4 KVA 8.66 KVA 10 KVA
51. Transformer oil is used to cool lubricate and cool lubricate insulate and cool
52. Which one of the following transformer is largest in size? 2 KVA, 600 Hz 2 KVA, 400 Hz 2 KVA, 200 Hz 2 KVA, 50 Hz
53. Power transformers are designed to have maximum efficiency at near full load no load half load more than full load
A transformer'has maximum efficiency at an iron loss of 400 watts. Its copper loss will be 200 W 300 W 400 W 800 W
55. When a 440/220 V transformer is connected to a 440 V DC supply: the output will be zero volt the output will be 220 V the transformer may burn the output will be less than 220 V
56. In a transformer, the primary and secondary induced voltages are: 900 Oljt of phase in phase 1800 out of phase in any phase difference
57. is the most suitable material for the core of a transformer. Cold rolledgrain oriented steel Hot rolled grain oriented steel Cast steel Carbon steel
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58. The current drawn by a 240 DC motor of armature resistance 0.5 ohm and back emf of 220 V will be:
20A 30A
10 A 40A
59. For wide and very sensitive speed control, the usual method is

Field control Armature control


Voltage control Ward-Leonard control


60. The speed of a DC motor can be controlled by varying:

the resistance of the armature circuit its flux per pole


the voltage all of the above


'61. A compound motor has:

two fields .three fields


one field four fields


62. A 4-point starter is essential for a

compound motor with speed control above normal


shunt motor with speed control below normal


series motor with speed control above normal


compound motor with speed control below normal


63. The power output of any electrical motor is taken from the:

shaft terminal box


armature brushes


64. In DC motor three-pomt starter the hold ON coil is connected:
in series to field coil in series to armature in parallel with field coil in parallel with armature
65. How many parallel paths are formed in DC motor four point starter?

One Two


Three Four


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66. The inter poles are connected in

series with the armature parallel with the armature


series with the field parallel with the field


67. The standard length of PVC wiring conduit available in the market is

3 meters 2.5 meters


2 meters 3.5 meters


68. Iffive numbers of lamps to be installed in godown wiring, we require:

one SPT and five two-way switches one SPT and six two-way switches


two SPT and four two-way switches one SPT and four two-way switches


69. The minimum length of pipe electrode used for earthing should not be less than:

3m 3.5m


2.5m 4m


70. According to IE rules, the leakage current in an installation should not exceed one part of the maximum current in the installation.

5000 500


100 50000


71. An ON-LOAD tap changer is provided with:

power transformer distribution transformer


instrument transformer isolation transformer


72. The repeated closure of the circuit to start a motor from rest, producing small movements is called:

starting jolting


]oggmg flashing


73. The number of contactors used in a semi-automatic star-delta starter is


74. The edges of the slot liner should be folded on either end to prevent them from sliding in the slots is called:

cuffing wedging


packing over hanging


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75. The periphery of the armature divided by the number of poles of the machine is called:

front pitch pole pitch


back pitch commutator pitch


76. An electromagnetic device used to detect and locate grounded, shorted and open coils in an armature:

external growler internal growler


megger mulimeter


77. Pick up the odd one out:

agitator type fuzzy logic type


air power wash type saucepan type


78. The amount of emergent light downward is 60 to 90%. The type of lighting system is

direct semi indirect


semi direct indirect


79. Coupling gap reading can be taken with the help coupling and aligning MG sets.

spirit level feeler gauge


steel rule shims


80. As per Rule 51, a clear space of not less than 91.44 cm in width shall be provided:

behind the switch board above the switch board


below the switch board in front of the switch board


81. The highest peak of Himalaya:

Gangothri Mount Everest


Anamudi Dhaulagiri


82. Which state receive the heaviest rainfall in India?

Megalaya Kerala


Orissa Gujarat


83. What is the longest river in India?

Kaveri Ganga


Narmada Palaru


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84. The greatest mountain range come between northern and southern India:

Aravalli Satpura


Vindhya Ponmudi


85. In the Sangam period the hilly regions were called as

Mullai Kurinji


Marutham Palai


86. The first martyr of 1857 revolt:

Nana Sahib Mangal Pande


Rani Lakshmi Bai Tantya Tope


87. The founder of the Indian National Congress was:

W.C. Banarjee Tilak


Gandbiji A.O. Hume


88. Importance of the year 1942 is

Civil Disobedience Movement Non Co-operation Movement


Quit India Movement None of these


89. was responsible for the partition of Bengal.

Lord Wavell Lord Curzon


Lord Rippon Lord Mountbatten


90. The famous Edakkal cave is situated in-----district.

Wayanad Idukki


Pathanamthitta Ala'ppuzha


91. Kallumala agitation was led by

Ayya Vaikundar Ayyankali


Thycaud Ayya Sree Narayana Guru



92. Ezhava Memorial was submitted under the leadership of: Dr. Palpu Sree Narayana Guru V.T. Bhattatbirippad ThycaudAyya
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93. Who was the author of the famous work "Jathikummi"?

Kumaranasan C.P. Ramaswamy


Swami Sivayogi Pandit Karuppan


94. considered as the father of Muslim Renaissance in Kerala.

Rahmath Ali Vakkom Moulavi


Abdul Kadhar Mohammed Iqbal


95. Kuriakose Elias Chavara was died on

January 1871 February 1871


November 1871 3ro December 1871


96. Which political party won the 2015 Delhi Assembly Election?

CPM AAP


INC BJP


97. Who got Vayalar Award of 2014?

K.R. Chithra Beena Paul


Sara Joseph K.R. Meera


98. Which of the following is the Multilateral Bank operated by BRICS states?

Development Credit Bank National Development Bank


New Development Bank Asian Development Bank


99. Who was the Chief Guest of 2015 Republic Celebration in India?

Yingluck Shinawatra Barack Obama


Bill Clindon Shinzo Abe


100. The first Malayali to win Oscar Award was:

Resul Pookutty Manju Wariyar


A.R. Rahman Mamooty


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