Pump Operator – Museum and Zoos
PROVISIONAL ANSWER KEY
Question Paper Code: 23/2023/OL
Category Code: 490/2020
Exam: Pump Operator
Medium of Question: English
Date of Test 02-02-2023
Department Museum and Zoos
Alphacode A
Question1:-The ABCs of first aid refer to the three critical things that are
A:-Air way, Breathing, Circulation
B:-Ambulance, Bed, Clinic
C:-Accident, Breathing, Critical
D:-Air way, Bed, Climate
Correct Answer:- Option-A
Question2:-_____ extinguisher should be used in order to extinguish fire due to gas and liquefied gas.
A:-Water
B:-Carbon dioxide
C:-Dry powder
D:-Foam
Correct Answer:- Option-C
Question3:-______ is the colour code for bins for waste food.
A:-Yellow
B:-Red
C:-Green
D:-Black
Correct Answer:- Option-D
Question4:-In sensitive bench drilling machine is capable of drilling holes up to ______ diameter.
A:-15 mm
B:-12.5 mm
C:-10 mm
D:-6 mm
Correct Answer:- Option-B
Question5:-_________ rivet is used in heavy structural work where the strength of rivet is very important.
A:-Snap head
B:-Conical head
C:-Pan head
D:-Countersunk head
Correct Answer:- Option-C
Question6:-Silver brazing is used for
A:-Joining electrical parts requiring high electrical conductivity
B:-Joining dissimilar metals
C:-Brazing of tungsten carbide tips
D:-All of the above
Correct Answer:- Option-D
Question7:-Which flame does not have bad effect on metals ?
A:-Carburising flame
B:-Oxidising flame
C:-Neutral flame
D:-None of the above
Correct Answer:- Option-C
Question8:-________ hoist is made with two sheaves on the upper block and one on the lower or working block.
A:-Differential hoist
B:-Spur geared hoist
C:-Gib crane
D:-Screw geared hoist
Correct Answer:- Option-A
Question9:-The portion of the broad part of the file without teeth is
A:-Tang
B:-Heel
C:-Edge
D:-Face
Correct Answer:- Option-B
Question10:-Very accurate surface plate is made of
A:-Glass
B:-Granite
C:-Steel
D:-Closed grain cast iron
Correct Answer:- Option-D
Question11:-Which part of the spring joint caliper is fulcrum roller ?
A:-Pivot
B:-Screw
C:-Spring
D:-Peg
Correct Answer:- Option-A
Question12:-Which among the following types of chisel is used to cut keyways and grooves ?
A:-Flat chisel
B:-Cross cut chisel
C:-Half round nose chisel
D:-Diamond chisel
Correct Answer:- Option-B
Question13:-Which one of the following vice is used for holding small jobs ?
A:-Pipe vice
B:-Machine vice
C:-Hand vice
D:-Pin vice
Correct Answer:- Option-C
Question14:-Which one of the following is the internal parts of bench vice ?
A:-Box nut
B:-Fixed jaw
C:-Handle
D:-Hard jaws
Correct Answer:- Option-A
Question15:-Which micrometer does not have a frame and anvil ?
A:-Outside micrometer
B:-Inside micrometer
C:-Screw thread micrometer
D:-Depth micrometer
Correct Answer:- Option-D
Question16:-Clearance between mating parts to measured by
A:-Limit gauge
B:-Feeler gauge
C:-Plug gauge
D:-Ring gauge
Correct Answer:- Option-B
Question17:-How many valance electrons are in a semi conductor ?
A:-2
B:-3
C:-4
D:-5
Correct Answer:- Option-C
Question18:-Electro Motive Force (EMF) ‘E’ can be calculated by the formula
A:-E = P.D – Voltage drop
B:-E = P.D + Voltage drop
C:-E = P.D + Voltage drop/2
D:-E = P.D + 2 times of voltage drop
Correct Answer:- Option-B
Question19:-What are the three factors essential to make a simple electric circuit ?
