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Related with 'DIESEL MECHANIC' | We found Total 311 Question paper ..!

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251.
DRAUGHTSMAN GRADE II (MECHANICAL) in KEAEC Ltd and OVERSEER/ DRAFTSMAN (MECHANICAL) GRADE II in PWD/ Irrigation
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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

252.
Work Superintendent/ Tracer/ Overseer G III/Draftsman Gr II in Agriculture/ KWA/ Soil Survey & Soil Conservation
068/21

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When a process are performed on a system in such a way that the final state is
identical with initial state known as

A) State of a system B) Thermodynamic cycle
C) Thermodynamic property D) Zeroth Law of Thermodynamics

The extension line should extend 3 mm beyond the
A) Outline B) Centre line
C) Dimension line D) Hidden line

The amount.... See more

253.
Operator Grade III - Apex Societies of Co-operative Sector & MATSYAFED
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Which one of the following power source is used in arc welding where electricity is not
available?

(A) Generator set (B) Transformer set

(C) Rectifier set (D) Inverter Set
Which one of the following Heat treatment process is used for removing internal stresses
developed due to uneven heating and cooling of metal?

(A) Annealing (B) HardeningSee more

254.
Operator Grade III - Apex Societies of Co-operative Sector & MATSYAFED
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What is the purpose of throttle valve in the carburettor?

(A) Control air fuel mixture into engine

(0) Fitter the fuel

Which one of the following is the working cycle of Compression Ignition Engine?

(^) Diesel Cycle
(C) Sterling Cycle
What is the compression ratio of petrol engine?

(A) 10 : 110 18 : 1
(@ 6 : 110 11: 1
See more

255.
Mechanic - Kerala Agro Machinery Corporation Ltd
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In diesel cycle engine the combustion takes place at
(A) Constant temperature

(B) Constant volume

(C) Constant pressure (D) Constant pressure & temperature

The dwell angle on a three cylinder engine compared to four-cylinder engine is

(A) More (B)

(C) Same (D) May be more or less

Less

In a four stroke .... See more

256.
Assistant Manager (Chemical) - Kerala Ceramics Limited
Celli) and (ii)
2:0൫ and (iv)
Correct Answer: Option-C

‘Question24:-Pick out the wrong statements from the following,

(i) Bound moisture is removed during constant rate drying period,

(i) Free moisture is removed during falling rate drying period.

(ii) The some of free moisture and equilibrium moisture in a solid is called the critical moisture,
(iv) The driving force for mass transfer in a wet solid is its free moisture content.

०0).... See more

257.
Assistant Manager (Chemical) - Kerala Ceramics Limited
Question31:-Crude petroleum consists of carbon and hydrogen composition
4:84 - 87% carbon and 11 - 14% hydrogen
8:22 -14% carbon and 84 - 87% hydrogen
೦-54% carbon and 25% hydrogen
0:-70- 72% carbon and 5 - 7% hydrogen
Correct Answer:- ೦೧000
Question32:-Polymerisation of petroleum products leads to
‘A Causes olefins to combine with each other
B:-Produce i-octane from cracked gases containing n-butane and i-butane
C-Causes aromatics to combine with each.... See more

258.
Higher Secondary School Teacher in Zoology - Kerala Higher Secondary Education
‘Ac Four genes were inactivated
B:-Six humans genes were inserted into the pig genome
C-Retroviruses were removed
०-५॥ of the above
Correct Answer:- Option-D
Question66:-Pigs exposed to the coronavirus don't show clinical signs of disease nor do they transmit the virus to other animals. Find the reason
‘Ache infected pig cells underwent necrosis,
B:-The infected pig cells underwent apoptosis
C-The uninfected pig cells underwent necrosis
D-None of the.... See more

259.
Instructor Grade I in Chemical Engineering (Engineering Colleges) - Technical Education
B:-25%
೦30%
5:496
Correct ۸۳۰۸۷۴ ೦೧0078.
Question23:-A solution of NaOH is prepared by dissolving 40 ‏و‎ NaOH in 90 ‏و‎ water. The composition of NaOH in the solution as mole fraction and mass fraction are approximately
0.2 and 0.44
B:-0.2 and 0.69
6.0.167 and 0.44
0.167 and 0.31

