Assistant Crane Driver (Electrical) – Port – Category Code: 124/2017

PROVISIONAL ANSWER KEY
Question Paper Code: 17/2020/OL
Category Code: 124/2017
Exam: Assistant Crane Driver (Electrical)
Date of Test 03-11-2020
Department Port
Alphacode A
Question1:-The tool, which is used for laying large circles
A:-Trammel
B:-Jenny Caliper
C:-Divider
D:-Scriber
Correct Answer:- Option-A
Question2:-‘V’ groove of ‘V’ Block is usually
A:-60°
B:-30°
C:-120°
D:-90°
Correct Answer:- Option-D
Question3:-The point angle of centre punch is
A:-120°
B:-60°
C:-30°
D:-90°
Correct Answer:- Option-D
Question4:-‘V’ Blocks are available in grade of
A:-𝐴1 and 𝐴2
B:-A and B
C:-𝐵1 and 𝐵2
D:-0 and 1
Correct Answer:- Option-B
Question5:-The least count of Vernier Bevel Protractor is
A:-1
′
B:-10′
C:-5
′
D:-15′
Correct Answer:- Option-C
Question6:-Brass is an alloy of
A:-Copper and Tin
B:-Copper and Zinc
C:-Lead and Tin
D:-Copper and Silver
Correct Answer:- Option-B
Question7:-Galvanised iron, which is coated with
A:-Zinc
B:-Lead
C:-Tin
D:-Copper
Correct Answer:- Option-A
Question8:-Which one of the following is a part of combination set ?
A:-Stock
B:-Square head
C:-Thimble
D:-Beam
Correct Answer:- Option-B
Question9:-The size of a parallel jaw bench vice indicates
A:-Maximum opening of jaws
B:-Width of the jaw
C:-Length of the body
D:-Weight of the vice
Correct Answer:- Option-B
Question10:-The value of one micron is
A:-1 mm
B:-0.1 mm
C:-0.01 mm
D:-0.001 mm
Correct Answer:- Option-D
Question11:-‘Watt’ is the unit of
A:-Work
B:-Power
C:-Energy
D:-Force
Correct Answer:- Option-B
Question12:-The least count of a steel rule is
A:-1 mm
B:-2 mm
C:-0.5 mm
D:-0.2 mm
Correct Answer:- Option-C
Question13:-In a metric Vernier Caliper, 25 VSD is equal to 24 MSD. Then the least count will be
A:-0.01 mm
B:-0.02 mm
C:-0.03 mm
D:-0.04 mm
Correct Answer:- Option-D
Question14:-1 cubic meter is equal to
A:-1 Ltr
B:-100 Ltrs
C:-10000 Ltrs
D:-1000 Ltrs
Correct Answer:- Option-D
Question15:-Cupola furnace is used for producing
A:-Pig iron
B:-Mild steel
C:-Cast iron
D:-Stainless steel
Correct Answer:- Option-C
Question16:-Setting of Hacksaw Blade, is done
A:-To prevent breakage of blade
B:-To get straight cutting
C:-To prevent binding when penetrating into the material
D:-To avoid wearing of blade
Correct Answer:- Option-C
Question17:-A twist drill of diameter ‘d’ mm rotates with an rpm of ‘n’. Then the cutting speed of drill in m/mint is
A:- 𝜋𝑑𝑛
1000
B:- Π 𝑑𝑛
C:-𝜋𝑑
𝑛
D:- 𝜋𝑑
1000𝑛
Correct Answer:- Option-A
Question18:-Which one of the following is an artificial abrasive ?
A:-Aluminium oxide
B:-Emery
C:-Sand stone
D:-Corundum
Correct Answer:- Option-A
Question19:-The process of re-conditioning the grinding wheel to make it cut better is known as
A:-Truing
B:-Honing
C:-Dressing
D:-Reaming
Correct Answer:- Option-C
Question20:-Name the forging operation by which the length of workpiece is reduced and cross section area is increased.
