TRADESMAN-DIESEL MECHANIC 17-01-2017

TRADESMAN-DIESEL MECHANIC

TECHNICAL EDUCATION DEPARTMENT

EXAM DATE:17-01-2017
PDF FILE DOWNLOAD     DOC FILE DOWNLOAD

1.Super charging in a diesel engine is also called:

A.Scavenging

B.Boosting

C.Cleaning

D.Silencing

Ans:B

2.Thermostat valve strate to open above:

A.20%

B.50%

C.80%

D.90%

Ans:C

3.The oil pan in an engine is made of:

A.Steel or aluminium

B.Steel or cast iron

C.Cast iron or brass

D.Cast iron or zinc

Ans:A

4.The rate of doing work is called:

A.Energy

B.Power

C.Torque

D.Force

Ans:B

5.Which one of  following is an insulator:

A.Aluminium

B.Copper

C.Iron

D.Mica

Ans:D

6.One Newton is equal to:

A.10⁹dyne

B.10⁵dyne

C.10³dyne

D.10⁷dyne

Ans:B

7.Which part of the piston is subjected two high pressure and temperature?

A.Skirt

B.Ring section

C.Hand

D.Crown

Ans:D

8.Venturi unit and diaphragm unit are the to main parts of the following Governors:
A.Pneumatic

B.Hydroic

C.Mechanical

D.Servo

Ans:A

9.The stroke of an engine is:

A.Length of the connecting rod

B.Distance between T.D.C and B.D.C.

C.Volume of the cylinder

D.Inside diameter of the cylinder

Ans:B

10.The compression ratio in a diesel engine can be as high as:

A.18:1

B.12:1

C.14:1

D.25:1

Ans:D

11.A 12 V lead acid battery consist of:

A.Three cells in series

B.Six cells in series

C.Three cells in parallel

D.Six cells in parallel

Ans:B

12.The diesel engine usually emits excessive  smoke during:

A.Starting

B.Idling

C.Accleration

D.Decelerating

Ans:C

13.The thermostat valve starts to open at about:

A.20⁰C

B.50⁰C

C.90⁰C

D.80⁰C

Ans:D

14.The number of ignition coils a distributorless ignition system for a six cylinder engine is

A.2

B.3

C.6

D.12

Ans:C

15.Oil bath air cleaner is serviced:

A.After every 2000 km

B.After every 3000 km

C.After every 4000 km

D.After every 5000 km

Ans:D

16.Radiator core should be cleaned by:

A.Out side the fan side

B.Reverse flushing

C.Top to bottom of core

D.Top hose to bottom house

Ans:B

17.The minimum graduation of an engineer’s steel rule is:

A.0.25 mm

B.0.50 mm

C.0.75 mm

D.1.00 mm

Ans:B

18.The Instrument used to measure cylinder bore diameter is:

A.Out side micrometer

B.Vernier caliper

C.Telescopic gauge

D.Bore dial gauge

Ans:D

19.C.B.point are generally made of:

A.Tungsten

B.Steel

C.Copper

D.Plastic

Ans:A

20.Aluminium cylinder block requires:

A.Aluminium liners

B.Brass liners

C.Cost iron liners

D.No liners

Ans:B

21.In a vernier micrometer,vernier scale is gradated on:

A.Frame

B.Spindle

C.Barrel

D.Thimble

Ans:C

22.It has to withstand high pressure and temperature piston is made out of”

A.Copper

B.Cast iron

C.Steel

D.Aluminium alloy

Ans:D

23.The crankshaft transmit torque directly to:

A.Flywheel

B.Propeller shaft

C.Rod wheel

D.Differential

Ans:A

24.Exhaust valve fall angle is generally:

A.30⁰

B.45⁰

C.60⁰

D.75⁰

Ans:B

25.Which one of the following is not unit of pressure?