Correct Answer: Option-D

Question24:-Pure carbon is completely bumt in oxygen. The flue gas analysis shows 70% C0. , 20% CO and 20960, . The percen.... See more

260.
Mechanical Draughtsman - Travancore Cochin Chemicals Limited
c-Only (i and i)
ലി ofthe above (iii and 10)
Correct Answer:- Option-D
‘Question15::Which one of the following is used for bringing the sheet metal closely together after inserting the rivet in the hole?
കം
७२५०५०८
ടോ
0-೦11:
Correct Answer: ೦೧0078.
‘Question16::Which one ofthe following is not a part of diesel engine?
‘Ac Fuel injector
7;
Fuel pump
D:-Spark plug
Correct Answer:- Option-D
Question17:.... See more

261.
Junior Instructor (Mechanic Auto Electrical and Electronics)
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Type of wheel desirable in racing cars is
A) Magnesium alloy wheel
C) Aluminium alloy wheel

02/23

B) Disc wheel
D) Wire wheel

When loading a vehicle, the load distribution should be

A) More at front wheels
B) More at right wheels
C) More at rear wheels
D) Equal at all wheels

In modern diesel engines pilot injecti.... See more

262.
Pump Operator
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019/23

A hydraulic pump converts into hydraulic energy.

A) Thermal energy B) Pneumatic energy
C) Electronic energy D) Mechanical energy
What is the use of directional control valve in hydraulic system ?

A) Open or close flow path B) Decrease the pressure
C) Control the valve D) Increase the pressure

What is the working c.... See more

263.
Motor Vehicle Inspector, Assistant Motor Vehicle Inspector
18. Morse test in Multi-cylinder engines is used to determine
(A) Volumetric efficiency (B) Brake thermal efficiency
(C) Indicated power (D) Brake power

19. Thermal conductivity of copper with rise in temperature
(A) Decreases (B) Increases
(C) Remains constant (D) None of these

20. By which of the following modes of heat transfer, Heat is mainly transferred from an
insulated pipe to the surrounding still air?
(A) Conduction (B) Radiation
(C) Forced .... See more

264.
Motor Mechanic, Tradesman (Automobile Mechanic) - Health Services,
072/23

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The firing order of a 6 cylinder diesel engine is
i. 1 -5-3-6-2-4

ர்‌. 1-4-2-6-3-5
iii, 1-6-5-3-2-4
iv. 1-3-4-2-6-5
A) ionly B) both ii and iii
C) both ii and iv D) both i and ii

The qualities of a bearings are
i. Fatigue strength
ii. Embedability
iii. Conformability
iv. Thermal conductivity
A) both ii and iii B) both i and iv
C) all of.... See more

265.
Deputy Engineer (Mechanical), Inspector of Factories and Boilers Gr II, Assistant Engineer (Mechanical)
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050/23

Which of the following is a correct statement ?

A) areversible adiabatic process is an isentropic process

B) an isentropic process is an adiabatic process

C) an irreversible adiabatic process is a constant entropy process
D) entropy decreases during an irreversible adiabatic process

For the same compression ratio and heat sup.... See more

266.
Tradesman (Diesel Mechanic)
074/23

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Sensor senses the information in the form of physical or chemical variables and
sends that information to the ECM in the form of

A) Pulse B) Current
C) Frequency D) Voltage

The two important properties of the cylinder head gasket are
A) Tenacity and compressibility

B) Compressibility and flexibility

C) Heat resistance and expansion on resistan.... See more

267.
Tradesman (Diesel Mechanic)
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074/23

Most high-speed C.|. Engines operates on following cycle
A) Dual combustion cycle B) Reverse Carnot cycle

C) Otto cycle D) Diesel cycle

The ratio of the weight of the induced charge and the charge needed to completely
fill at atmospheric pressure and normal temperature in the swept volume
A) Mechanical efficiency B) Volume.... See more

268.
Workshop Instructor/ Demonstrator in Automobile Engineering
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091/23

Which of the following are intensive properties of a thermodynamic system ?
i) Kinetic Energy

ii) Temperature

iii) Pressure

A) Only (i & ii) B) Only (ii & iii)

)
)

iv) Volume
)

C) Only (ii, iii & iv) D) Only (i, iii & iv)

First law of thermodynamic refers to conservation of
A) Energy B) Mass C) Momen.... See more

269.
Workshop Instructor/ Demonstrator in Automobile Engineering
091/23

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92.