A:-Switch, Voltage, Fuse
B:-Current, Fuse, Conductor
C:-EMF, Current, Resistance
D:-P.D, Quantity of Electricity, Resistance
Correct Answer:- Option-C
Question20:-In shunt type ohmmeter a spring-loaded push button type switch is provided to
A:-To avoid draining of the battery during storage
B:-Switch ON and Switch Off the meter
C:-To adjust zero position of the pointer
D:-To maintain the accuracy of the measurement reading
Correct Answer:- Option-A
Question21:-6Ω resistor of 2 nos are connected in parallel across 12 V supply, calculate the branch circuit current.
A:-1 A
B:-2 A
C:-3 A
D:-4 A
Correct Answer:- Option-D
Question22:-What is the value of the resistor; if the colour code is Orange, Orange, Red, Silver ?
A:-330 ± 5%
B:-3300 ± 10%
C:-33000 ± 2%
D:-330000 ± 10%
Correct Answer:- Option-B
Question23:-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
Question24:-What is the purpose of system earthing ?
A:-To maintain the ground at zero reference potential
B:-To maintain the safety of appliance under over voltage
C:-To maintain and protect the motor when short circuit
D:-To maintain the safety of human from electric shock
Correct Answer:- Option-A
Question25:-Which device is used for short circuit protection in the thermal magnetic MCB ?
A:-Arc chamber
B:-Trip lever
C:-Switching dolly
D:-Bimetallic strip
Correct Answer:- Option-D
Question26:-What is the capacitance of a capacitor that requires 0.8 coulomb to charge it to 32 V ?
A:-0.25 Farad
B:-0.002 Farad
C:-0.025 Farad
D:-0.0025 Farad
Correct Answer:- Option-C
Question27:-Why the rotor current flows only in rotor bars, not in rotor cores ?
A:-Due to low resistance of core
B:-Due to low resistance of rotor bar
C:-Due to high resistance of core
D:-Due to high resistance of rotor bar
Correct Answer:- Option-B
Question28:-How the spark at commutator can be reduced in a DC generator ?
A:-By shifting the brushes to any position
B:-By shifting the brushes from MNA to GNA
C:-By shifting the brushes from GNA to MNA
D:-By shifting the brushes to horizontal position
Correct Answer:- Option-C
Question29:-The width of the depletion layer of a junction
A:-Decreases with light doping
B:-Increases with heavy doping
C:-Is independent of applied voltage
D:-Is increased under reverse bias
Correct Answer:- Option-D
Question30:-”While testing the PN junctions of a transistor using an ohmmeter, middle range such as R 100Ω is preferred” Which of the following statement is/are the correct reason ?
i. Ohmmeters in low range can produce excessive current
ii. Ohmmeters in high range can produce excessive voltage
iii. Ohmmeters have low accuracies at low and very high ranges
A:-Only ii and iii
B:-Only i and ii
C:-All of the above
D:-Only i and iii
Correct Answer:- Option-B
Question31:-Which of the following is most preferred type of biasing ?
A:-Voltage divider bias
B:-Emitter bias
C:-Base bias
D:-Both 1 and 3
Correct Answer:- Option-A
Question32:-Select correct applications of SCR from the following.
i. Power control
ii. Logic and digital circuit
iii. Speed control of motors
A:-Only i and ii
B:-All of the above
C:-Only ii and iii
D:-Only i and iii
Correct Answer:- Option-B
Question33:-Which of the following statement is/are correct about ”use of UJT” ?
i. Used in timing circuits only
ii. Used in oscillators circuits only
iii. Used in bistable circuits only
A:-Only ii and iii
B:-Only i and ii
C:-All of the above
D:-Only i and iii
Correct Answer:- Option-C
Question34:-What is the unit of quantity of electricity ?
A:-Coulomb
B:-Volt Ampere
C:-Ampere Hour
D:-Watts
Correct Answer:- Option-A
Question35:-What is the name of charge that gives to new battery to put into service for the first time ?
A:-Trickle charge
B:-Freshening charge
C:-Initial charge
D:-Boost charge
Correct Answer:- Option-B
Question36:-Which colour indicates fully charged condition of a lead acid battery by testing high rate discharge tester ?
