| Post Name | LABORATORY TECHNICAL ASSISTANT (MAINTENANCE & OPERATION OF MARINE ENGINES) |
|---|---|
| Department | VHSE |
| Question Paper Code | 016/2015 |
| Date of Test | 23 January 2015 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
2
Unit of pressure in SI system ;
Answer
A. Pascal
3
“lf two thermodynamic systems A & B are in thermal equilibrium with a third system C,
then A & B are in thermal equilibrium with each other". This statement is called :
Answer
A. Zeroth Law of Thermodynamics
4
Compression ignition engines are called diesel engines because :
Answer
D. It was invented by Rudolph diesel
5
What is compression ratio?
Stroke volume—Clearance volume
A
Answer
B. Clearance volume
6
The Diesel cycle consists of :
Answer
C. Adiabatic compression -» Constant pressure heat addition -— Adiabatic
7
Among the four components given below, identify the one, which is not a part of diesel |
engine :
Answer
B. Carburetor )
8
Among the four types of engines given below, which will have largest fly wheel :
Answer
D. Four stroke diesel engine |
9
In I.C. engines the reciprocating motion is converted to rotary motion by the:
Answer
A. Crank mechanism
10
A turbo charger :
(Hint : Size refers to cylinder volume)
Answer
A. -Increase the power without increasing the size of the engine
11
. 11. Anexhaust valve can be identified as :
Answer
C. All of the above
12
An J.C. engine with 6 cylinders will have :
Answer
B. 7 main bearings
13
Large high power engines used for ships are :
Answer
D. Two stroke diesel engine
14
In large high power marine engines a cross head is used to connect :
Answer
B. Piston rod to connecting rod
15
The ratio of brake horse power to indicated horse power is called :
Answer
D. Mechanical efficiency
16
The tendency of a force to rotate an object about an axis is called :
Answer
C. Torque
17
The actual power developed inside the cylinder is called : |
Answer
B. indicated power
18
Reversible engines are commonly used in :
Answer
A. large marine veasels
19
In a transmission gear box, the number of teeth in the driving gear is 38. To rotate the
output shaft at half of the rpm of driving shaft, the number of teeth required in the driven
gear 18:
Answer
C. 76
20
The bearing to support the propeller shaft is :
Answer
A. Plummer block
21
Select the fuel with highest L.C.V. (lower calorific value) from the options :
:
Answer
C. c) LNG.
22
Autoignition temperature of a substance is the lowest temperature at which it will
spontaneously ignite in normal atmosphere without an external source of ignition, Among
the commonly used fuels,—————— has the lowest autoignition temperature.
|
Answer
D. Diesel oil
A 5 16/2015
[P.T.O.]
23
The expanded form of CRDI is :
Answer
B. Common Rail Direct Injection
24
Fuel service tank → fuel feed pump → ________ → fuel injector.
Answer
D. Fuel injection pump
25
Fuel service tank — fuel feed pump —» —————— -—> fuel injector.
Answer
D. Fuel injection pump
26
The fuel quantity to be injected to the cylinder is controlled by the movement of —————— of
the fuel injection pump.
Answer
C. Compression spring
27
Example for solid lubricant : )
Answer
A. Paint
28
Lubricating oil priming pump is used for :
Answer
B. Lubricate the engine parts after starting |
29
Choose the option which is NOT the purpose of a lubricating oil :
Answer
D. Prevention of corrosion
30
Lubrication system suitable for small engines :
Answer
B. periodical lubrication
31
SAE 15 W-40 is one of the grades used in lubricating oil. The “W" stands for :
Answer
A. Water
32
Fins are used in Air Cooled IC engines :
Answer
C. To get attractive shape to engine
33
The coolant used in Cl engine cooling eyatem should be :
Answer
A. Acidic
34
The thermostatic valve in the cooling system is used to:
Answer
D. To by pass the cooling water
35
Most suitable cooling system for a marine engine is :
Answer
B. Oil cooling system
36
An intercooler is :
Answer
D. To cool the cabin |
37
Muffler is used in the exhaust system for :
Answer
C. the reduction of harmful emissions
38
The colour of the exhaust is black. Then the engine is: Pi
Answer
B. Having lubricating oil leaking to combustion chamber
39
The component that is designed to maintain a constant engine speed irrespective of load
variation |
Answer
A. Fuel injection pump
40
Very large diesel engines are started using :
Answer
C. Hydraulic starter motor
41
The one way clutch
Answer
A. Automatically engauge the starter pinion to flywheel
42
The Safeway to connect starter battery terminals on board ship is:
Answer
D. all are safe
43
The lead-acid battery rooms to be well ventilated to avoid fire hazards, because of :
Answer
B. emission of oxygen gas
44
Open circuit voltage of a single cell of lead acid battery is -
Answer
C. 12 volts
45
Alternating voltage is generated by :
Answer
D. Both A and B are wrong
46
The voltage generated in an alternator depends on :
Answer
B. Strength of magnetic field
47
The purpose of capacitor of a single phase induction motor is :
Answer
A. to increase efficiency
48
The C.I, engine pistons are generally made of :
Answer
C. Copper
49
White metal is an alloy used in diesel engines to manufacture ;
Answer
B. Exhaust valve
50
Cylinder liners are subjected to extreme heat of combustion and it has to permit the piston
and piston rings with minimum friction. The material suitable for making liners is:
Answer
A. Heat resistant steel
51
Valve clearance or tappet clearance is provided to:
Answer
C. Increase thermal efficiency
:
52
Butt clearance or piston ring end gap is the distance between the ends of piston ring :
Answer
D. stretched with a specific amount of force |
53
Which is to be checked ‘daily’ to ensure trouble free running of a diesel engine? |
|
Answer
D. Crank case lubricating oil level
54
Most suitable maintenance system suitable for efficient running of diesel engine plant is :
Answer
A. advance maintenance system
55
A four stroke six cylinder in line compression ignition engine is running at 400 rpm. Then the
| engine camshaft is running at :
|
Answer
C. 400—
56
57
Bourden tube is related to the measurement of :
Answer
C. temperature
58
The liquid used in glass tube thermometer :
Answer
D. None of these
59
Internal combustion engines are provided with "emergency automatic stops (emergency |
trips)" in the condition of :
Answer
B. very high cooling water temperature |
60
Sea water is used for the lubrication of :
Answer
B. stern tube bearing
61
A ship does not require a gear box or engine reversing mechaniam if it is fitted with a:
Answer
D. stern thruster
62
Diameter of a shaft can be measured using the :
Answer
A. pitch gauge
63
An open ended spanner with number 24 denotes :
Answer
C. weight in gram
|
64
A striking tool :
Answer
B. punch
65
Which of the following is used for the accurate measurement of small distances :
Answer
A. feeler gauge
66
7d.
