Solved Paper Electrician- Cum- Mechanic 503/2019 |118/2023 Final Answer Key

Question Paper Code: 118/2023/OL
Category Code: 503/2019
Exam: Electrician- cum- Mechanic
Date of Test 20-07-2023
Department :Medical Education

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Contents

Solved Paper Electrician- cum- Mechanic 503/2019

Question1:-What is the meaning of safety?

A:-To protect the work place
B:-Provide safe work environment
C:-Giving first aid treatment to the victim
D:-Freedom or protection from harm, danger, etc
Correct Answer:- Option-D

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Question2:-Which artificial respiration method is to be performed to the victim with
injuries in the chest, belly and mouth?

A:-Mouth to nose method
B:-Nelson;s arm lift back pressure method
C:-Mouth to mouth method
D:-Schafer’s method
Correct Answer:- Option-A

Question3:-What is the goal of the occupational health safety?
A:-To maintain discipline
B:-To provide a safe work environment
C:-To co-operate with co-workers
D:-To keep the work place neat and clean
Correct Answer:- Option-B

Question4:-Which one is the example for mechanical hazard?
A:-No fencing
B:-Wrong design
C:-Noise
D:-Vibration
Correct Answer:- Option-A

Question5:-In which category of PPE, the respiratory protective equipment will
belong?
A:-PPE 1
B:-PPE 3
C:-PPE 5
D:-PPE 7
Correct Answer:- Option-B

Question6:-Which type of safety sign is having circular shape with white colour
symbol on the blue back ground?
A:-Warning signs
B:-Mandatory signs
C:-Prohibition signs
D:-Information signs
Correct Answer:- Option-B

Question7:-What is Smothering of fire?
A:-Adding the fuel element to the fire
B:-Removing the fuel element from the fire
C:-Isolating the supply of oxygen from fire
D:-Lowering the temperature of fire by using water
Correct Answer:- Option-C

Question8:-How can the fire as wood or clothes can be extinguished by using
water?
A:-It can be passed to the middle of the fire
B:-It can be passed around the fire first and then to middle
C:-It must be sprayed on the top of the fire and then to its base
D:-It must be sprayed on the base of the fire and gradually move upwards
Correct Answer:- Option-D

Question9:-If the electric shocked victim is unconscious but is breathing, what
immediate action to be taken?
A:-Report to your higher officials
B:-Send him to doctor without first aid treatment
C:-Loosen the clothing about the neck, chest and waist
D:-Call other persons to take away from the place
Correct Answer:- Option-C

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Question10:-Which waste is used as a fuel for the Bio-gas power plant?
A:-Chemical waste
B:-Agricultural waste
C:-Waste produced from the water source
D:-Waste produced by the men and animal
Correct Answer:- Option-D

Question11:-How many number of electrons will move in one second for one
ampere current through the conductor?
A:-
B:-
C:-
D:-
Correct Answer:- Option-B

Question12:-The measure of potential difference in the insulation layer can with
stand without breaking down called as
A:-Flexibility
B:-Dielectric strength
C:-Breaking capacity
D:-Rupturing Capacity
Correct Answer:- Option-B

Question13:-How many valence electrons are in a copper atom?
A:-3
B:-4
C:-2
D:-1
Correct Answer:- Option-D

Question14:-When steady current (DC) passes through a solution of silver nitrate in
water, deposits silver at the rate of 1.118 mg per second at the cathode is called
A:-Coulomb
B:-Ampere second
C:-International Ampere
D:-Conventional Ampere
Correct Answer:- Option-C

Question15:-What is the property of good conductor?
A:-Must have low specific resistance
B:-Must have high dielectric strength
C:-Must have low tensile strength
D:-Must have low melting point
Correct Answer:- Option-A

Question16:-The process, in which the tip of the soldering iron is coated with the
solder is known as
A:-Surface soldering
B:-Applying the solder
C:-Wetting of soldering
D:-Tinning of soldering iron
Correct Answer:- Option-D