A:-Red
B:-Yellow
C:-Blue
D:-Green
Correct Answer:- Option-D
Question37:-Which of the following statement is correct about hydraulic brake system ?
i. Pascal’s law is applied in hydraulic brake system
ii. Boyle’s law is applied in hydraulic brake system
iii. liquid pressure is transmitted equally in all directions
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question38:-Which of the following statement is correct ?
i. Actuator converts mechanical energy into hydraulic energy
ii. Actuator converts hydraulic energy into mechanical energy
iii. Actuator converts hydraulic power into linear force or motion
A:-Only i and ii
B:-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-B
Question39:-Unit of viscosity is
i. kgf-sec/`m^(2)`
ii. dyne-sec/`cm^(2)`
iii. Ns/`m^(2)`
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question40:-Which of the following statement is correct about a 3/2 DC valve ?
i. Three ports and two switching positions
ii. Three switching positions and two ports
iii. 3/2 DC valve can be used to control single acting hydraulic cylinders
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question41:-In single acting hydraulic cylinder, the piston and rod assembly moves in the opposite direction by
i. a spring force
ii. gravity
iii. external force
A:-Only i and ii
B:-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question42:-Which of the following statement is correct about pneumatic system ?
i. Compressor converts mechanical energy into pneumatic energy
ii. Brake chamber converts pneumatic energy into mechanical energy
iii. Compressor converts hydraulic energy into mechanical energy
A:-Only i and ii
B:-Only ii and iii
C:-None of these
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question43:-Which of the following statement is correct about Boyle’s law ?
i. Boyle’s law is the relation between pressure and volume of a gas
ii. `P_(1)` `V_(1)` = `P_(2)““V_(2) T, ` constant
iii. Boyle’s law is the relation between compression and expansion of gases
A:-Only i and ii
B:-Only ii and iii
C:-None of these
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question44:-Pneumatic actuators are output devices for conversion of energy to produce
i. Linear motion
ii. Rotary motion
iii. Apply force
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question45:-In pneumatic system FRL used for
i. To remove fine dirt particles
ii. To regulate pressure
iii. To aid lubrication
A:-Only i and ii
B:-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question46:-The function of Non-return valves is
i. Control the direction of fluid flow
ii. Allow the fluid flow in only one direction
iii. Block the flow in the other direction
A:-Only i and ii
B:-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-B
Question47:-Unit of torque is
i. kN
ii. Nm
iii. Kw
iv. kN-m
A:-Only i
B:-Only ii
C:-Only iii
D:-All of the above (i, ii, iii and iv)
Correct Answer:- Option-B
Question48:-Compression ratio of engine, r =
i. `pi/4d^(2)S`
ii.`(V_(s)+V_(c))/(V_(c))`
iii.`pi/4d^(2)LN`
iv.`(2piNT)/(60)`
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-B
Question49:-Which of the following is correct about in two stroke engines ?
The whole cycle is completed in
i. 180°
ii. 360°
iii. 540°
iv. 720°
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-B
Question50:-Four stroke petrol engines are also called as
i. Otto cycle engine
ii. Constant volume cycle engine
iii. Naturally aspirated engine
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question51:-In diesel cycle the combustion take place at
i. Constant pressure
ii. Constant volume
iii. Constant pressure and volume
A:-Only i
B:-Only ii
C:-Only iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question52:-In Otto cycle the combustion take place at
i. Constant volume
ii. Constant pressure
iii. Constant pressure and volume
A:-Only i
B:-Only ii
C:-Only iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-B
Question53:-The basic frame work of the engine is formed by
i. Cylinder head
ii. Cylinder block
iii. Crank case
iv. Oil sump
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-B
Question54:-The material used for cylinder block is
i. Grey cast iron
ii. Steel
iii. Aluminium alloy
A:-Only i and iii
B:-Only ii and iii
C:-None of these
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question55:-The material used for cylinder head is
i. Cast iron
ii. Aluminium alloy
iii. Steel
