Exam Details

Subject
Paper
Exam / Course
Department
Organization Kerala Public Service Commission
Position operator
Exam Date 24, June, 2015
City, State kerala,


Question Paper

119/2015

Maximum: 100 mark's Time: 1 hour and 15 minutes

1. The location of Thermostat valve in cooling system is


engine inlet from radiator


at engine outlet to radiator


(C)between radiator and water pump



between water pump and engine


2. The viscosity of multigrade oil is determined at




(B)100°F





(D)100°C


3. The rotor type oil pump has:

inner rotor with a lobe-less than the outer rotor


outer rotor with a lobe less than the inner rotor


inner rotor with a lobe more than the outer rotor


(D)two rotor with same number of lobes


4. Theoretically the inlet valve closes at BDC during suction stroke. Practically ,the inlet valve remains open a few more degrees of crank shaft rotation after BDC. The purpose of this is to

Reducing frictional power


Increase valve overlapping period


Reduce compression pressure


Increase volumetric efficiency


5. Catalytic converter is associated with:

automatic transmission system


engine intake system


emission control system


vehicle braking system

6. Which of the following is not a part of primary circuit of ignition system?

Battery


CB points


Ignition coils thick wire winding


Spark plug


7. Insufficient clutch free pedal play causes:


Difficulty in gear shifting


Dragging of clutch


Clutch slipping


Clutch spinning



8. Double helical gears are known as

Herring bone gear


Spur gear


Bevel gear


Spiral gear


9. Which of the following device can bring two gears rotating Oat different speeds to the same speed for smooth gear shifting?


(A)Throw out bearing


(B)Synchronizer


(C)Idler gear


(D)Inter locking mechanism


10. The type of lubrication system suitable for racing cars is


(A)wet sump lubrication system


splash lubrication system


(C)dry sump lubrication system


petrol lubrication system


11. If the lock to lock steering wheel rotation is four turns and the front wheel movement is 60 degrees, what is the steering ratio?

15:1


18:1


24:1


21:1


12. The effect of carbon deposits on the cylinder head inside the combustion chamber is

(A)increased delay period


(B)increased fuel, economy


(C)reduced compression ratio and pre-ignition


(D)increased compression ratio and pre-ignition


13. Which among the following maintains a constant level of petrol in float chamber?


(A)Petrol main jet


Float and needle valve


(C)Float and throttle valve


Choke valve


14. The time duration, given in degrees of distributor rotation that the CB points remain closed between successive opening is

(A)Dwell


Camber angle


(C)Included angle


Overlap period


15. The engine power transfer mechanism that combines a transmission assembly and differential assembly in a single unit is known as


(A)multi axle mechanism


free wheel mechanism


(C)transfer case


(D)transaxle mechanism


16. Which among the following is not a part of suspension system?


(A)trailing link


tie rod


(C)torsion bar


anti roll bar


17. The stub axle is connected to the front main axle beam by means of:

(A)Shackle pin


Wrist pin


(C)King pin


Tie rod


18. The distance between the centre of front wheel at straight ahead position and the centre of rear wheel is known as


(A)Wheel track


Thrust line of wheels


(C)Wheel base


Toe-in of the wheels


19. "External pressure applied upon a confined fluid is transmitted uniformly in all directions". This law is:


(A)Pascal's law.


