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

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Growler test is conducted on
A) Starting Motor B) Cut out Relay
C) Battery D) Flasher unit

Automotive starting motors are
A) Series wound B) Series shunt wound
C) Shunt wound D) Both A) and B)

In a D.C. Generator magnetic field is produced in the
A) Armature B) Commutator
C) Carbon Brushes D) Stater

In a starter motor the field.... See more

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Which of the following is NOT a method to determine the friction power of an engine?
(^) Willan’s line (B)_ Wilson line
(C) Motoring test () Morse test

The purpose of ignition coil in an automobile ignition system is to:
(A) | step up the voltage in a spark plug
(B) _ step down the voltage in a spark plug
(C) step up the voltage in a diesel injector

(D) step down the voltage in a.... See more

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The oil pump used in a lubrication system :
(A) Gear pump (B) Rotor pump
(C) Plunger pump ൯) Allof these

The Positive Crankcase Ventilation (PCV) the system is that it :
(^) mixes fuel with air
(B) promotes combustion by creating a swirling movement in the air fuel mixture
(C) returns blow-by gases from the crankcase to the intake system

(D) feeds blow-b.... See more

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Which fuel system develops the high diesel pressure by hydraulic energy ?
A) CRDI fuel system B) Inline FIP system
C) HEUI fuel system D) Distributor type FIP system

Why baffles are provided in the fuel tank ?

A) Minimize the slashing of fuel due to movement inside the tank
B) To make rectangular and lengthy fuel tank

C) To make chambers in the fuel tank

D.... See more

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What is the primary purpose of a Variable Intake Manifold system in a Electronic

Fuel Injection ?

A) To enhance the volumetric efficiency

B) To increase air-fuel ratio

C) To reduce carbon deposit
)

D) To eliminate carbon monoxide

It is a device which increase the pressure of the air fuel mixture from the carburettor
before it enters the engin.... See more

A:-Camshaft
B:-crankshaft

C:-Timing belt
D:-Distributor

Correct Answer:- Option-A

Question28:-The function of a glow plug in a diesel engine is

A:-To ignite the air-fuel mixture

B:-To control the timing of fuel injection

C:-To preheat the combustion chamber for easier cold starts
D:-To regulate the flow of exhaust gases

Correct Answer:- Option-C

Question29:-The component that is responsible for controlling the ti.... See more

(11) Refrigerator (b) Kelvin Planck statement
(iii) Internal Energy (c) Clausius statement
(iv) Reversibility (d) Point function

A:-(i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)
B:-(i)-(b), (ii)-(c), (iii)-(d), (iv)-(a)
C:-(i)-(b), (ii)-(c), (iii)-(a), (iv)-(d)
D:-(i)-(c), (ii)-(b), (iii)-(a), (iv)-(d)
Correct Answer:- Option-B

Question78:-A closed system received heat transfer of 130 KJ and has a work
transfer of 165 KJ. The change of internal energy isSee more

C:-Maintains a seal and prevents the fuel leakage

D:-Maintains a seal and prevents escape of burned gases from the combustion
chamber to sump

Correct Answer:- Option-D
Question57:-A cylinder block is normally made of
A:-Aluminium
B:-High carbon steel
C:-Cast iron
D:-Mild steel
Correct Answer:- Option-C
Question58:-In a four stroke diesel engine, the inlet valve
A:-Opens at T.D.C. and closes at B.D.C.
B:-Opens at 10° before T.D.C and clos.... See more

Question70:-In Petroil system, the percentage of lubricating oil mixed with petrol is
i. 2%
ii. 3%
iii, 5%
A:-Only i and iii
-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question71:-Which types of oil pumps are commonly used in automobile ?
i, Gear pump
ii. Rotor pump
iii, Plunger pump
A:-Only i and iii
B:-Only i and ii
C:-Only ii and iii
D:-All of the above (i, ii, and iii)
Cor.... See more

C:-Power used in suction and exhaust stroke
D:-None of the above
Correct Answer:- Option-C
Question49:-Thermal efficiency of 2-stroke engine compared to a 4-stroke engine is
A:-More
B:-Less
C:-Equal
D:-None of the above
Correct Answer:- Option-B
Question50:-The compression ratio of a diesel engine compared to petrol engine is
A:-More

D:-None of the above
Correct Answer:- Option-A
Question51:-For the same compression ratio which is efficien.... See more

C:-Asbestos
D:-Ceramic
Correct Answer:- Option-B
Question68:-Epoxy compound used with underground cable does not need
A:-Heating
B:-Armouring
C:-Insulation
D:-Core
Correct Answer:- Option-A
Question69:-The chemical used in breather is
A:-Copper sulphate
B:-Sodium chloride
:-Silica gel
D:-Potassium chloride
Correct Answer:- Option-C
Question70:-Graphite is used in nuclear power plant as a
A:-Fuel
B:-Coolant
C:-Electrode
D.... See more

Correct Answer:- Option-A
Question58:-The length variation between leaf spring eyes by the oscillation of leaves are accommodate with the help of
A:-Centre bolt
B:-Shackle
C:-'U' Clamp
D:-Bracket
Correct Answer:- Option-B
Question59:-Which among the following is a disadvantages of hypoid gear using in final drive?
A:-Low chassis height
B:-Smaller pitch overlap
C:-Rough running
D:-Less ground clearance
Correct Answer:- Option-D
Question60:-The s.... See more

