Junior Instructor (Pump Operator) in Industrial Training
Medium of Question :English
Date of Test : 21/11/2019
Question Code 061 /2019
PROVISIONAL ANSWER KEY
001. Second law of thermodynamics defines
(A) Heat
(B) Work
(C) Enthalpy
(D) Entropy
002. In a throttling process
(A) Volume remains constant
(B) Pressure remains constant
(C) Temperature remains constant
(D) All the three remain constant
003. Which of the following cycles has the highest efficiency?
(A) Otto cycle
(B) Carnot cycle
(C) Stirling cycle
(D) Joule cycle
004. The value of universal gas constant (Ru) is
(A) 8314 J/kgK
(B) 8.314 J/kgK
(C) 83.14 J/kgK
(D) 831.4 J/kgK
005. For a reversible adiabatic process, change in entropy is
(A) Minimum
(B) Maximum
(C) Zero
(D) Unpredictable
006. An isothermal process is governed by
(A) Charle's law
(B) Boyle's law
(C) Joule's law
(D) Gay-Lussac law
007. Which of the following processes is not associated with Diesel cycle?
(A) Constant volume
(B) Constant pressure
(C) Adiabatic
(D) Isothermal
008. Morse test is conducted only on
(A) Variable speed engine
(B) Low power engine
(C) Multi-cylinder engine
(D) Water cooled engine
009. Which of the following is the extensive property of the system?
(A) Volume
(B) Pressure
(C) Temperature
(D) Density
010. In a system, neither mass nor energy is allowed to cross the boundary of the system which is known as
(A) Isentropic system
(B) Isolated system
(C) Isothermal system
(D) Closed system
011. Unit of refrigeration is expressed in
(A) Kilo joule
(B) Kilo watt
(C) Ton
(D) Kilo pascal
012. Which part of the vapour compression refrigeration cycle produces the refrigeration effect?
(A) Compressor
(B) Condenser
(C) Evaporator
(D) None of the above
013. The wet bulb temperature is a measure of
(A) Relative humidity
(B) Absolute humidity
(C) Specific humidity
(D) None of the above
014. Brine is always used as a secondary refrigerant in
(A) Milk chilling plants
(B) Cold storage plants
(C) Central air-conditioning plants
(D) Ice plants
015. Mass of water vapour present in 1 kg of dry air is known as
(A) Relative humidity
(B) Absolute humidity
(C) Humidity ratio
(D) Percentage humidity
016. Thermal conductivity is expressed as
(A) W/mK
(B) W/m2K
(C) W/hmK
(D) W/h2m2K
017. Stefan Boltzmann law is applicable for heat transfer by
(A) Conduction
(B) Convection
(C) Radiation
(D) Conduction and radiation combined
018. If a body transmits all the radiations incident on it, then it is known as a
(A) Black body
(B) White body
(C) Grey body
(D) Transparent body
019. Overall coefficient of heat transfer is used in case of
(A) Conduction
(B) Convection
(C) Radiation
(D) Conduction & convection
020. The heat of Sun reaches Earth according to
(A) Conduction
(B) Convection
(C) Radiation
(D) All of the above
021. Fluid is a substance which offers no resistance to change of
(A) Pressure
(B) Flow
(C) Shape
(D) Volume
022. Surface tension has the unit of
(A) N/m2
(B) N/m
(C) N
(D) Nm
023. The ratio of absolute viscosity to mass density is known as
(A) Kinematic viscosity
(B) Specific viscosity
(C) Viscosity index
(D) Coefficient of viscosity
024. The centre of gravity of the volume of the liquid displaced by an immersed body is called
(A) Meta-centre
(B) Centre of buoyancy
(C) Centre of pressure
(D) Centre of gravity
025. Manometer is used to measure
(A) Velocity of the fluid
(B) Discharge of the fluid
(C) Density of the fluid
(D) Pressure of the fluid
026. Bernoulli's equation deals with the law of conservation of
(A) Mass
(B) Momentum
(C) Energy
(D) Work
027. Maximum efficiency of transmission of power through a pipe is
(A) 100%
(B) 33.3%
(C) 50%
(D) 66.6%
028. Centrifugal pump is started with its delivery valve