A.Peal

B.Torr

C.Newton

D.Bar

Ans:C

26.The unit capacitance is:

A.Ohm

B.Siemems

C.Farrad

D.Mho

Ans:B

27.One joule is equal to:

A.107 ergs

B.103 ergs

C.109 ergs

D.105 ergs

Ans:A

28.Bench vice is normally made of:

A.Cast iron

B.Cast steel

C.Mild steel

D.High speed steel

Ans:A

29.Deposit of carbon in the exhaust system:

A.Will reduce back pressure

B.Will have no effect on back pressure

C.Will increase back pressure

D.Will result in pressure

Ans:C

30.The boiling point of the coolant is increased in the cooling system which of the following makes it possible to increase the boiling point:

A.Pressure radiator cap

B.Vacuum valve

C.Water jackets

D.Radiator core

Ans:A

31.A governor,which provided perfect speed regulation with zero speed drop is called:

A.Isobar governor

B.Isotherm governor

C.Isochronous governor

D.Isocline governor

Ans:D

32.Much of the heat in the exhaust gases may be recovered by the use of:

A.Heat exchanged

B.Muffler

C.Manifold

D.Tail pipe

Ans:A

33.A noise produced in the cylinder of a diesel engine during combustion usually when the fuel oil has a low ignition quality is called:

A.Fuel burst

B.Fuel explosion

C.Fuel knock

D.Fuel thrust

Ans:C

34.In starting of diesel engine by electric starting,what is used to supply power to the power motor?

A.Dynamo

B.Generator

C.Rectifier

D.Battery

Ans:D

35.What is the pitch of a fine hacksaw blade?

A.1.8 mm

B.1.0 mm

C.0.8 mm

D.1.4 mm

Ans:C

36.The resistance  in an open circuit is:

A.Zero

B.Very low

C.Very high

D.Infinite

Ans:D

37.The fuel injection timing in  a distributor type pump is controlled by:

A.Changing plunger stroke

B.Changing speed of rotor

C.Rotating the cam ring

D.Changing the number of cams on the ring

Ans:C

38.The special feature of pintle type nozzle is that it:

A.Has a single hole

B.Has an extended stem to form a pin

C.It is suitable for cold weather

D.Is designed for easy starting

Ans:B

39.Top portion of liner does not come in contact with piston.Ring forms ridge in the cylinder bore.The tool used to remove ridge.

A.Milling cutter

B.End mill cutter

C.Ridge cutter

D.Seat cutter

Ans:D

40.Identify the type of floating of gudgeon pin proved with circlip:

A.Semifloating

B.Full-floating

C.Three-quarter floating

D.Non-floating type

Ans:D

41.The most important characteristic of a lubricating oil is its:

A.Viscosity

B.Physical stability

C.Chemical stability

D.Resistance against corrosion

Ans:A

42.In the phasing operation the time the fuel injection in each cylinder in relation to the pump camshaft.Which one of the following is to be adjusted?

A.Control sleeve

B.Tappets

C.Toothed quadrant

D.Control rack

Ans:D

43.A four cylinder engine has a capacity of 2.4 litres.The swept volume of one cylinder is:

A.400 cm3

B.600 cm3

C.1200 cm3

D.2400 cm3

Ans:B

44.What is likely to happen if the thermostat valve remains closed?

A.Over heating of engine

B.Rough idling

C.Slow warming up of engine

D.Difficulty in starting of engine

Ans:A
45.A Rough file is used:

A.On non irregular jobs

B.To reduce the metal rapidly

C.On wood

D.If smooth file is not suitable

Ans:B

46.In order to ensure effective cooling of each cylinder of the engine is surrounded by:

A.Radiator

B.Water tube

C.Water ring

D.Water jacket

Ans:D

47.The main purpose of lead acid battery is to store electrical in the form of:

A.Kinetic energy

B.Potential energy

C.Chemical energy

D.Mechanical energy

Ans:C

48.A grinding wheel is marked:51A46 L5V-23.Here what does 5 denote?

A.Kind of bond

B.Structure

C.Kind of abrasive

D.Grain size

Ans:B

49.India’s position in terms of its size is:

A.3

B.4

C.6

D.7

Ans:D

50.Who designed our National Flag?