(B)Boyles law


(C)Charl's law


(D)Avagadro's law


20. Which of the following is not a possible cause of engine overheating?


(A)Brake binding


Fan belt slipping


(C)Oil with less viscosity


Over inflated tyre


21. The narrow space in the cylindrical air horn of the Carburettor through which the air passes is:

(A)Float chamber


Ventuary


(C)Mixing chamber


None of the above


22. Major constituent of CNG (Compressed Natural Gas) is

(A)Butane


Propane


(C)Ethane


Methane


23. The component of air brake system which protect reservoir from over loading is

(A)Brake valve


Unloader valve


(C)Levelling valve


Brake chamber


24. The larger gear wheel used in the final drive is called:

(A)Crown wheel


Sun gear


(C)Pinion wheel


Planet gear



25. The formation of air pockets inside the torque converter due to low pressure is known as


(A)Air bleeding


Cavitation


(C)Free wheeling


None of the above


26. Which among the following factor which does not affect engine compression ratio?


(A)Thickness of cylinder head gasket


Carburettor flooding


(C)Baffles on piston Particulate deposits inside cylinder


27. The process commonly used for the manufacturing of cylinder liners is


(A)forging


(B)centrifugal casting


(C)plaster mould casting


(D)moulding


28. The material used for piston ring is

(A)Cast Iron with Silicon


(B)Forged steel


(C)Stainless steel


(D)Alluminium alloy


29. The component which transmit reciprocating motion of valve lifter to rocker arm:

(A)valve guide


(B)tappet


(C)push rod


(D)rocker shaft


30. Valve lapping is the process of grinding:


(A)valve seat and margin


valve seat and stem


(C)valve seat and guide


(D)valve seat and face


31. The warpage of machined faces of cylinder block and cylinder head can be checked with:


(A)Dial guage


(B)Telescopic guage


(C)Straight edge


Trammel


32. The test for finding the chemical conditions of the positive and negative battery plates is


(A)Open volt test


High discharge test


(C)Specific gravity test


Cadmium test


33. The leaf springs are connected to axle beam by means of:


(A)U-bolt


(B)Shackle


(C)Centre bolt


(D)Shackle pin



34. The angle between king pin centre line and vertical in the plane of wheel is called:

(A)Steering axis inclination


King pin inclination


(C)Castor


Camber


35. Wear on tyre is more on one side is due to


(A)Incorrect camber angle


Low tyre pressure


(C)High tyre pressure


Sudden acceleration


36. Useful power obtained at the engine fly wheel is called:


(A)Indicated power


(B)Frictional power


(C)Mechanical advantage


(D)Brake power


37. The nozzle valve in the injector unit is lifted off from it's seat by


(A)Spring pressure


(B)High pressure diesel


(C)Spindle pressure


(D)Compression pressure


38. FIP is driven by

(A)Crank shaft gear


(B)Distributor shaft


(C)Cam shaft screw gear


(D)Cam shaft gear


39. Which among the following tool is suitable for inserting piston with rings into the engine cylinder?


(A)Screw driver


Piston ring expander


(C)Piston ring compressor


All of the above


40. The boiling point of the coolent in cooling system is raised by

(A)Pressure cap


Pump casing


(C)Thermostat valve


Radiator


41. Wheat stone bridge works on the principle of:

(A)Ohms Law


(B)Kirchoff's Laws


(C)Joules Law


(D)Faraday's Law


42. In DC machines for more voltage usually winding is done in


Lap winding


Double Layer winding


Wave winding


Concentric winding


43. The curve representing ohm's law is


parabola


(B)Line fUnctions


(C)Linear


A hyperbola


44. The capacity of a Lead acid cell is usually expressed in

(A)Ampere hour


Voltage


(C)Watts


Ampere


45. The output voltage of ignition coil in an automobile is given to


(A)Battery


(B)Distributer


(C)Headlight


(D)Spark plug


46. When power factor is unity, the phase angle between voltage and current?

45°


90°


60°





47. In a water turbine alternator the speed will be


(A)Low


(B)Medium


(C)High


(D)Very high


48. The speed of a DC series motor is dangerously high at no load because:

(A)Back emf is high


(B)Armature voltage is low


(C)Flux is very low


Armature current is high


49. Which caliper is used for scribing line along curved edges?


(A)Inside caliper


Outside caliper


(C)Spring joint caliper


Jenny caliper


50. This is not the reason for no light from the bulb in an automobile lighting system:


(A)Overcharged battery


Defective light switch


(C)Fused bulb


Blown fuse


51. If a contactor is in the open position, the armature is at its greatest distance from the core and the impedance of the coil is

Zero


Low


High


Half the normal value


52. For a given VA rating cross-section area of core will be less ifthe following metal is used:

(A)Dynamo sheet


(B)High alloy sheet


(C)Normal iron sheet


Stalloy sheet


53. Which of the following is not used for etching?


(A)Ferric Chloride


Cupric Chloride


(C)Alkaline Ammonia


Carbon Tetra Chloride


54. An AC or DC electric motor can be used to automatically:

(A)Charge the spring


release the spring


discharge the spring


To load the circuit breaker


55. Air pollution is the least in this type of energy converter:

(A)Bio gas energy converters


(B)Diesel generating sets


(C)Solar cell energy converter


(D)Thermal electric generating stations


56. If a new vehicle is found that the negative terminal of the battery is earthed. This indicates the use of the following:

Generator


Generator


(C)Ignition coil


(D)Inverter


57. Sweep of ceiling fan refers to

(A)Radius of circle formed by its rotation


(B)Double the length of the blade


(C)The distance from the centre of motor to tip of blade


(D)Double the distance from centre of motor to tip of blade


58. In electrical accessories the use of silver is at

(A)Contact points


(B)Switch terminal


(C)Lamp terminal


Wire


59. The instrument which can be classified as an absolute instrument is

(A)Milli ammeter


Micro ammeter


(C)Galvanometer


Tangent galvanometer




60. The rating of power factor improvement capacitor is in


(A)Micro farads


(B)Farads


(C)KVAR


(D)KVA


61. A transistor is operated device.


(A)Current


(B)Voltage


(C)Both voltage and current


(D)None of the above


62. DC supply is essential for the operation of:

(A)Mercury vapour lamp


(B)Arc lamp


(C)Sodium vapour lamp


(D)Fluorescent lamp


63. Chatter in an AC relay magnet can be eliminated by using:

(A)Laminator


(B)Shading coil


shaped magnetic core


(D)Matching fixed and movable magnetic limbs


64. In this wiring, two lamps should be switched at a time:

(A)Tunnel wiring


(B)Hostel wiring


(C)Godown wiring


Corridor wiring


65. For alignment of the job in a lathe machine, we may require small movements (small angular movements) of the chuck. This could be achieved by using a controller with:


