Vocational Instructor in Maintenance and Operation of Marine Engines- Solved-108

1. Heat and work are:
   • Path function
   • Point function
   • System properties
   • Intensive properties
   
   
2. For reversible adiabatic process, change in entropy is:
   • Zero
   • Maximum
   • Minimum
   • Negative
   
   
3. Carnot cycle efficiency depends upon:
   • Temperature range of operation
   • Properties of the medium used
   • Condition of engine
   • Working condition
   
   
4. In a throttling process:
   • None of these
   • Heat transfer takes place
   • Internal energy of steam changes
   • Work is done by the expanding steam
   
   
5. The specific volume of steam with increase in pressure decreases:
   • Rapidly first and then slowly
   • Linearly
   • Inversely
   • None of these
   
   
6. Heating of dry steam above saturation temperature is known as:
   • Superheating
   • Enthalpy
   • Supersaturation
   • Super tempering
   
   
7. The number of flue tubes in Lancashire boiler is:
   • Two
   • Four
   • One
   • Many
   
   
8. The fire tubes in a Cochran and Scottish marine boiler are:
   • Horizontal
   • Vertical
   • Inclined
   • None of these
   
   
9. The effect of wire drawing of steam on the area of indicator diagram is to:
   • Increase
   • Decrease
   • No effect
   • None of these
   We didn’t get what it is meaning, may be you can help
   
   
10. The compressor capacity with decrease in suction temperature:
    • Increase
    • Decrease
    • May increase or decrease
    • Remains unaffected
    
    
11. Volumetric efficiency is:
    • The ratio of air actually delivered to the amount of piston displacement
    • The ratio of stroke volume to clearance volume
    • Reciprocal of compression ratio
    • Proportional to compression ratio
    
    
12. Heat transfer takes place as per:
    • Second law of thermodynamics
    • First law of thermodynamics
    • Kirchoff’s law
    • Zeroth law of thermodynamics
    
    
13. Heat is closed related with:
    • Temperature
    • Liquids
    • Enthalpy
    • Energy
    
    
14. Stefan Boltzmann law is applicable for heat transfer by:
    • Radiation
    • Conduction
    • Convection
    • None of these
    
    
15. Which of the following cycle uses air as the refrigerant?
    • BeIl-Coleman
    • Carnot
    • Stirling
    • Ericsson
    
    
16. In a refrigeration system, heat absorbed in comparison to heat rejected is
    • More
    • Same
    • Less
    • None of these
    
    
17. For obtaining high COP, the pressure range of compressor should be:
    • Low
    • High
    • Any value
    • Optimum
    
    
18. A fluid is said to be ideal if it is:
    • lnviscous and incompressible
    • Incompressible
    • lnviscous
    • Viscous and compressible
    lnviscous Non viscous
    
    
19. Liquids:
    • None of these
    • Cannot be compressed
    • Occupy definite volume
    • Are not viscous
    
    
20. Flow occurring in a pipe line when a valve is being opened is:
    • Unsteady
    • Steady
    • Vortex
    • Laminar
    
    
21. In centrifugal pump casing, the flow of water leaving the impeller is
    • Free vortex motion
    • Radial flow
    • Forced vortex
    • None of these
    
    
22. For small discharge and high heads which pump is preferred?
    • Reciprocating type
    • Radial flow type
    • Screw type
    • Centrifugal type
    
    
23. Forces are called coplanar when all of them acting on body lie in
    • One plane
    • One point
    • Different plane
    • Perpendicular plane
    
    
24. Which of the following is not a scalar quantity?
    • Acceleration
    • Time
    • Mass
    • Density
    
    
25. Moment of inertia of an area is always least with respect to:
    • Centroidal axis
    • Bottom-most axis
    • Central axis
    • None of these
    
    
26. Strength of a beam is proportional to the square of it’s:
    • Depth
    • Length
    • Width
    • Moment of inertia
    
    
27. The function of a washer is to:
    • Provide bearing area
    • Provide cushioning effect
    • Act as a locking device
    • Absorb shocks and vibration
    
