88.

86.

87.

88.

89.

90.

91.

92.

88.

The thermostat valve is starts to open at about:
(4) 90°C
(© 6

0)
യ

സള 06 വ pump is used in engine cooling system?

{A) Vane pump
€) Centrifugal pump

If the thermostat is stuck closed .The engine will:
வ Warm up slowly
{C) Fail to start

Radiator core should be cleaned by:
(ಹ) Reverse flushingSee more

001. Second law of thermodynamics defines
(മു பன (8 Work

(C) Enthalpy (D) Entropy

002. In a throttling process
(A) Volume remains constant (B) Pressure remains constant

(C) Temperature remains constant (D) 8! the three remain constant

003. Which of the following cycles has the highest efficiency?
ക്ര Otto cycle (B) Carnot cycle
(C) Stirling cycle (೧) Joule cycle

004. The value of universal gas constant (Ru) is
(ಹ).... See more

41.

42,

43,

44.

45,

46.

47.

48,

In a 4 stroke diesel engine the number of teeth of the camshaft sprocket is the
number of teeth of sprocket on crankshaft.

(ಹ) same (B) double
(0 कर्णा (D) none of these

The maximum wear of the bore occurred at
(ಹ) top non-thrust side (B) top thrust side
(C) bottom non-thrust side (D) bottom thrust side

At the end of combustion the tempe.... See more

49.

50,

51,

52,

53.

54,

55.

56,

57.

In muffler assembly catalytic converter is provided to
(^) increase power (B) reduce noise
(C) reduce pollution (D) none of these

Drive of the mechanical fuel pump is getting from
(ಹ) crank-shaft (8) cam-shaft
(0 connecting rod (D) timing gear

Drive of the high pressure pump in CRDI diesel engine is getting from
(ಹ) crank-shaft (8) cam-sha.... See more

66.

67.

68.

69.

70.

71,

72,

73.

74,

In compression ignition engines the particulates are caused by
(ಹ) lack of turbulence (B) lack of oxygen
(0 burning of lubricating oil (D) all of these

Lubrication and operation of fuel system components are done by natural lubricating
properties of diesel fuel. It is improved by

(ಹ) lead (B) sulphur
(C) nitrogen (D) hydrocarbons
To reduce.... See more

25,

26,

27.

28,

29

30,

31,

32,

0062020 T ര

While installing new piston rings, the ring end gap is tested after placing the ring in
(^) Piston (B) Inavice
(C) Cylinder bore (D) Inspecial fixture

In semi floating piston pin —
(ಹ) Pin free to move in boss and locked with connecting rod
(B) Pin locked with boss and connecting rod is free
(0 Both connecting rod and pin are free to move<.... See more

88.

86.

87.

88.

89.

90.

91.

92.

Green chemistry is also called as :
(4) Life chemistry (B) Environmental Chemistry
{C) Organic Chemistry (D) Sustainable Chemistry

are greener than the conventional methods.
(മ Electromagnetic waves
ற Micro waves
(0 Ultra violet waves
(2) Radio waves

CH, + 1/2 ‏و0‎ —» C,H,O (Ethylene oxide). This reaction will takes place under presence of<.... See more

93.

94.

95.

96.

97.

88.

‘Which of the following 18 not a permitted synthetic food colour?
{A) Indigo carmine {B) Rhodamine B
{C) Tartrazine (D) Erythrosine

The advantage of using conducting polymers in place of metals is their :
(4) Cost (3) Light-weight
(@ Thermal conductivity (2) Solubility

Laboratory gas is obtained by the cracking of :
{A) Gasolene (3) Diesel
)0 एष्ट ग (2) Kerosene
See more

Question19:-If the system of equations *x + ay = 0", *az + y = 0" and “ax+ z = 0" has infinite number of solutions प्री ` चे
=7
ಹಿಂ