A:-Up setting
B:-Drawing
C:-Bending
D:-Twisting
Correct Answer:- Option-A
Question21:-Name the property of a material by which, it can be drawn into thin wires.
A:-Malleability
B:-Hardness
C:-Stiffness
D:-Ductility
Correct Answer:- Option-D
Question22:-Carburising is a process of
A:-Normalising
B:-Case hardening
C:-Annealing
D:-Tempering
Correct Answer:- Option-B
Question23:-The process of removing metal from the surface around a drilled hole to form a seat for a bolt head or nut is
A:-Counter sinking
B:-Counter boring
C:-Spot facing
D:-Tapping
Correct Answer:- Option-C
Question24:-The tool used to remove the taper shank drill from the machine spindle is
A:-Sleeve
B:-Socket
C:-Punch
D:-Drift
Correct Answer:- Option-D
Question25:-As per BIS, a grinding wheel is specified as ’51 A 46 L 5 V 23′. The term ‘V’ denotes
A:-Type of Abrasive
B:-Type of Bond
C:-Grain size
D:-Grade
Correct Answer:- Option-B
Question26:-Which one of the following term is related to slip gauge ?
A:-Glazing
B:-Wringing
C:-Second cut
D:-Loading
Correct Answer:- Option-B
Question27:-As per Indian Standard, there are four grades of slip gauge. They are
A:-Grade 1, 2, 3, 4
B:-Grade 0, 1, 2, 3
C:-Grade A, B, C, D
D:-Grade 00, 0, 1, 2
Correct Answer:- Option-D
Question28:-The size based on which all the dimensional deviations are given
A:-Basic size
B:-Actual size
C:-Upper deviation
D:-Lower deviation
Correct Answer:- Option-A
Question29:-The size of a component is given as 25 ±0.08 _0.05 in a drawing. The tolerance of the component is

A:-0.13
B:-25.08
C:-0.03
D:-24.95
Correct Answer:- Option-A
Question30:-Which one of the following is a solid lubricant ?
A:-Grease
B:-Graphite
C:-Castor oil
D:-Lard oil
Correct Answer:- Option-B
Question31:-In a single start thread, the lead is equal to
A:-Half of pitch
B:-Double the pitch
C:-Pitch
D:-None of the above
Correct Answer:- Option-C
Question32:-The angle of acme thread is
A:-55°
B:-29°
C:-60°
D:-47°
Correct Answer:- Option-B
Question33:-Which one of the following tool angle is provided to avoid rubbing of the body of the tool with the workpiece ?
A:-Clearance angle
B:-Helix angle
C:-Rake angle
D:-Lip angle
Correct Answer:- Option-A
Question34:-For good gripping and appearance, which one of the lathe operation is performed ?
A:-Step turning
B:-Finishing
C:-Knurling
D:-Taper turning
Correct Answer:- Option-C
Question35:-TPI of a thread is 10. Then pitch is
A:-1 inch
B:-1.1 inch
C:-0.01 inch
D:-0.1 inch
Correct Answer:- Option-D
Question36:-The ‘change gears’ for cutting single start thread on a lathe is given by
A:- Pitch to be cut
Pitch of lead screw = Driver
Driven
B:-Pitch of lead screw
Pitch to be cut = Driver
Driven
C:-Depth of lead screw thread
Depth of thread to be cut = Driver
Driven
D:- Depth of thread to be cut
Depth of lead screw thread = Driver
Driven
Correct Answer:- Option-A
Question37:-A device which holds and locate a workpiece and guides the cutting tool is called
A:-Fixture
B:-Clamps
C:-Jig
D:-Vice
Correct Answer:- Option-C
Question38:-To provide protective coating on Aluminium, which one of the following is suitable ?
A:-Galvanising
B:-Cladding
C:-Anodizing
D:-Bluing
Correct Answer:- Option-C
Question39:-Vice clamps are used to
A:-Protect the serrated jaws of the vice
B:-Protect the file
C:-Hold the job firmly
D:-Protect the finished surface of the job
Correct Answer:- Option-D
Question40:-Which one of the following indicates the grade of file ?