Question17:-What is the effect in resistance of the conductor, if its diameter is
doubled?
A:-Increase to two times
B:-Increase to four times
C:-Decrease to half the value
D:-Decrease to 1/4th value
Correct Answer:- Option-D

Question18:-What is the name of imaginary lines which are perpendicular to the
magnetic axis and passes through the centre of the magnet?
A:-Magnetic axis
B:-Magnetic lines
C:-Magnetic neutral axis
D:-Magnetic line of face
Correct Answer:- Option-C

Question19:-How the hard sulphation defect in lead acid battery can be rectified?
A:-Changing with new electrolyte
B:-Replacing with new electrodes
C:-By trickle charge
D:-Recharging the battery for short period at high current
Correct Answer:- Option-C

Question20:-What is the average value for voltage , if the maximum value is
?
A:-
B:-
C:-
D:-
Correct Answer:- Option-D

Question21:-For which type of fire, the foam fire extinguisher is most suitable?
A:-Class ‘A’ fires
B:-Class ‘B’ fires
C:-Class ‘C’ fires
D:-Class ‘D’ fires
Correct Answer:- Option-B

Question22:-What is the expansion of ABC in first aid treatment?
A:-Airway Bleeding Circulation
B:-Airway Breathing Carefulness
C:-Accident Breathing Carefulness
D:-Airway Breathing Circulation
Correct Answer:- Option-D

Question23:-Which device in a control panel the operations in sequential control
system?
A:-Relays
B:-Timer
C:-Control Transformer
D:-Contactor
Correct Answer:- Option-B

Question24:-B.O.P in DC Drive means
A:-Bridge Operation Panel
B:-Basic Operation program
C:-Basic Operational Panel
D:-Bridge Operator program
Correct Answer:- Option-C

Question25:-In Panel board, which device protect the motor from overload and over
heating?
A:-Rectifier
B:-Limit Switch
C:-Thermal relay
D:-Electromechanical relay
Correct Answer:- Option-C

Question26:-The Diversity Factor helps to determine
A:-Units generated
B:-Average Load
C:-Plant Capacity
D:-Average Demand
Correct Answer:- Option-C

Question27:-220KV transmission line, voltage is economical for a distance of
A:-22 KM
B:-100 KM
C:-400 KM
D:-200 KM
Correct Answer:- Option-D

Question28:-Which turbine is used for low head and large discharge?
A:-Pelton turbine
B:-Francis turbine
C:-Kaplan turbine
D:-None of the above
Correct Answer:- Option-C

Question29:-The function of moderator in a nuclear reactor is
A:-to absorb the excess of neutrons
B:-to increase the energy of the neutrons
C:-to slow down the neutrons
D:-to slow down the electrons
Correct Answer:- Option-C

Question30:-Which control system is used for Eddy current drives?
A:-Slip controller
B:-Rectifier controller
C:-AC voltage controller
D:-DC chopper controller
Correct Answer:- Option-A

Question31:-What is IGBT in VF drive?
A:-Inverter switching device
B:-DC bus switching device
C:-Rectifier switching device
D:-Field supply switching device
Correct Answer:- Option-A

Question32:-How the contacts in a contactor can be engaged for working?
A:-By mechanical setting
B:-By manual setting
C:-By using bimetallic strip to change the position
D:-By operating electromagnet to change the position
Correct Answer:- Option-D

Question33:-In a DC generator, on doubling the supply frequency, the eddy current
will
A:-Remain uneffected
B:-Become half of their former value
C:-Become four times of their former value
D:-Becomes two times of their former value
Correct Answer:- Option-C

Question34:-Brushes of a DC generator are always placed along the
A:-Geometric neutral axis
B:-Magnetic neutral axis
C:-Perpendicular to GNA
D:-Perpendicular to MNA
Correct Answer:- Option-B

Question35:-Which type of motor is used in elevators?
A:-Differentially compound motor
B:-Cumulatively compound motor
C:-Series motor
D:-Shunt motor
Correct Answer:- Option-B