    
28. Which of the following is a permanent fastening?
    • Rivets
    • Bolts
    • Keys
    • Screws
    
    
29. Aircraft body is usually fabricated by:
    • Riveting
    • Welding
    • Casting
    • Pre-casting
    
    
30. Foundry crucible is made of:
    • Graphite
    • Mild steel
    • Cast iron
    • Lead
    
    
31. Drilling is an example of:
    • Oblique cutting
    • Simple cutting
    • Orthogonal cutting
    • Uniform cutting
    
    
32. No cutting fluid is normally used while machining:
    • Mild steel
    • Stainless steel
    • Cast iron
    • Aluminium
    
    
33. Dynamometers are:
    • Force measuring devices
    • Power measuring devices
    • Energy measuring devices
    • Torque measuring devices
    Question incorrect: Dynamometers are used to measure Force, Power, Torque…. Comment below
    
    
34. Orifices meter used to measure:
    • Discharge
    • Velocity
    • Pressure
    • None of these
    
    
35. The ignition quality of diesel is measured by:
    • Cetane number
    • Octane number
    • Calorific value
    • Specific fuel consumption
    
    
36. The specific volume of a refrigerant should be:
    • Low
    • High
    • Normal
    • None of these
    
    
37. In a psychometric chart, relative humidity lines are
    • Curved
    • Horizontal and non-uniformly spaced
    • Horizontal and uniformly spaced
    • Inclined
    
    
38. The point of contr-flexure occurs only in:
    • Overhanging beams
    • Cantilever beams
    • Continuous beams
    • Simply supported beams
    
    
39. Torsional rigidity of a shaft is equal to:
    • Product of modulus of rigidity and polar moment of inertia
    • Sum of rigidity and polar moment of inertia
    • Ratio of rigidity and polar moment of inertia
    • None of these
    
    
40. The equivalent length is twice the actual length of a column with:
    • One end fixed and other end free
    • Both ends fixed
    • One end fixed and other end hinged
    • Both ends hinged
    
    
41. The locus point on the circumference of a circle, which rolls without slipping on a fixed straight line is known as:
    • Cycloid
    • Involute
    • Hypo-cycloid
    • Epi-cycloid
    
    
42. The process of heating steel above upper critical temperature and then cool it in the furnace is known as:
    • Annealing
    • Normalizing
    • Tempering
    • Hardening
    
    
43. Ratio of inertia force to viscous force is:
    • Reynolds’s number
    • Mach number
    • Euler’s number
    • Froude’s number
    
    
44. If a pendulum executes one beat per second, it is called:
    • Second’s pendulum
    • Simple pendulum
    • Compound pendulum
    • None of these
    
    
45. Otto cycle consists of:
    • Two Constant volume and two adiabatic processes
    • Two constant volume and two isothermal processes
    • Two adiabatic and two constant pressure processes
    • Two adiabatic and two isothermal processes
    
    
46. Which one is not the intensive property of a thermodynamic system?
    • Total volume
    • Pressure
    • Density
    • Temperature
    
    
47. Bomb calorimeter is used to determine:
    • Calorific value of a solid or liquid fuel
    • Calorific value of a gaseous fuel
    • Viscosity of a liquid
    • None of these
    Junker's calorimeter is used to determine calorific value of a gaseous fuel
    
    
48. Moderator in a nuclear power plant is used:
    • to slow down the speed of the fast moving neutrons
    • to absorb excess neutrons
    • to protect against neutrons and gamma rays
    • to return the neutrons back into the core of the reactor
    
    
49. Which of the following is a fire tube boiler?
    • Lancashire boiler
    • Babcock and Wilcox bailer
    • Stirling boiler
    • None of these
    
    
50. Cutting ratio is defined as
    • The ratio of depth of cut to chip thickness
    • The ratio of chip velocity to the cutting speed
    • The ratio of cutting speed to chip velocity
    • The ratio of chip thickness to depth of cut
    
    
51. The act of restoring the cutting face of a grinding wheel is known as:
    • Wheel dressing
    • Wheel grading
    • Wheel facing
    • Wheel truing
    