A:-Second cut
B:-Single cut
C:-Double cut
D:-Rasp cut
Correct Answer:- Option-A
Question41:-Which of the following is an example of linear measuring instrument ?
A:-Straight edge
B:-Steel rule
C:-Spirit level
D:-Bevel protractor
Correct Answer:- Option-B
Question42:-Caliper with one leg is bent and the other leg is straight called
A:-Hermaphrodite caliper
B:-Inside caliper
C:-Outside caliper
D:-Vernier caliper
Correct Answer:- Option-A
Question43:-Any mineral body from which metal can be economically recovered is called
A:-Alloy
B:-Element
C:-Flux
D:-Ore
Correct Answer:- Option-D
Question44:-Furnace used for the production of cast iron is
A:- Blast furnace
B:-Electric furnace
C:-Cupola furnace
D:-Reverberatory furnace
Correct Answer:- Option-C
Question45:-Hand file is also known as
A:-Safe edge file
B:-Square file
C:-Flat file
D:-Needle file
Correct Answer:- Option-A
Question46:-High carbon steel contains
A:-0.15% to 0.45% carbon
B:-0.03% to 0.05% carbon
C:-0.8% to 1.5% carbon
D:-0.03% to 0.10% carbon
Correct Answer:- Option-C
Question47:-Galena is the ore of
A:-Aluminium
B:-Lead
C:-Copper
D:-Tin
Correct Answer:- Option-B
Question48:-Least count of Metric Vernier Caliper
A:-0.02 mm
B:-0.01 mm
C:-0.10 mm
D:-0.20 mm
Correct Answer:- Option-A
Question49:-Centre punch is ground to an angle of
A:-30°
B:-45°
C:-60°
D:-90°
Correct Answer:- Option-D
Question50:-In 18-4-1 H.S.S. tool, 18 represent the part of
A:-Chromium
B:-Molybdenum
C:-Tungsten
D:-Vanadium
Correct Answer:- Option-C
Question51:-Tool used for cutting internal thread into a hole
A:-Reamer
B:-Tap
C:-Die
D:-Stud extractor
Correct Answer:- Option-B
Question52:-A wedge like tool used to remove the taper shank drill from the nose of drilling machine spindle is
A:-Drill chuck key
B:-Chisel
C:-Allen key
D:-Drill drift
Correct Answer:- Option-D
Question53:-The direction of filing stroke is perpendicular to the axis of file in
A:-Straight filing
B:-Cross filing
C:-Draw filing
D:-None of these
Correct Answer:- Option-C
Question54:-The chisel used for cutting oil grooves in bearing is
A:-Round nose chisel
B:-Cross cut chisel
C:-Flat chisel
D:-Cold chisel
Correct Answer:- Option-A
Question55:-Thread usually found in screw jack
A:-V-Thread
B:-Acme thread
C:-Knuckle thread
D:-Square thread
Correct Answer:- Option-D
Question56:-A headless bolt threaded at both end is called
A:-Screw
B:-Stud
C:-Rivet
D:-Thread extractor
Correct Answer:- Option-B
Question57:-Fit adopted in cart wheel fixing
A:-Shrink fit
B:-Running fit
C:-Push fit
D:-sliding fit
Correct Answer:- Option-A
Question58:-Which file has 100 to 120 teeth per 25 mm ?