Correct Answer:- Option-D
Question29:-The function of fly wheel is
A:-Smoothen the power flow
B:-Serve as the part of the clutch
C:-For starting purpose
D:-All of the above
Correct Answer:- Option-D
Question30:-Excessive end play of the crank shaft is prevented by using
A:-Sleeve bearing
B:-Thrust bearing
C:-Shaft journal
D:-Fly wheel
Correct Answer:- Option-B
Question31:-The throttle position sensor can be checked by
A:-A digital voltmeter.... See more

C:-Float and needle valve
D:-Pressure regulator
Correct Answer:- Option-C
Question49:-Which components help to control body roll when cornering or driving rough road.
A:-Sway bar
B:-Lower control arm
C:-Upper control arm
D:-King pin
Correct Answer:- Option-A
Question50:-Any short circuit in the armature winding tested with
A:-Multimeter
B:-Ammeter
:-Voltmeter
D:-Growler
Correct Answer:- Option-D
Question51:-Out of round brake drums caus.... See more

Question98:-The theoretically correct air-fuel ratio for petrol engine is approximately
‏1ھ‎
‎6: - 1
C:-25:1
D:-15:1
Correct Answer:- Option-D
Question99:-The thermal efficiency of a diesel engine is of the order of
A:-90%
B:-15%
C:-35%
D:-70%
Correct Answer:- Option-C
Question100:-Diesel Engine fuels are rated by
A:-Cetane number
B:-Octane number
C:-HUCR
D:-CFR number

Correct Answer:- Option-A
.... See more

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The non-bonding molecular orbital present in the MO picture of sigma bonding in octahedral
complexes is

^) ५७ തമ
© e യമ

The reaction between alkyl halide and lithiumdialkyl copper to obtain an alkane is called
(A) Wurtz reaction (B) Sendren’s reaction
(C) Corey -House reaction (D) Curdy’s reaction

The octane number of diesel is expressed by mixing a sample of iso octane with
(ಹ) .... See more

0622017 ااا ااا الام

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Nano is equal to
‏(م‎ 8) 100 0) 1071 0) 105

Litmus paper

ಹಿ) Gives a spsctrum of colours to acid conditions
B) Tums blue under acid conditions

C) Tums red under alkaline conditions

D) Tums blue under alkaline conditions

The main constituent of liquified natural gas is.... See more

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The compression ratio is the ratio of :

(A) Swept volume to Total volume

(8) Total volume to Swept volume

(C) Swept volume to Clearance volume
(D) Total volume to Clearance volume

The compression ratio for petrol engine is :
(ಸ) 3106 ൫ 5198 (೦ 15020 (D) 208%

A thermodynamic cycle consisting of, one constant pressure, one c.... See more

58

1/1 111/1101 സ്യ | indicates
{^} (दाष evlinder temperature (98) Coolant temperature
(2) Vubricating oil tempernture (0) All of the above

Fusiction of Flywheel it
(५) store ener
(9) ४
(८) 1
(>) ‏٣۸۱۱۹‎ 100

1 diesel engines

mmon between the petre
(ക) விளை (8) ++ cleaner
(

< {11161 (0) Injector

போங்க
(ಗಿ) 101120 1111011113 வம்சம்‌

٣�.... See more

O O 108/2017

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Simplex method is the method used for
A} Value analysis B) Linear programming
©) Network analysis D) Work sampling

Work done in free expansion is
A} Zero 8) Minimum
C) Maximum D) Negative

A cycle consisting of one constant pressure, one constant volume and two is entropic
process is known as

A} Camot cycle B) St.... See more

108/2017 [1111111111

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The operation of removing the trapped air from the hydraulic brake system is known as
A) Trapping B} Cleaning
C) Bleeding D) Tapping

A Traction Control System (TCS) in automobiles controls

A} Vibration on the steering wheel

B} The torque that is transmitted by the tyres to the road surface
C) Engine power during acceleration

D) S.... See more

O O 108/2017

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The air standard efficiency of an Otto cycle compared to diesel cycle for the given
compression ratio is

A} More B) Same
C) Less D) Unpredictable

If the intake air temperature of IC engine increases, its efficiency will
A) Unpredictable B) Remains same
C) Depend on other factors D) Decrease

An important characteristi.... See more

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The statement “It is impossible to construct an engine working on cyclic process, whose sole
purpose is to convert the whole heat energy supplied to it into an equivalent amount of
work” is known as

(^) ண்டி statement (8) Kelvin-Planck statement
(ಲ) Joule's statement (D) Avagadro’s statement

The volumetric efficiency of a compressor is defined as :.... See more

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is the passage around the cylinder through which water is allowed to flow to
cool the cylinder.

(A) Water Jacket (B) ‏اس‎ (9 Manifold (D) ೫೫

Top of the piston is called
(A) Boss (B) Dome ര ‏الله‎ (D) Land

On an engine that drives an automatic transmission a is used in the place of a
flywheel.

(^) Back Plate (3) Har.... See more

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Hazardous Heavy Vehicles should have
(ಹ) One Driver
(@ Tweo drivers and One Cleaner

®)


Two Drivers

One Driver and One Cleaner

The number of persons that can be carried in cabin of goods carriage is mentioned in

(A) Insurance Certificate
(C) Registration Certificate

®)


‘When is Exhaust brake usually.... See more

1482017 O

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A man can develop
A) 0.1hp 5) 0.500
0) 075೧0 0) 1.000

Medium size bullock can develop

&) 0.501௦ 0.75 ஈர 5( 0.7510 1.00

م 1.5 1.010 ‎D)‏ م 1.1 010 0.75 ©

ltis termed as , because 1೧ this type of irrgation, water does not wet the soil
surface.

A) Surface irrigation B) Flood irrigation
See more