    
52. Specific speed of a turbine is given by:
    • 
    • 
    • 
    • 
    More than one answer
    
    
53. The acceleration of a particle moving with simple harmonic motion is zero, when it is at:
    • Its mean position
    • Its extreme position
    • a point between its mean and extreme position
    • none of these
    
    
54. The nuclear energy is commonly measured in:
    • Million electron volts
    • Mega watts
    • Neutron volts
    • Electron volts
    
    
55. The formation of shock wave front in case of convergent-divergent nole takes place:
    • at throat
    • in convergent position
    • in divergent position
    • none of these
    
    
56. Whitworth quick return mechanism is an inversion of:
    • Single slider crank chain
    • Double slider crank chain
    • Four bar chain
    • Crossed slide crank chain
    
    
57. Thickness of the chip is maximum at beginning of the cut and minimum at end of the cut in case of:
    • Climb milling
    • Up milling
    • Face milling
    • Surface milling
    
    
58. Which of the following is a boiler accessory?
    • Economizer
    • Stop valve
    • Safety valve
    • Blow off cock
    
    
59. Rotameter is used for measuring:
    • Discharge of fluids
    • Density of fluids
    • Velocity of fluids
    • Viscosity of fluids
    
    
60. Hypo-eutectoid steel is a steel containing carbon:
    • equal to 0.8%
    • less than 0.8%
    • from 0.8 to 2.0%
    • none of these
    
    
61. Which GTAW tungsten electrode is used for welding copper and its alloys?
    • 2% thoriated
    • Pure tungsten
    • 1% thoriated
    • Zirconium
    
    
62. The bending moment on a section is maximum where shear force is:
    • Changing sign
    • Minimum
    • Maximum
    • Zero
    
    
63. Which one of the following is a spring loaded type governor?
    • Hartnell governor
    • Watt governor
    • Porter governor
    • Proell governor
    
    
64. In a diesel engine the fuel is ignited by:
    • Heat resulting from compressing air that is supplied for combustion on
    • Injective fuel
    • Spark plug
    • Igniter
    
    
65. If the intake air temperature of IC engine increases its efficiency will:
    • Decreases
    • Increases
    • Remained same
    • Unpredictable
    
    
66. The air fuel ratio of the petrol engine is controlled by:
    • Carburettor
    • Governor
    • Injector
    • Fuel Pump
    
    
67. Which of the following is the lightest and most volatile liquid fuel?
    • Gasoline
    • Fuel oil
    • Diesel
    • Kerosene
    
    
68. Ignition timing of a multi-cylinder petrol engine can be adjusted by:
    • Adjusting the spark plug gap
    • Rotating the crank  
    • Rotating the distributer
    • Adjusting ignition coil position
    
    
69. Breeder reactor has a conversion ratio of:
    • More than unity
    • Zero
    • Less than unity
    • Unity
    
    
70. In nuclear fission each neutron that cause fission releases:
    • More than one new neutron
    • No new neutron
    • At least one new neutron
    • Many fold neutron
    
    
71. Super-heated steam generated in following reactor
    • Gas cooled
    • Boiling water
    • Pressurized water
    • None of these
    
    
72. In boiling water reactor, moderator is
    • Cooled itself
    • Graphite rod
    • Ferrite rod
    • Blanket of thorium
    
    
73. Basic tool in work study is
    • Stop watch
    • Graph paper
    • Process chart
    • Planning chart
    
    
74. Job evaluation is the method of determining the:
    • Relative worth of jobs
    • Skills required by a worker
    • Contribution of a worker
    • Contribution of a job
    
    
75. Father of time study was:
    • F.B. Gilberth
    • F.W. Taylor
    • H.L. Gantt
    • R.M. Barnes
    
    
76. CPM is the:
    • Activity oriented technique
    • Time oriented technique
    • Event oriented technique
    • Target oriented technique
    