A:-Rough file
B:-Second cut file
C:-Dead smooth file
D:-Bastard file
Correct Answer:- Option-C
Question59:-Liquid carburising is also known as
A:-Nitriding
B:-Cyaniding
C:-Hardening
D:-Annealing
Correct Answer:- Option-B
Question60:-Temperature at which oil turn into steam and evaporate is called
A:-Fire point
B:-Viscosity
C:-Pour point
D:-Flash point
Correct Answer:- Option-D
Question61:-Nut used in Hacksaw frame
A:-Wing nut
B:-Cap nut
C:-Castle nut
D:-Ring nut
Correct Answer:- Option-A
Question62:-A uniform increase or decrease in diameter along the length of a cylinder is called
A:-Step cut
B:-Chamfer
C:-Thread
D:-Taper
Correct Answer:- Option-D
Question63:-Teeth of similar shapes are cut parallel to shaft in
A:-Bevel gear
B:-Spur gear
C:-Helical gear
D:-Worm gear
Correct Answer:- Option-B
Question64:-A natural abrasive is
A:-Aluminium oxide
B:-Silicon carbide
C:-Emery
D:-None of these
Correct Answer:- Option-C
Question65:-Fixtures used for
A:-Holding and locating workpiece
B:-Control the machine
C:-Guide the cutting tool
D:-Holding the workpiece and guide the cutting tool
Correct Answer:- Option-A
Question66:-The distance from a point on one thread to the corresponding point on the next thread is
A:-Lead
B:-Start
C:-Pitch
D:-Crest
Correct Answer:- Option-C
Question67:-A tin base alloy containing 88% tin, 8% antimony and 4% copper is called
A:-Gun metal
B:-Y-alloy
C:-Monel metal
D:-Babbit metal
Correct Answer:- Option-D
Question68:-When rotating a nut over a bolt, if the nut advance axially when rotating the nut in an anticlockwise direction it indicate
A:-Left hand thread
B:-Right hand thread
C:-Multi start thread
D:-Error in thread
Correct Answer:- Option-A
Question69:-In order to change the properties and characteristics of metals either heated or cooled is known as
A:-Carburising
B:-Nitriding
C:-Heat treatment
D:-Cyaniding
Correct Answer:- Option-C
Question70:-While filing, the teeth of files are clogged by particles of metal is known as
A:-Glazing
B:-Pinning
C:-Piercing
D:-Spinning
Correct Answer:- Option-B
Question71:-In which foundation bolt, one side is straight and the other is in taper
A:-Rag type foundation bolt
B:-Lewis type foundation bolt
C:-Eye type foundation bolt
D:-Cotter foundation bolt
Correct Answer:- Option-B
Question72:-The property of a metal by virtue of which they can be drawn into wires is known as
A:-Toughness
B:-Malleability
C:-Brittleness
D:-Ductility
Correct Answer:- Option-D
Question73:-The act of joining the slip gauges together while building up to size is known
A:-Wringing
B:-Honing
C:-Setting
D:-Lapping
Correct Answer:- Option-A
Question74:-The taper generally used on taper shank of drills and reamers is
A:-Jarno taper
B:-Brown and sharp taper
C:-Morse taper
D:-Metric taper
Correct Answer:- Option-C
Question75:-A neutral flame have
A:-Excess of oxygen than acetylene
B:-Equal volume of oxygen and acetylene
C:-Excess of acetylene than oxygen
D:-No oxygen
Correct Answer:- Option-B
Question76:-The process of finishing round holes by bonded abrasive stone is called
A:-Lapping
B:-Reaming
C:-Boring
D:-Honing
Correct Answer:- Option-D
Question77:-A Vernier metric micrometer shows the reading 6.214 mm. In this reading the number of Vernier scale coincide with thimble division
A:-4
B:-6
C:-21
D:-14
Correct Answer:- Option-A
Question78:-Gauge used to check the outside diameter of shaft
A:-Plug gauge
B:-Feeler gauge
C:-Snap gauge
D:-Depth gauge
Correct Answer:- Option-C
Question79:-To locate pulleys or gears on a shaft and prevent relative movement between them, we use
A:-Nuts
B:-Keys
C:-Washers
D:-Couplings
Correct Answer:- Option-B
Question80:-A hole is to be drilled in an M. S. plate with a drill of size 15 mm, R.P.M. is 700. Find the cutting speed.