A.Pingali Vengayya

B.Udaya Kumar

C.Rabindranath Tagore

D.Robert Bristo

Ans:A
51.Which Political leader is known as Lion of Punjab?

A.Bhagat Singh

B.Sukhdev Singh

C.Lala Lajpath Rai

D.Raj Guru

Ans:C

52.Nagarjuna Sagar Project is situated across which river?

A.Godavari

B.Krishna

C.Kaveri

D.Thungabhadra

Ans:B

53.Largest island among  Lakshadweep island group:

A.Minicoy

B.Kavarathi

C.Androth

D.Kalpeni

Ans:A

54.In which year was ICDS project launched in India?

A.1970

B.1973

C.1975

D.1980

Ans:C

55.Who was Political Guru of Mahatma Gandhi?

A.S.N.Banerji

B.Gopala Krishna Gokhale

C.M.G.Ranade

D.Dadabhai Naoroji

Ans:B

56.In which congress session was Poornaswaraj resolution passed?

A.Mumbai

B.Tripura

C.Lucknow

D.Lahore

Ans:D

57.District in which the Kayyur Struggle 1941 took place

A.Kannur

B.Kasarkode

C.Kozhikode

D.Wayanad

Ans:B

58.Which is the largest beach in Kerala?

A.Muzhuppilangad

B.Cherai

C.Sankumugham

D.Payyambalam

Ans:A

59.Which is the birth place of social reformer Vagbadanandha?

A.Kollangode

B.Kannanmoola

C.Patyam

D.Thalassery

Ans:C

60.Name the Social reformer who formed the Cultural Organisation ‘Vidyaposhini’?

A.Pandit Karuppan

B.Sahodaran Ayyappan

C.Velukutty Arayan

D.Arattupuzha Velayudha Panikkar

Ans:B

61.In which year was ‘Sadhujana Paripalana Sangham’formed under the leadership of Ayyankali?

A.1903

B.1907

C.1918

D.1924

Ans:B

62.Name the Social reformer who participated in the Kakkinada Congress Session in 1923

A.T.K.Madhavan

B.Mannath Padmanabhan

C.C.Keshavan

D.K.Kelappan

Ans:A

63.’God is omnipresent.I don’t go to temple in search of God.Temple is the largest  institution that protects untouchability.’Who said this comment?

A.Swami Chinmayanandha

B.V.T.Battathirippad

C.Swami Anandhatheerthan

D.Swami Agamanandha

Ans:C

64.Who is the present Human resource minister of India?

A.Prakash Javedkar

B.Smrithi Irani

C.Menaka Gandhi

D.Uma Bharathi

Ans:A

65.Who is the present Vice Chairman of Planning Board in Kerala?

A.Aravindh Panagariya

B.Geetha Gopinath

C.V.R.Ramachandran

D.Sudhakar Prasad

Ans:C

66.Which is the first digital state in India?

A.Karnataka

B.Kerala

C.Seemandhra

D.Punjab

Ans:B

67.Who won the Dadasahib Phalke Award in 2015?

A.Shashi Kapoor

B.Gulzar

C.Adoor Gopalakrishnan

D.Manoj Kumar

Ans:D

68.Who is the sports player known as ‘Flying fish’?

A.Larisa Latynina

B.Michael Phelps

C.Usain Bolt

D.Milkha Singh

Ans:B

69.Which part of the engine operate the valve?

A.Connecting Rod

B.Crankshaft

C.Camshaft

D.Timing Gears

Ans:C

70.Inlet and exhaust ports are situated in the two stroke engine at:

A.Oil sump

B.Inlet manifold

C.Air filter

D.Cylinder valves

Ans:D

71.Piston Rings are commonly made of:

A.Cast Iron

B.Bronze

C.Zink

D.Copper

Ans:A

72.Cutting Tool used to finishing and enlarging a drilled is known as:

A.Die

B.Reamer

C.Bore gauge

D.Tap

Ans:B

73.A petrol engine:

A.Is a compression ignition

B.Is an external compression engine

C.Uses gasolian as fuel

D.Is a spark ignition engine

Ans:D

74.Which instrument used to check the specific gravity of the electrolyte of the battery:

A.Hygrometer

B.Hydrometer

C.Hydroscope

D.Lactometer

Ans:B

75.Engine Radiator core is made of:

A.Braze

B.Cast Iron

C.Plastic

D.Steel

Ans:A
76.The oil lubricating pump operated by:

A.Crankshaft

B.Rooker arm

C.Fly wheel

D.Camshaft

Ans:D

77.Connecting Roid connect the crankshaft and the :

A.Camshaft

B.Oil pump

C.Piston

D.Cylinder head

Ans:C

78.In-take Air-fuel in petrol engine burned in:

A.Cylinder

B.Caburettor

C.FIP

D.Air Filter

Ans:A

79.Which one of the following types of engines has the longest crankshaft?

A.Radial engine

B.Opposite engine

C.Inline engine

D.’V’engine

Ans:C

80.The connecting rod is built of:

A.Alloy steel

B.Brass

C.Cast iron

D.Aluminium

Ans:A

81.Which part Indicate the oil level on the engine sump?

A.Feeler gauge

B.Plastic gauge

C.Pitch gauge

D.Dipstick

Ans:D

82.The purpose of thermostatic is to keep the engine:

A.At desired temperature

B.Hot

C.Cool

D.Warm

Ans:A

83.Which one of the following parts is not a part of engine exhaust system?

A.Valve

B.Muffer

C.Pressure cap

D.Tail pipe

Ans:C

84.On the rear end of the crankshaft is mounted:

A.Fly wheel

B.Counter weight

C.Vibration damper

D.Timing sprocket

Ans:A
85.The minimum number compression rings in an automotive engine:

A.Three

B.Five

C.Two

D.One

Ans:C

86.A Diesel engine:

A.CI engine

B.SI engine

C.External combustion engine

D.Use gasoline as fuel

Ans:A

87.During suction stroke the charge drawn in a petrol engine is:

A.Petrol only

B.Air only

C.Air petrol mixture

D.None of the above

Ans:C

88.In a diesel engine feed pump is located on:

A.Cylinder head

B.FIP

C.Air filter

D.Injector

Ans:B

89.Valves are arranged to open before T.D.C. or B.D.C is reached this is called:

A.Lag

B.Lead

C.Overlap

D.None of the above

Ans:B

90.The mostly common used valve in automobile engine:

A.Poppet valve

B.Sleeve valve

C.Rotary valve

D.None of these

Ans:A

91.In diesel engine the fuel ignited by:

A.Glow plug

B.Spark plug

C.By virtue of temperature of compressed air

D.Injector

Ans:C

92.The camshaft controls:

A.Valve opening

B.Valve closing

C.Valve timing

D.All of these

Ans:D

93.Water sludge is formed in the crank due to mixing of:

A.Fuel and oil

B.Water and fuel

C.Water and oil

D.Water and oil

Ans:C

94.The exhaust manifold in small diesel engine is made of:

A.Cast iron

B.Brass

C.Aluminium

D.Copper

Ans:A

95.Slow seeping of fuel oil from the nozzle tip after cut off the fuel is called:

A.Clogging

B.Seepage

C.Pouring

D.Dribbing

Ans:D

96.From the oil pump the oil goes directly to:

A.Oil gallery

B.Oil strainer

C.Oil filter

D.Pressure switch

Ans:C

97.The hand priming device is put to use when the engine is:

A.Idling

B.Buring at full speed

C.Running at full speed

D.Not working

Ans:D

98.Which one of the following types of engine has the highest fuel efficiency?

A.Opposite engine

B.Radial engine

C.Inline engine

D.’V’engine

Ans:B

99.If the thermostatic is stuck closed,the engine will:

A.Over heat

B.Warm up slowly

C.Fail to start

D.Idle

Ans:A

100.Which of the following conductors is used as heating elements?

A.Tungsten

B.Carbon

C.Copper

D.Nichrome

Ans:D