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question56:-The cylinder bores of aluminium alloy cylinder blocks are usually plated with
i. Molybdenum
ii. Brass
iii. Chromium
A:-Only i
B:-Only ii
C:-Only iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question57:-The minimum clearance between piston and valves should be
i. 1.5 mm
ii. 2 mm
iii. 2.5 mm
iv. 3 mm
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-C
Question58:-The main reason for the piston scuffing is
i. Insufficient lubrication
ii. Insufficient cooling
iii. Detonation
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question59:-The crown side of the piston smaller in diameter than the skirt end is called
i. Taper piston
ii. Wire wound piston
iii. Offset piston
iv. Cam ground piston
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-A
Question60:-Compression rings are generally made of
i. Low carbon steel
ii. Chromium
iii. Aluminium alloy
iv. Fine grained alloy cast iron
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-D
Question61:-In six-cylinder engine the angle between crank throw is
i. 90°
ii. 120°
iii. 180°
iv. 360°
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-B
Question62:-Firing order of an six cylinder engine is
i. 1-5-3-6-2-4
ii. 1-4-2-6-3-5
iii. 1-4-3-2-6-5
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question63:-The boiling point of the coolant in cooling system is raised by
i. Thermostat valve
ii. Coolant pump
iii. Pressure cap
iv. Radiator
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-C
Question64:-Radiator pressure cap contains
i. Vacuum valve
ii. Thermostat valve
iii. Pressure valve
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question65:-The operating temperature of thermostat valve is
i. 70°C
ii. 80°C
iii. 100°C
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-B
Question66:-What is the necessity of fan in cooling system ?
i. When the vehicle is moving under heavy load and at slow speed
ii. When driving up hill
iii. When the vehicle is stationary
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question67:-The fan shroud is attached to
i. Behind the radiator
ii. In front of the radiator
iii. Behind and in front of the radiator
iv. Side of the radiator
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-A
Question68:-The friction that occurs between the layers of oil film is called
i. Viscous friction
ii. Solid friction
iii. Boundary friction
A:-Only i
B:-Only ii
C:-Only iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question69:-Commonly used lubrication system in automobile is
i. Petroil system
ii. Pressure system
iii. Dry sump system
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question70:-In Petroil system, the percentage of lubricating oil mixed with petrol is
i. 2%
ii. 3%
iii. 5%
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question71:-Which types of oil pumps are commonly used in automobile ?
i. Gear pump
ii. Rotor pump
iii. Plunger pump
A:-Only i and iii
B:-Only i and ii
C:-Only ii and iii
D:-All of the above (i, ii, and iii)
Correct Answer:- Option-B
Question72:-Usually oil is changed after
i. 10000 km
ii. 11000 km
iii. 12000 km
iv. 13000 km
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-A
Question73:-_____ is an important component in selective catalytic reduction.
A:-EGR valve
B:-Diesel particulate filter
C:-Diesel exhaust fluid
D:-Canister
Correct Answer:- Option-C
Question74:-In a three-way catalytic converter ______ uses as catalyst.
A:-Cast iron
B:-Aluminium alloy
C:-Gold
D:-Platinum
Correct Answer:- Option-D
Question75:-How does a turbocharger get drive ?
A:-From exhaust gas
B:-By belt
C:-By gear
D:-From inlet gas
Correct Answer:- Option-A
Question76:-Which type of muffler produces anti noise without restricting exhaust flow ?
A:-Straight through type
B:-Electronic type
C:-Reverse flow type
D:-Baffle type
Correct Answer:- Option-B
Question77:-Which electronic device controls the engine system ?
A:-Regulator
B:-Fuse
C:-ECM
D:-Switch
Correct Answer:- Option-C
Question78:-How the quantity of fuel delivery vary in a FIP ?
A:-By delivery valve
B:-By feed pump
C:-By filter
D:-By rotating plunge
Correct Answer:- Option-D
Question79:-How can adjust an injector pressure ?
A:-By adjusting cap nut
B:-By adjusting nozzle body
C:-By adjusting nozzle valve
D:-By adjusting screw
Correct Answer:- Option-D
Question80:-Which fuel related with cetane number ?
A:-Diesel
B:-Petrol
C:-LPG
D:-CNG
Correct Answer:- Option-A
Question81:-What is the purpose of baffles in the fuel tank ?