(A)Dynamic brake push-button


(B)Regenerative brake push-button


(C)Delay push-button


(D)Jogging push-button


66. Degaussing is the process of:

(A)Removing gases from a material


(B)Removing impurities from a magnetic material·


(C)Demagnetizing a metallic part


(D)Demagnetizing a magnet


67. HRC fuse is superior protective device as compared to circuit breaker and relay as far as

(A)Electromagnetic stresses are concerned


(B)Thermal stresses are concerned


(C)Both electromagnetic and thermal stresses are concerned


(D)None of the above


68. Which of the following material has a negative temperature co-efficient of resistance?

(A)Carbon


Brass


(C)Copper


Aluminium


69. By inserting reactance in the rotor circuit:

(A)Reduces starting torque as well as maximum torque


(B)Increases starting torque but maximum torque remains unchanged


(C)Increases starting torque as well as maximum torque


(D)Increases starting torque but maximum torque reduces


70. In three phase power measurement by two wattmeter method, reading of one wattmeter found negative. Then the P.F of the load is

(A)0.4 lagging


0.5 lagging


(C)0.8 lagging


Unity


71. Epoxy cable joint is used where

(A)H.T cable joints


Heating of the cable is not permitted


(C)Temporary joint


joints only


72. At the suction stroke 10 a reciprocating pump, the valve closes and valve opens.

Non return


(B)Non return, Foot


(C)Delivery, Suction


(D)Suction, Delivery


73. Voltage stabilizers having auto transformer in servo stabilizer is of


(A)Core type


(B)Shell type


(C)Distributed core type


Toroidal type


74. The ripple factor of a capacitor filter may be decreased by

(A)Decreasing RL


(B)Increasing RL


(C)Increasing C


(D)Increasing both RL and C


75. On doubling the supply frequency, the eddy current will


(A)Become half of their former value


(B)Become four times of their former value


(C)Remains unaffected


(D)Become eight times of their former value


76. If three persons take reading in horizontally placed meter at the same instant, whose reading is correct?

(A)The reading taken by the left hand side person


(B)The reading taken by the middle person


(C)The reading taken by the right hand side person


(D)The reading taken by three persons simultaneously


77. If the end of the shaft of a grinder motor turn blue it is an indication of:

(A)Over heating


Scoring


(C)Freezing


Burring


78. In black cotton soil, where water level is encountered within the pole pit, it is better to use:

(A)Concrete foundation


(B)Earthen foundation


(C)Embankment only


(D)Mass concrete and embankment


79. For testing insulation resistance the most suited electrical supply is

(A)Alternating current


Direct current


(C)Pulsating current


Oscillating current


80. When an electric train moves down a hill, the DC series motor then act as

shunt motor


shunt generator


series motor


series generator


81. On which river bank is Goa located?

(A)Ganga


(B)Mandovi


(C)Gomati


(D)Sabarmati


82. In which state is "Hawa Mahal (palace of breeze)" located?

(A)Rajasthan


(B)Karnataka


(C)Andhra Pradesh


Uttar Pradesh


83. The inception of the rebellion of 1857 was in

Meerut


Ambala


Barrackpore


Delhi

84. Gandhiji started Satyagraha in 1919 to protest against the:

Salt Law


Act of 1909


Jalianwala Bagh Massacre


Rowlatt Act

85. The concept of five years plan in India was introduced by


Jawaharlal Nehru


Indira Gandhi


Lord Mountbatten


Lal Bahadur Shastri


86. The type of soil which is known locally as "Regur" soil and suitable for cotton cultivation:


Alluvial soil


Black soil


Red soil


Laterite soil

87. Where was the first session of Indian National Congress held at

Kolkatta


Lahore


Mumbai


Delhi

88. Where is the lotus temple located?

Punjab


Mumbai


Lucknow


Delhi

89. The climate of India is

Monsoonal


Equitorial


Continental


Mediterranean

90. Which is the largest state in India?


Uttar Pradesh


Rajasthan


Madhya Pradesh


Bihar


91. A Who is known as "Kerala Valmiki"?


Vallathol Narayana Menon


M.T. Vasudevan Nair


Thunjath Ezhuthachan


Kumaran Aashan



92. Where is Edakkal caves located?


(A)Palakkad


(B)Wayanad


(C)Kazargode


(D)Kozhikode


93. Who is the founder of Sadhujana Paripalana Yogam?

(A)Sree Narayana guru


(B)EMS Namboothiripadu


(C)Ayyankali


(D)Chattampi Swami


94. The number of west flowing rivers in Kerala













95. Smallest Taluk in Kerala

(A)Kochi


(B)Eranad


(C)Ottapalam


(D)Varkala


96. Winch is the largest fresh water lake in Kerala

(A)Astamudi


(B)Vembanad


(C)Wular


(D)Kolleru


97. What is the total cost length of Kerala?


(A)290


(B)490


(C)590


(D)440


98. Which among the following districts of Kerala receives highest rainfall?


(A)Kozhikode


(B)Ernakulam


(C)Palakkad


(D)Idukki


99. which type of forest has maximum area coverage in Kerala?


(A)Tropical moist deciduous


(B)Tropical wet evergreen


(C)Tropical dry deciduous


(D)Mountains sub tropical


100. How many legislative assemblies are there in Kerala?

120


141


114


135


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