(A) Kept fully closed
(B) Kept fully open
(C) Kept 50% open
(D) Irrespective of any position
029. For small discharge at high pressure, following pump is preferred
(A) Centrifugal
(B) Axial flow
(C) Mixed flow
(D) Reciprocating
030. Series operation of a centrifugal pump results in
(A) High head
(B) High discharge
(C) High speed
(D) Reduced power consumption
031. The pump to be used for pumping highly viscous fluids belongs to
(A) Centrifugal pump
(B) Plunger pump
(C) Screw pump
(D) Turbine pump
032. Slip is a term associated with
(A) Centrifugal pump
(B) Submersible pump
(C) Reciprocating pump
(D) Jet pump
033. Cavitation will take place if the pressure of a flowing fluid at any point is
(A) More than the vapour pressure of the liquid
(B) Less than the vapour pressure of the liquid
(C) Equal to the vapour pressure of the liquid
(D) None of the above
034. Air vessel in reciprocating pump is used to
(A) Smoothen flow
(B) Reduce acceleration to minimum
(C) Increase pump efficiency
(D) Increase pump head
035. Jet pumps are often used in process industry for their
(A) High efficiency
(B) Large capacity
(C) Easy maintenance
(D) None of the above
036. Which pump would you select for pumping sewage?
(A) Reciprocating pump
(B) Open impeller centrifugal pump
(C) Multistage centrifugal pump
(D) Screw pump
037. Pelton wheel turbine is
(A) Axial flow impulse turbine
(B) Inward flow impulse turbine
(C) Outward flow impulse turbine
(D) Tangential flow impule turbine
038. A draft tube is used with
(A) Impulse turbine
(B) Pelton wheel turbine
(C) Reaction turbine
(D) Axial turbine pumps
039. A material capable of absorbing large amount of energy before fracture is known as
(A) Ductility
(B) Toughness
(C) Resilience
(D) Plasticity
040. The ratio of direct stress to volumetric strain is known as
(A) Bulk modulus
(B) Modulus of rigidity
(C) Poisson's ratio
(D) Modulus of elasticity
041. When a close coiled spring is subjected to axial load, its axial deflection is directly proportional to
(A) Diameter of the wire
(B) Modulus of rigidity of the spring material
(C) Modulus of elasticity of the spring material
(D) Mean radius of the coil of the spring
042. The ratio of limiting friction to normal reaction between two bodies
(A) Static friction
(B) Dynamic friction
(C) Coefficient of friction
(D) Limiting friction
043. Moment of inertia of an area is always least with respect to
(A) Bottom-most axis
(B) Radius of gyration
(C) Central axis
(D) Centroidal axis
044. A cantilever beam of length 'I' carries a point load 'w' at the free end. The shear force diagram seems to be in the shape as
(A) A triangle
(B) A rectangle
(C) Two equal and opposite triangles
(D) Two equal and opposite rectangles
045. Strength of a beam is directly proportional to its
(A) Length
(B) Moment of inertia
(C) Depth
(D) Width
046. Hoop stress in thin walled cylinder is
(A) Compressive stress
(B) Radial stress
(C) Circumferential tensile stress
(D) Longitudinal stress
047. If d = diameter of the rivets and t = thickness of the plates to be riveted, then Unwin's formula can be expressed as
(A) d = 4√t
(B) d = 6√t
(C) d = 8√t
(D) d = 2√t
048. A long column fails by
(A) Crushing
(B) Tension
(C) Shearing
(D) Buckling
049. Cam size depends upon
(A) Base circle
(B) Pitch circle
(C) Prime circle
(D) Outer circle
050. The ratio of number of teeth and pitch circle diameter is called
(A) Pitch
(B) Circular pitch
(C) Diametral pitch
(D) Module
051. The quality of a governor can be judged by its
(A) Stability
(B) Sensitivity
(C) Effort and power
(D) None of the above
052. In a flat belt drive, the belt is subjected to maximum tension 'T' and a centrifugal tension Tc. For maximum power transmission