Question36:-Speed control by variation of field flux result in
A:-Variable torque drive
B:-Variable power drive
C:-Constant torque drive
D:-Constant power drive
Correct Answer:- Option-D

Question37:-Armature reaction in a DC Generator increases with
A:-Supply voltage
B:-Field current
C:-Armature current
D:-Terminal voltage
Correct Answer:- Option-C

Question38:-The induction motor has lagging power factor during
A:-Starting only
B:-Running only
C:-Both starting and running
D:-At rest condition
Correct Answer:- Option-C

Question39:-The single phase series motor can operate on
A:-DC only
B:-AC only
C:-Both AC and DC
D:-None of the above
Correct Answer:- Option-C

Question40:-What is the cause for hunting effect in alternators?
A:-Running with fluctuation of speed
B:-Due to overload
C:-Due to continuous fluctuation in load
D:-Running without load
Correct Answer:- Option-C

Question41:-Which is high efficiency converter?
A:-Mercury arc rectifier
B:-Motor generator set
C:-Rotary converter
D:-SCR converter
Correct Answer:- Option-D

Question42:-Why the synchronous motor fails to run at synchronous speed?
A:-Defective pony motor
B:-Short in damper winding
C:-Insufficient excitation
D:-Open in damper winding
Correct Answer:- Option-C

Question43:-What is the characteristic of an ideal voltage amplifier with respect to
the input and output impedence?
A:-Low input and high output impedence
B:-High input and high output impedence
C:-Low input and low output impedence
D:-High input and low output impedence
Correct Answer:- Option-D

Question44:-The current flowing through each diode of a bridge rectifier is equal to
A:-Half the load current
B:-twice the load current
C:-Same as the load current
D:-Four times the load current
Correct Answer:- Option-C

Question45:-Which electronic circuit generates A.C. signal without input?
A:-Filter circuit
B:-Oscillator circuit
C:-Amplifier circuit
D:-Rectifier circuit
Correct Answer:- Option-B

Question46:-Which is a passive component?
A:-Transistor
B:-Capacitor
C:-Diode
D:-Diac
Correct Answer:- Option-B

Question47:-What is the purpose of Diac in power control circuit?
A:-As rectifier
B:-For triggering
C:-As an oscillator
D:-For amplification
Correct Answer:- Option-B

Question48:-The internal power supply units of CPU is
A:-CVT
B:-UPS
C:-SMPS
D:-Stabilizer
Correct Answer:- Option-C

Question49:-Which type of transformer does not isolate the secondary?
A:-Auto transformer
B:-Potential transformer
C:-Current transformer
D:-Distribution transformer
Correct Answer:- Option-A

Question50:-A megabyte contains
A:-1000 KB
B:-1024 KB
C:-1024 Bytes
D:-500 Bytes
Correct Answer:- Option-B

Question51:-Why the load is disconnected before the offload tap changing
operation of a transformer?
A:-To disconnect the tappings from neutral point
B:-To disconnect the moving contact of the diverter
C:-To avoid heavy sparking at the contact point
D:-To provide an electrical isolation for the windings
Correct Answer:- Option-C

Question52:-Full form of USB
A:-User Serial Bus
B:-Universal Serial Battery
C:-Universal Serial Bus
D:-Universal Storage Battery
Correct Answer:- Option-C

Question53:-Which marking media takes more time for drying?
A:-White wash
B:-Prussian Blue
C:-Copper Sulphate
D:-Cellulose laquer
Correct Answer:- Option-B

Question54:-In a flexible hacksaw blade which portion is hardened
A:-Back edge
B:-Side
C:-Teeth
D:-Pin holes
Correct Answer:- Option-C

Question55:-The point angle for chipping mild steel is
A:-55 degree
B:-60 degree
C:-45 degree
D:-65 degree
Correct Answer:- Option-A

Question56:-The range of clearance angle in a drill
A:-8 to 100 degree
B:-3 to 5 degree
C:-0 to 20 degree
D:-8 to 12 degree
Correct Answer:- Option-D