The presence of air in the hydraulic braking system because the brakes are not
able to function properly is called as

A) Brakes noise B) Braking less
C) Burning smells D) Spongy brake

A valve that doesn’t close fully will
A) allow combustion gases to escape, which increases engine performance
B) not allow combustion gases to escape, which reduces engine performanceSee more

270.
Lecturer in Civil Engineering
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110/23

Which type of engine of the same specification need higher compression ratio ?
A) Petrol engine B) Diesel Engine
C) Gas Turbine D) All run with same ratio

Which component is used to smoothen the output energy of an automobile engine ?

A) Flywheel B) Governor

C) Carburetor D) Both A) and B)
Draft tube is compulsory for

A) Impulse t.... See more

271.
Assistant Project Engineer - Kerala Land Development Corporation Ltd
109/23

84. In case of canal flow system, a sudden and turbulent but controlled passage of water
at a reach through appropriate functional arrangement is called as hydraulic jump.
In this context, which of the following statement is incorrect ?
A) Flow at the location is classified as rapidly varied flow

B) Passage of water is from subcritical to supercritical state

C) Considerable dissipation of energy is realised

D) Water flow transforms from shal.... See more

272.
Assistant Project Engineer - Kerala Land Development Corporation Ltd
109/23

84. In case of canal flow system, a sudden and turbulent but controlled passage of water
at a reach through appropriate functional arrangement is called as hydraulic jump.
In this context, which of the following statement is incorrect ?
A) Flow at the location is classified as rapidly varied flow

B) Passage of water is from subcritical to supercritical state

C) Considerable dissipation of energy is realised

D) Water flow transforms from shal.... See more

273.
Draftsman Grade I in Kerala Water Authority , Sub Engineer (Civil) in KSEB Ltd
114/23

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For aclosed non-flow thermodynamic system, which of the following property relation
is valid ?

A) TdS = dH — Vdp B) TdS =dH + Vdp

C) TdS =dQ + pdV D) TdS =— dH - Vdp

If a four stroke cycle diesel engine running at 1000 rpm has a displacement of
20 litres and brake mean effective pressure of 6 bar, what will be its brake power ?

A) 200 kw B) 100 kw
C) 1.... See more

274.
MACHINE OPERATOR GR.II(Kerala State Co-Operative Coir Marketing Federation LTD)
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Which energy source is used for non conventional power generation?

(A) Steam
(C) Wind

൯) Diesel
(D) Water

Which type of turbine is suitable for high head hydro electric power plant?

(^) Kaplan turbine

(C) Francis turbine

(B)_ Impulse turbine

(D)_ Reaction turbine

Which device in a steam power plant is used to heats the feed w.... See more

275.
LINEMAN GR.I
143/23

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An Abel’s apparatus is used to determine
A) Ignition quality of petrol

B) Ignition quality of diesel

C) Pour point of lubricating oils

D) Flash point of lubricating oils

. From the main oil gallery, lubricating oil goes to

A) Oil filter housing

B) Crankshaft main bearings

C) Oil sump

D) Connecting rod big end bearings

For jump-star.... See more

276.
Motor Mechanic/ Store Assistant
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218/23

The sensitive bench drilling machine is capable of drilling holes upto
diameter.

A) 8.5mm B) 10.5 mm C) 12.5 mm D) 13.5 mm

Which of the following is related to countersunk tooth type lock washer ?
A) Used with small head screws B) Used on oval type head screws
C) Mounting holes are over size D) Provides the greatest resistance

Which of the.... See more

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