A:-To make fuel tank rigid
B:-To minimize the slushing of fuel in the tank
C:-To make chambers in fuel tank
D:-To make fuel tank more attractive
Correct Answer:- Option-B
Question82:-The process of removing air in fuel system is called
A:-combustion
B:-compressing
C:-bleeding
D:-scavenging
Correct Answer:- Option-C
Question83:-In ___________, in the event of failure of one brake line (front or rear), the other continues to work and stops the vehicle.
A:-tandem master cylinder
B:-single barrel master cylinder
C:-centre feed master cylinder
D:-tank type master cylinder
Correct Answer:- Option-A
Question84:-ABS means
A:-Automatic Brake System
B:-Antilock Brake System
C:-Advanced Brake System
D:-Anticlockwise Brake System
Correct Answer:- Option-B
Question85:-Which type of gears are used in Sliding mesh gearbox ?
A:-Spur gears
B:-Helical gears
C:-Spiral bevel gears
D:-Worm gears
Correct Answer:- Option-A
Question86:-In constant mesh gearbox the gear is selected through
A:-spur gears
B:-dog clutch
C:-synchroniser unit
D:-worm gears
Correct Answer:- Option-B
Question87:-Which type of axle have heavy load carrying capacity ?
A:-Semi-floating axle
B:-Three quarter floating axle
C:-Fully floating axle
D:-Front axle
Correct Answer:- Option-C
Question88:-Which is the driver gear in a differential ?
A:-Sun gears
B:-Planetary gears
C:-Crown wheel
D:-Pinion
Correct Answer:- Option-D
Question89:-What is Camber angle ?
A:-Angle between the vertical line from the central point of the tyre and the central line of the tyre
B:-Angle formed by the forward or backward tilt of the steering axis from vertical, when viewed from the side of the wheel
C:-Angle between the centre line of the kingpin and the vertical line
D:-Angle in the vertical plane between the kingpin axis and the wheel centre line
Correct Answer:- Option-A
Question90:-In a conventional suspension system (leaf spring type) _________ accommodate the change in the spring length.
A:-‘U’ bolt
B:-Shackle
C:-Rear axle
D:-Front axle
Correct Answer:- Option-B
Question91:-____________ is simple in construction and light in weight.
A:-Coil spring suspension
B:-Torsion bar suspension
C:-MCPHERSON strut type suspension
D:-Rear indepentend suspension
Correct Answer:- Option-C
Question92:-__________ is widely used in a vechicles nowadays.
A:-Piston type shock absorber
B:-Vane type shock absorber
C:-Mechanical shock absorber
D:-Telescopic shock absorber
Correct Answer:- Option-D
Question93:-___________ convert the AC produced by the alternator to DC.
A:-The rotor assembly
B:-Stator assembly
C:-Diodes
D:-Current regulator
Correct Answer:- Option-C
Question94:-____________ is a most commonly used starting system drive mechanism in light vechiles.
A:-Axial drive
B:-Sliding armature drive
C:-Over-running clutch drive
D:-Bendix drive
Correct Answer:- Option-D
Question95:-What is the use of condenser in air conditioner ?
A:-Cool the refrigerant, ensuring it condenses into a liquid
B:-Compress the refrigerant
C:-Filter the refrigerant
D:-Evaporate the refrigerant
Correct Answer:- Option-A
Question96:-In MPFI system ______ is used for supplying fuel in correct ratio to cylinders.
A:-carburetor
B:-injector
C:-distributor
D:-spark plug
Correct Answer:- Option-B
Question97:-________ is used to measure the free oxygen in the exhaust gas.
A:-MAP sensor
B:-MAF sensor
C:-Lambda sensor
D:-Vehicle speed sensor
Correct Answer:- Option-C
Question98:-In an ignition system _________ prevents arcs at CB point.
A:-contact breaker
B:-ignition switch
C:-distributor
D:-condenser
Correct Answer:- Option-D
Question99:-________ opens and closes the primary circuit of the ignition coil.
A:-Distributor
B:-Ignition switch
C:-Spark plug
D:-Condenser
Correct Answer:- Option-A
Question100:-Which type of winding is generally used in automobile starting motors ?
A:-Shunt
B:-Series
C:-Compound
D:-Parallel
Correct Answer:- Option-B