Question57:-For which purpose a reamer is used
A:-Drilling deep holes
B:-Enlarging and finishing previously drilled holes
C:-To remove burrs
D:-Thin sheet drilling
Correct Answer:- Option-B

Question58:-The least count of a vernier height gauge
A:-0.001 mm
B:-0.01 mm
C:-0.02 mm
D:-0.05 mm
Correct Answer:- Option-C

Question59:-Telescopic gauges are available in a set of
A:-7 nos
B:-8 nos
C:-5 nos
D:-2 nos
Correct Answer:- Option-C

Question60:-In a micrometer the anvil is made of
A:-Mild steel
B:-Cast iron
C:-Carbon steel
D:-Alloy steel
Correct Answer:- Option-D

Question61:-Which mechanism is used to convert the linear motion of the plunger
in a Dial test indicator
A:-Rack and pinion
B:-Screw and nut
C:-Slotted link
D:-Magnetic
Correct Answer:- Option-A

Question62:-What is the zero reading of a 25-50 cm of an outside micrometer
A:-50 mm
B:-25 mm
C:-0 mm
D:-0.01 mm
Correct Answer:- Option-B

Question63:-The angle of a V thread
A:-30 degree
B:-29 degree
C:-60 degree
D:-50 degree
Correct Answer:- Option-C

Question64:-Which types of threads are used in Lead screw of machine tools?
A:-Square thread
B:-A thread
C:-Acme thread
D:-Withworth thread
Correct Answer:- Option-C

Question65:-In single start threads
A:-Lead is double the pitch
B:-Lead and pitch are equal
C:-Lead is half the pitch
D:-Pitch is double the lead
Correct Answer:- Option-B

Question66:-Bevelling the start of existing hole is called
A:-Counter sinking
B:-Boring
C:-Counter boring
D:-Spot facing
Correct Answer:- Option-A

Question67:-The distance a drill advances into the job in one complete revolution is
known as
A:-Machine speed
B:-Cutting speed
C:-RPM
D:-Feed
Correct Answer:- Option-D

Question68:-What is the advantages of a Radial drilling machine
A:-Only small drill can be hold
B:-Spindle can be brought to any position
C:-Higher finish
D:-Coolant not required
Correct Answer:- Option-B

Question69:-Which one of the following is not the part of a Centre lathe
A:-Bed
B:-Head stock
C:-Feed rod
D:-Lead screw
Correct Answer:- Option-C

Question70:-Which materials is used to make lathe bed
A:-Cast iron
B:-Mild steel
C:-High alloy steel
D:-H S S
Correct Answer:- Option-A

Question71:-The included angle of live centre used in the lathe
A:-90 degree
B:-30 degree
C:-45 degree
D:-60 degree
Correct Answer:- Option-D

Question72:-The use of chip breaker in lathe is
A:-Align the tool
B:-Break the chips
C:-Increase tool life
D:-Unbreak the chips
Correct Answer:- Option-B

Question73:-In lathe machine face plate is held at
A:-Tool post
B:-Tail stock
C:-Lathe bed
D:-Head stock spindle
Correct Answer:- Option-D

Question74:-The size of a 3 jaw chuck is specified by
A:-Diameter of work that can be held
B:-Width of chuck
C:-Diameter of the body of chuck
D:-Size of each jaw
Correct Answer:- Option-C

Question75:-The sliding surface of the lathe bed are
A:-Annealed
B:-Case hardened
C:-Tempered
D:-Hardened
Correct Answer:- Option-B

Question76:-The method of facing to bring the work against the rotation of the
cutter is
A:-Up milling
B:-Down milling
C:-Knurling
D:-Gang milling
Correct Answer:- Option-A

Question77:-The milling cutter having teeth only on periphery?
A:-End milling
B:-Plain or slab milling
C:-Side and face milling
D:-None of these
Correct Answer:- Option-B

Question78:-The operation of dividing the circumferences of a work its equally
spaced division is
A:-Grooving
B:-Counter boring
C:-Indexing
D:-Counter sinking
Correct Answer:- Option-C