A piston ring compressor is used to :
(A) insert piston into the cylinder
(3) insert piston ring to the piston
(C) to measure piston ring end gap
(D) to reduce piston ring end gap
Emeine driven lubricating oil pumps are :
Answer
C. gear pump
67
Which is not a positive displacement pump?
Answer
B. Centrifugal pump
68
The purpose of priming in centrifugal pump is :
Answer
B. to remove air from the suction pipe to the casing top
69
Wartsila — Sulzer RTA 96 C is considered as the most powerful IC engines today. The power
produced per cylinder is approximately :
Answer
D. GOOO kW
70
is not a part of a fuel injector:
Answer
D. barrel
71
Isothermal process is a process where :
Answer
A. temperature is constant
72
Example for an extensive property :
Answer
C. heat
73
' Scavenging is a process in internal combustion engine :
Answer
B. to push out exhaust gases and fill the cylinder with fresh air
74
Mist lubrication is used in:
Answer
A. two stroke petrol engine
75
Aninternal snap ring is used:
Answer
C. to lock piston pin
76
The purpose of catalytic converter is :
Answer
D. to reduce pollution
77
Otto cycle is a set of processes used by :
Answer
B. petrol engine |
78
‘The approximate position at which the exhaust valve opens in a four stroke diesel engine is :
Answer
C. 30° before B.D.C. of power stroke
79
Advantage of using large slow speed two stroke engines :
Answer
D. all of the above
80
Decompression lever in smaller diesel engines is used for the purpose of :
Answer
A. easy hand cranking
81
Which river in India forms the largest river Island in the world?
Answer
C. Brahmaputra
82
/ €2. From which monsoon India receives the maximum rainfall?
Answer
B. South West Monsoon
83
“The revolt of 1857 is the last flickering of Indian feudalism” — Who made this statement?
Answer
C. Jawaharlal Nehru
84
Who started the Urdu Journal Tahzib - al - akhlag?
|
Answer
B. Sir Syed Ahmad Khan |
85
Who designed the gateway of India?
Answer
D. George Wittet |
86
Which incident in the freedom struggle of India was called as storm in a teacup? |
Answer
A. Salt Sathyagraha |
87
“Generations to come it may scarce believe that such a one as this ever in flush and blood
walked up on thia earth” - Who said this about Gandhiji?
Answer
D. Albert Einstein
88
Which is the most abundant type of soil- found in Kerala?
Answer
D. Laterite soil
89
Which is the highest peak in India?
|
Answer
A. Godwin Austen
90
NREGA was first implemented in :
Answer
C. Andhra Pradesh
91
Who organized the ‘Villuvandi Agitation’ in the year 1893?
Answer
A. Ayyankali
92
‘Prathyaksha Raksha Daiva Sabha’ - was founded by :
Answer
B. Poikayil Yohanan
93
Who organized ‘Yachana Yathra’ in 1951?
Answer
B. V.T. Bhattathirippad
94
Who founded Atma Vidya Sangham?
Answer
C. Vagbhatananda
95
‘Kannadi Prathista’ consecrated by Sree Narayana Guru situated at :
Answer
A. Kalavamkodam
96
Whois the Golden Ball winner in FLEA world cup 2014?
Answer
C. Lionel Messi
97
Which committee studied about the formation of Telangana, the 29" state of India?
Answer
D. Sreekrishna Committee
98
Who was the anti-superstition activist, shot dead recently?
Answer
D. Narendra Dabolker
99
Who was the Chief Guest of 65 Republic Day celebration, 2014?
Answer
B. Shinzo Abe
100
Which is the first zero land less district in Kerala?
Answer
A. Kannur
Discussion
Ask a doubt or share a tip.
No comments yet — start the discussion.