0:--2
Correct Answer:- Option-C
Question20:-The function "F{x} = x~2 (x*2 - 4(x - 1}}* has a local minimum at the point *x = 7
Al
8:--1
C:-4
D:-2
Correct Answer:- Option-D
Question21:-Quick setting cement is produced by adding and by finely grinding the cement.
A:-Gypsum
B:-Aluminium Sulpha.... See more

Correct Answer:- Option-B
Question29:-Contact breaker points are generally made of
കടല
B:-copper
C:-tungsten
D:-vanadium
Correct Answer:- Option-C
Question30:-In diesel engine combustion takes place at
A:-tonstant pressure
B:-constant volume
C:-constant temperature
D:-none of the above
Correct Answer:- Option-A
Question31:-Why a drain plug is provided in the fuel tank
A:-remove sediments
B:-drain fuel
C:-both 1 8೧6 2
D:-.... See more

Correct Answer:- Option-B
Question29:-Contact breaker points are generally made of
കടല
B:-copper
C:-tungsten
D:-vanadium
Correct Answer:- Option-C
Question30:-In diesel engine combustion takes place at
A:-tonstant pressure
B:-constant volume
C:-constant temperature
D:-none of the above
Correct Answer:- Option-A
Question31:-Why a drain plug is provided in the fuel tank
A:-remove sediments
B:-drain fuel
C:-both 1 8೧6 2
D:-.... See more

Question19:-If the system of equations *x + ay = 0", *az + y = 0" and “ax+ z = 0" has infinite number of solutions प्री ` चे
=7
ಹಿಂ

0:--2
Correct Answer:- Option-C
Question20:-The function "F{x} = x~2 (x*2 - 4(x - 1}}* has a local minimum at the point *x = 7
Al
8:--1
C:-4
D:-2
Correct Answer:- Option-D
Question21:-Quick setting cement is produced by adding and by finely grinding the cement.
A:-Gypsum
B:-Aluminium Sulpha.... See more

42.

48.

44.

45.

46.

47.

48.

49.

The law related to transmission of pressure is:
(മ Faraday’s law (3) Pascal’slaw
(© Stevin'slaw (2) None of the above

A bearing shell has a slightly larger arc than bearing housing is called:
(മ Bearing tang {B) Bearing saddle
{C) Bearing crush {D) Bearing spread

In a normally operating engine, intake and exhaust valves are opened by a cam closed by t.... See more

59.

60.

6.

62,

68.

64.

68.

66.

67.

Thrust bearing wear will cause excessive :
(മ Crankshaft bending {B) Crankshaft vibration
{C) Crankshaft endplay (2) Crankshaft speed

A venturimeter is used to measure :
(ಹ) Pressure in a pipe (3) Total energy in a pipeline
{C) Velocity of flow in a pipeline യ Discharge through a pipe

The heading up of water due to an obstruction in its flow .... See more

17.

18.

19,

20.

21.

22.

28.

24.

25.

Transposition of overhead transmission line is done to :
(ಯ) To reduce to conductor material
(B) To make the voltage drop in each line the same
(0) To reduce the cost of supporting structures
(D) None of the above

Ferranti effect can be reduced by :

(A) Adding capacitors (B) Adding reactors

(C) Adding resistors (D) None of the above
See more

35/2015

Maximum : 100 marks
Time : 1 hour and 15 minutes

1. The unit of temperature in SI unit is :
(A) Kilogram (B) Centigrade
(C) Kelvin (D) Celsius

2. Crank case dilution is :
(A) Dilution of lubricating oil (B) Addition of water in crank case
(C) Dilution of diesel in crank case (D) None of these

ॐ. ‘The top ring on the piston is known as :
(A) Ring grove (B) Compression ring
(C) Oil ring (D) Scrapper ring
See more

34.

36.

87.

بعد

40.

41.

The coil spring in wish bone suspension placed between the :

(A) Upper wish bone and the cross member
(B) Shock absorber and the eross member
(C) Lower wish bone and the cross member
(D) Three wish bones

The packing brake generally acts on :
(^) Propeller shaft (8)
(0) Rear wheels ൩

The rating of diesel fuel is given by :

(A) 1.5 (8)
(¢) cetane number �.... See more

65.