Question79:-Milling operation to produce surface on both side of a work by
mounting two side milling cutter on the same arbor is
A:-Plain milling
B:-Straddle milling
C:-End milling
D:-Angular milling
Correct Answer:- Option-B

Question80:-Helical gear can be cut on following type of milling machine?
A:-Vertical milling machine
B:-Horizontal milling machine
C:-Universal milling machine
D:-Drum type milling machine
Correct Answer:- Option-C

Question81:-Milling cutter are mounted on a part called?
A:-Arbor
B:-Machine vice
C:-Over arm
D:-Dividend head
Correct Answer:- Option-A

Question82:-The standard taper using milling machine spindle is
A:-Morse taper
B:-Jarno taper
C:-Brown and sharp
D:-Metric taper
Correct Answer:- Option-C

Question83:-The ability of a material is to be drawn wire?
A:-Malleability
B:-Toughness
C:-Ductility
D:-Brittleness
Correct Answer:- Option-C

Question84:-The method of heat treatment to reduce internal stresses of a hardend
tool is
A:-Annealing
B:-Tempering
C:-Normalising
D:-Case hardening
Correct Answer:- Option-B

Question85:-The strength of the bond is indicated by?
A:-Grit
B:-Grade
C:-Bond
D:-Structure
Correct Answer:- Option-B

Question86:-The grinding wheel used for grinding high tensil strength materials like
steel?
A:-Aluminium Oxide
B:-Silicon Carbide
C:-Diamond
D:-Quartz
Correct Answer:- Option-A

Question87:-The removing of clogs and blunt abrasive grains from a grinding wheel
is called
A:-Trueing
B:-Dressing
C:-Turning
D:-Grinding
Correct Answer:- Option-B

Question88:-In grinding wheel specification 35A54K6V9, the letter V indicates?
A:-Grit
B:-Bond
C:-Grade
D:-Structure
Correct Answer:- Option-B

Question89:-The alphabet E indicates which bond
A:-Resinoid bond
B:-Vitrified bond
C:-Rubber bond
D:-Shellac bond
Correct Answer:- Option-D

Question90:-Glazing in grinding wheel refers to
A:-Grinding wheel develops shining appearance
B:-Chips get clogged between abrasives
C:-Breakage of grinding wheel
D:-Grinding wheel inbalance
Correct Answer:- Option-A

Question91:-G04 is a code used for
A:-Linear interpolation
B:-Dwell time
C:-Work co ordinate system
D:-Incremental mode
Correct Answer:- Option-B

Question92:-Mode used in CNC to feed access manually is?
A:-Jog mode
B:-Handle mode
C:-Auto mode
D:-Edit mode
Correct Answer:- Option-A

Question93:-Function of M06 in part programming is?
A:-Spindle stop
B:-Tool change
C:-Programme end
D:-Coolant on
Correct Answer:- Option-B

Question94:-Which control system provided with feedback?
A:-Open loop
B:-Closed loop
C:-Point to point
D:-Coutouring
Correct Answer:- Option-B

Question95:-The axis moving up and down in VMC?
A:-X
B:-Y
C:-Z
D:-None of these
Correct Answer:- Option-C

Question96:-In the block G01X30ZF120S1000 F stands for?
A:-Function
B:-Feedback
C:-Feed
D:-Frequency
Correct Answer:- Option-C

Question97:-If tolerance is provided on the side of the basic dimension, it is called?
A:-Allowance
B:-Unilateral tolerance
C:-Bilateral tolerance
D:-Limit
Correct Answer:- Option-B

Question98:-The difference between the maximum and minimum sizes in
component manufacturing is?
A:-Clearance
B:-Allowance
C:-Tolerance
D:-Limit
Correct Answer:- Option-C

Question99:-The temperature at which oil catches the fire?
A:-Pour point
B:-Freezing point
C:-Flash point
D:-Fire point
Correct Answer:- Option-D

Question100:-Coolant used for machining cast iron?
A:-No coolant
B:-Kerozine
C:-Soluble oil
D:-Synthetic oil
Correct Answer:- Option-A