(A) T = Tc
(B) T = 2Tc
(C) T = 3Tc
(D) T = 4Tc
053. Maximum efficiency of a Screw jack is a function of
(A) Angle of friction
(B) Load lifted
(C) Helix angle
(D) Effort
054. Pure iron is the structure of
(A) Ferrite
(B) Pearlite
(C) Austenite
(D) Ferrite and pearlite
055. The crystal structure of a gamma iron is
(A) BCC
(B) FCC
(C) HCP
(D) Cubic structure
056. Cast iron is characterised by minimum of following percentage of carbon
(A) 0.2%
(B) 0.8%
(C) 1.3%
(D) 2%
057. Balls for ball bearings are made of
(A) Cast iron
(B) Mild steel
(C) Stainless steel
(D) Carbon-chrome steel
058. Which of the following is used for bearing liner?
(A) Babbit metal
(B) Gun metal
(C) Bronze
(D) Brass
059. The product of Coupola furnace is called
(A) Pig iron
(B) Cast iron
(C) Mild steel
(D) Wrought iron
060. The material used for coating the electrode is called
(A) Binder
(B) Slag
(C) Flux
(D) Protective layer
061. Grey cast iron is best welded by
(A) TIG Welding
(B) MIG Welding
(C) Arc Welding
(D) Oxy-acetylene Welding
062. The following welding process uses consumable electrode
(A) TIG Welding
(B) MIG Welding
(C) Thermit Welding
(D) Gas Welding
063. Which of the following is not a heat treatment process?
(A) Austempering
(B) Martempering
(C) Parkerizing
(D) Cyaniding
064. Slag inclusion in casting is a
(A) Surface defect
(B) Internal defect
(C) Crack
(D) Notch
065. Seamless tubes are made by
(A) Piercing
(B) Extrusion
(C) Cold rolling
(D) Plug rolling
066. Lathe bed is usually made of
(A) Structural steel
(B) Stainless steel
(C) Cast iron
(D) Mild steel
067. Crater wear takes place in a single point cutting tool at
(A) Flank
(B) Side rake
(C) Face
(D) Tip
068. The arbor of the milling machine is used to hold
(A) Cutting tool
(B) Spindle
(C) Work piece
(D) Mandrel
069. Basic tool in work study is
(A) Graph paper
(B) Process chart
(C) Planning chart
(D) Stop watch
070. What does symbol
imply in work study?(A) Operation
(B) Inspection
(C) Transport
(D) Storage
071. Gantt charts are used for
(A) Forecasting sales
(B) Production schedule
(C) Scheduling and Routing
(D) Linear Programming
072. Acceptance sampling is widely used in
(A) Batch production
(B) Job production
(C) Mass production
(D) All of the above
073. CPM is a technique which depends on
(A) Time
(B) Event
(C) Activity
(D) Work
074. The probability distribution of activity times in PERT follows the following distribution:
(A) Normal
(B) Beta
(C) Binomial
(D) Exponential
075. Simplex method is used for
(A) Linear programming
(B) Queuing theory
(C) Network analysis
(D) Value Engineering
076. Father of time study is
(A) H.L. Gantt
(B) F.W. Taylor
(C) F.B. Gilberth
(D) R.M. Barnes
077. ABC analysis deals with which of the following?
(A) Controlling inventory costs money
(B) Flow of material
(C) Ordering schedule of job
(D) None of the above
078. Bar charts are suitable for
(A) Large projects
(B) Major projects
(C) Minor projects
(D) None of the above
079. Lead screw with half nuts in a lathe free to rotate in both directions has
(A) Whitworth threads
(B) V-threads
(C) Buttress threads
(D) ACME threads
080. From the following, which term is connected with shaping machine?
(A) Gear cutting mechanism
(B) Quick return mechanism
(C) Lead screw mechanism
(D) Half nut mechanism
081. Heat and work are
(A) Point functions
(B) Path functions
(C) Intensive properties
(D) Extensive properties
082. A perfect gas at 27°C is heated at constant pressure till its volume is doubled. The
final temperature is
(A) 54°C
(B) 108°C
(C) 327°C
(D) 600°C
083. In an isothermal process, the internal energy of gas molecules
(A) Increases
(B) Decreases
(C) May increase or decrease
(D) Remains constant
084. The operation of forcing additional air under pressure in the engine cylinder is known as
(A) Supercharging
(B) Scavenging
(C) Turbulence
(D) Pre-ignition
085. Ignition quality of petrol is expressed by
(A) Octane number
(B) Cetane number
(C) Calorific value
(D) Self-ignition temperature
086. A two-stroke engine is usually identified by
(A) Size of flywheel
(B) Weight of engine
(C) Type of lubrication system
(D) Absence of valves
087. Gas turbine works on
(A) Carnot cycle
(B) Brayton cycle
(C) Rankine cycle
(D) Erricson cycle
088. Critical temperature is the temperature above which
(A) A gas will immediately liquefy
(B) A gas will never liquefy
(C) Water will evaporate
(D) Water will never evaporate
089. Presence of moisture in a refrigerant affects the working of
(A) Compressor
(B) Condenser
(C) Expansion valve
(D) Evaporator
090. Density of water is maximum at
(A) 0°C
(B) 0°K
(C) 100°C
(D) 4°C
091. The stress-strain relation of the Newtonian fluid is
(A) Linear
(B) Parabolic
(C) Hyperbolic
(D) Inverse type
092. Power required to drive a centrifugal pump is proportional to
(A) Speed (N)
(B) N2
(C) N3
(D) N4
093. Indicator diagram of reciprocating pump is a graph between
(A) Flow vs swept volume
(B) Pressure in cylinder vs swept volume
(C) Flow vs speed
(D) Pressure vs speed
094. Impulse turbine is used for
(A) High head
(B) Low head
(C) Medium head
(D) High flow
095. The property of a material which allows it to be drawn into small section is called
(A) Plasticity
(B) Elasticity
(C) Ductility
(D) Malleability
096. Gear box of a car utilises
(A) Simple train
(B) Complex train
(C) Epicyclic gears
(D) Compound train
097. Spring index is
(A) Indication of quality of spring
(B) Load required to produce unit deflection
(C) Its capability of storing energy
(D) Ratio of coil diameter to wire diameter
098. Pearlite is a combination of
(A) Cementite and gamma iron
(B) Ferrite and cementite
(C) Ferrite and austenite
(D) Ferrite and iron graphite
099. The most commonly used flame in gas welding is
(A) Neutral
(B) Oxidising
(C) Carburising
(D) All of the above
100. Work study is done with the help of
(A) Process chart
(B) Material handling
(C) Stop watch
(D) All of the above
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