    
77. The unit of energy in SI. Unit is:
    • Joule
    • Watt
    • Joule/s
    • Joule/m
    
    
78. Superheated vapour behaves
    • Approximately as a gas
    • Exactly as gas
    • As steam
    • As ordinary vapour
    
    
79. The cutting tool in a milling machine is mounted on:
    • Arbor
    • Tool holder
    • Spindle
    • Table
    
    
80. Which is the river considered as the ‘Life-line of Goa’?
    • Mandovi
    • Teesta
    • Krishna
    • Kaveri
    
    
81. Name the only state in India that produce diamond
    • Madhya Pradesh
    • Jharkhand
    • Orissa
    • Karnataka
    
    
82. Which is the First National Park in India?
    • Corbett National Park
    • Gir National Park
    • Silent Valley National Park
    • Kassiranga National Park
    
    
83. Name the satyagarha struggle lead by sardar vallabhai patel
    • Bardoli satyagarha
    • Champaran satyagarha
    • Thebhaga satyagarha
    • Ahmmadabad satyagarha
    
    
84. Who is the leader of Arra mutiny connected with First War of independence in 1857?
    • Kunvar Singh
    • Nanasahib
    • Wajid Aliasha
    • Shah Mal
    
    
85. Who is the leader of “Desiya Grameena Thozhilurappupahathi”
    • Amartyasen
    • Ashoka Mehta
    • Jaquis Dress
    • Robert Bristo
    
    
86. What was the project started at the time of 12th five year plan to ’strengthen Panchyathi Raj?
    • Rajiv Gandhi panchayath Sashaktikaran Abhiyan
    • Deendayal Upadhyaya Gramina Jyothi Yojana
    • Rajiv Gandhi Gram Vidyutikaran Yojana
    • Pradhan Manthri Adarsh Gram Yojana
    
    
87. Which is the first model fisheries tourist village in India?
    • Kumbalangi
    • Purakkad
    • Neendakara
    • Beppur
    
    
88. Which is the first total solar airport in the Wor1d?
    • Cochi
    • Doha
    • Dubai
    • Mumbai
    
    
89. In which social reformer known as Morning Star of Renaissance in Kerala
    • Sri Narayana Guru
    • Ayynkali
    • Vaikunda Swami
    • Brahmanandha Sivavogi
    
    
90. Where is “Teendal Palaka” struggle conducted?
    • Vaikkam
    • Vengannoor
    • Paliyam
    • Tali
    
    
    Theendal palakas are signboard that prohibiting road usage to untouchables near temple
91. In which year VT.Bhattathirippad conducted social reforms procession connected with mixed marriage system?
    • 1924
    • 1968
    • 1936
    • 1959
    
    
92. Which the Satyagraha lead by Dr.Naidu?
    • Shucheendram
    • Kalppathy
    • Guruvayoor
    • Kuttamkularn
    
    
93. In which social reform initiated KayaI Conference in 1913?
    • Pandit Karuppan
    • Velukutty Arayan
    • Arattupuzha Velayudhan
    • Sahodaran Ayyappn
    
    
94. Which nation is developed water aeroplane?
    • Germany
    • Britain
    • France
    • China
    misleading question
    
    
95. What is the name of the project started by Prime Minister Narendra Modi in 1 July, 2015?
    • Digital India
    • Making India
    • Swacha Bharath
    • E-Cranthi
    
    
96. Who was recently appointed as Indian Cricket team coach?
    • Anil Kumblai
    • Ravi Sastri
    • Rahul Dravid
    • RK Lakshman
    
    
97. Who is the present Labour Minister of Kerala?
    • T.P. Ramkrishnan
    • A.K. Balan
    • K. Raju
    • J. Mercikutty Amma
    
    
98. Who was the winner of National Award for Best Actress In 2015?
    • Kangana Ranaut
    • Vìdya Balan
    • Shabana Asmi
    • Aishwarya Rai
    
    
99. The first nuclear power plant in India is located at:
    • Tarapur
    • Kola
    • Kerala
    • KIapakkam
    
    
100. Which dance is known as the ‘Moving Poetry’?
     • Odissi
     • Mohiniyattam
     • Bharatanatyarn
     • Kuchippudi