A:-23 meter/minute
B:-30 meter/minute
C:-15 meter/minute
D:-33 meter/minute
Correct Answer:- Option-D
Question81:-The typical forward voltage of a yellow colour LED is
A:-2.1 V
B:-1.8 V
C:-2.2 V
D:-2.4 V
Correct Answer:- Option-A
Question82:-The light of Mercury Vapour Lamp is
A:-Redish orange
B:-Greenish
C:-Redish blue
D:-White with bluish green
Correct Answer:- Option-D
Question83:-To get pink colour in Neon sign Lamp _____________ chemical powder coated in the inner side of the tube.
A:-Cadmium silicate
B:-Zinc silicate
C:-Cadmium borate
D:-Calcium silicate
Correct Answer:- Option-C
Question84:-Drop test of an armature is used for testing
A:-Number of turns
B:-Correct resistance
C:-Short and open circuits
D:-All of the above
Correct Answer:- Option-D
Question85:-Humming sound produced by a motor is due to
A:-Low voltage
B:-Shorted field or armature winding
C:-Dirty conductor
D:-Open field conductor
Correct Answer:- Option-B
Question86:-Current sensing single phasing preventers are suitable for
A:-Constant voltage application motor
B:-Constant load motors
C:-Variable voltage application motors
D:-All of the above
Correct Answer:- Option-B
Question87:-The Terminals of a GTO are
A:-Anode, Cathode, Gate
B:-Collector, Emitter, Gate
C:-Source, Drain, Gate
D:-Collector, Base, Emitter
Correct Answer:- Option-A
Question88:-In DC generator metal graphite brushes are used for
A:-High current and high voltage application
B:-Low current and low voltage application
C:-High current and low voltage application
D:-Low current and high voltage application
Correct Answer:- Option-C
Question89:-Which of the following is not a standard accuracy class of potential transformers ?
A:-0.6
B:-0.1
C:-0.5
D:-1.0
Correct Answer:- Option-A
Question90:-In Electrician Solder the percentage of Tin and Lead is
A:-60% Lead 40% Tin
B:-40% Tin 60% Copper
C:-60% Tin 40% Lead
D:-40% Zinc 60% Tin
Correct Answer:- Option-C
Question91:-The instrument used for measuring speed is
A:-Tong Tester
B:-Tachometer
C:-Hydrometer
D:-Growler
Correct Answer:- Option-B
Question92:-The armature current in DC motor is maximum when
A:-When motor has picked up maximum speed
B:-The motor has intermediate stage
C:-The motor has just switched off
D:-The motor has just started moving
Correct Answer:- Option-D
Question93:-A series RL circuits has a R = 30 Ω and L = 40 Ω the Z is
A:-70 Ω
B:-10 Ω
C:-20 Ω
D:-50 Ω
Correct Answer:- Option-D
Question94:-The Magnetic field produced in the stater of a three phase induction motor is at
A:-Slip speed
B:-Synchronous speed
C:-Asynchronous speed
D:-Rotor speed
Correct Answer:- Option-B
Question95:-The heat proof insulating material used for heater base is
A:-Mica
B:-Glass wool
C:-Cotton
D:-Porcelain
Correct Answer:- Option-A
Question96:-A 4 Pole 1200 rpm alternator will generate emf at the frequency of
A:-25 Hz
B:-50 Hz
C:-40 Hz
D:-60 Hz
Correct Answer:- Option-C
Question97:-Conductivity of copper is approximately
A:-90%
B:-98%
C:-89%
D:-85%
Correct Answer:- Option-A
Question98:-Nichrome is an alloy of
A:-Nickel and cobalt
B:-Nickel and Carbon
C:-Nickel and chromium
D:-Nickel and copper
Correct Answer:- Option-C
Question99:-The unit of Magneto Motive Force (MMF) is
A:-Weber
B:-Henry
C:-At/Wb
D:-Ampere turns
Correct Answer:- Option-D
Question100:-The charging of a cell at high rate is called
A:-Trickle charging
B:-Boost charging
C:-Potential charging
D:-Current charging
Correct Answer:- Option-B