67.

70,

Th

72.

73.

While smoke from a diesel engine can be expected during :

(A) Start up or idling (B) High load operation
(C) High Speed operation ൩) All of the above
The term BTDC stands for :
(^) Below Top Dead Centre (B) Before Top Dead Centre
(C) Back Top Dead Centre (D) Balance Top Dead Centre

‘The advantages of tube less tyre over tube type tyre is :
(ಕಿ) slow air leakage (B) chances o.... See more

65.

66.

67.

68.

69.

70.

71.

72.

73.

Which of the following will be present in diesel engine?
(A) Spark plug (B) Carburetor
(C) Fuel injector (D) None of these

The Government of Kerala undertaking company manufacturing Power Tillers is:

(A) VFPCK (B) VST
©) 0 (D) KAMCO
Tillage is the term referring to:
(A) Increasing moisture content in soil (B) Increasing bearing strength of so.... See more

059/20

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

The of cement is measured in terms of its specific surface which
can be determined by various methods out of which Blaine’s air permeability method
is quite frequently used.

A) Soundness B) Fineness C) Heat of hydration D) Setting time
The modulus of elasticity of M25 concrete is

A) 25000 N/mm? B) 20000 N/mm?

C).... See more

059/20

75.

76.

77.

78.

79.

80.

81.

The most economical DC distribution system is
A) Interconnected system B) Radial system
C) Ring system D) None of the above

Due to sag between two supports the conductor takes the form of
A) Catenary B) Semi-circle
C) Triangle D) Ellipse

In suspension type insulators, the string efficiency can be improved by
1. Grading of insulator discs

2. Red.... See more

16. Compared to a four stroke engine of same size and rpm, a two stroke engine practically
produces
(A) _ twice the power
(B) same power
(೮) _ half the power
(D) 1655 than twice and greater than same power produced by the four stroke

engine

17. ^ flywheel is used to
(A) _ increase power produced by a system
(B) decrease power fluctuations in the system
(C) decrease power produced by a system

(D) increase power fluctuations in the syste.... See more

063/21

23. Diesel engine burns fuel of volatility.
A) Low B) Constant C) Same D) High

24. Which process is called scavenging ?
A) Burnt gases escape into the atmosphere

B) The mixture is ignited by electric spark

மட

) TI
) Air fuel mixture drawn in the crank case
) TI

he mixture flows down and pushes the burnt gas out

25. Which of the engine has maximum fuel efficiency ?
A) Inline engine B) Radial engine
C.... See more

30.

31.

32.

33.

34.

35.

36.

37.

Final drive is provided on tractors
A) To reduce torque

C) To increase torque

> 1

) 3010 40 per cent
) 35 to 40 per cent

೧

اح >>>

) 10 kmph

೧

) 10 miles per hour

4

he low speed engine runs at speed of

063/21

B) To reduce traction

D) To increase speed

he th.... See more

066/21

41. The sequence of working stroke takes place in a multi cylinder engine is called
A) Crank throw B) Cycle
C) Mean effective pressure D) Firing order

42. The cold starting device of a petrol engine is called
A) Choke B) Glow plug
C) Ignition coil D) Spark plug

43. Ina petrol engine speed ratio of engine cam shaft and distributor shaft is
A) 1:2 B) 1:4
C) 2:1 D) 1:1

44. Which type valves are used in air compressor ?
A) Reed v.... See more

49.

50.

51.

52.

53.

54.

55.

56.

066/21

In a petrol engine evaporative emission is controlled by

A) Catalytic convertor
©) SCR

Excessive valve clearance results
A) Valve lead

C) Decrease volumetric efficiency

Which among the following is used to close
A) Union
C) Cap and plug

Engine crankshaft bearings are
A) Ball bearing
C) Foot step bearing
<.... See more