EASY PSC | Kerala PSC 055/2022 - Store Assistant Answer Key and Cutoff

Question 1

Which one of the following is not a purpose of practising safety precautions in industries?

A

Avoid accidents to self

B

Avoid accidents to fellow workers

C

Protect the equipment

D

Improves quality of products

Question 2

Name the hazard against which the personal protective equipment, 'Helmet' is used.

A

Falling objects

B

Dust particles

C

Fumes

D

High noise level

Question 3

_________ is a method of extinguishing fire by isolating it from the supply of oxygen by blanketing it with foam or sand.

A

Cooling

B

Starving

C

Smothering

D

Condensing

Question 4

Identify the unmatched pairs from the following regarding 5's' concepts for workplace organisation.
(i) Seiri – set
(ii) Seiton – sort
(iii) Seiso - Shine
(iv) Seiketsu – standardize
(v) Shitsuke - sustain

A

only i & iv

B

only i & ii

C

only iii & v

D

only iv

Question 5

In the ABC of first aid, 'B' stands for ________.

A

Baking

B

Breaking

C

Binding

D

Breathing

Question 6

Name the natural process of waste disposal, which involves breaking down the waste material into organic compounds.

A

Recycling

B

incineration

C

Composting

D

Burning

Question 7

One millimeter is equal to ______ micrometer.

A

0.001

B

1000

C

100

D

0.01

Question 8

Which of the following statements is/are true about outside caliper?
(i) Direct measuring instruments
(ii) Transfer measurement from steel rule to job
(iii) Classified according to the joints

A

All of the above (i, ii & iii)

B

only ii & iii

C

only i & ii

D

only i & iii

Question 9

What is the least count of a vernier caliper with one main scale division of 1 mm and 49 such divisions on the main scale are equally divided into 50 divisions on the vernier scale?

A

0.01 mm

B

0.001 mm

C

0.02 mm

D

0.2 mm

Question 10

Which of the following precision instrument cannot give direct reading of the size?

A

Vernier caliper

B

Outside micrometer

C

Dial caliper

D

Dial test indicator

Question 11

Identify the wrong statement/statements from the following about vernier bevel protractor:
(i) It is used for measuring angles
(ii) The accuracy is 5 minutes
(iii) Each division on the main scale represents 2 degree

A

Only i & ii

B

Only iii

C

Only ii & iii

D

All of the above (i, ii & iii)

Question 12

_______ is termed the act of joining slip gauges together, while building up to size.

A

Wringing

B

Fastening

C

Binding

D

Joining

Question 13

A sine bar is specified by ______ of the following.

A

Weight

B

Roller diameter

C

Centre distance between Rollers

D

Width

Question 14

Grade 'A' V-Blocks are made of ________ material.

A

Cast iron

B

Wrought iron

C

Mild steel

D

High quality steel

Question 15

Select the correct statement/statements from the following about an engineer's hammer:
(i) It is made of drop forged carbon steel
(ii) Slight convexity is given on the face
(iii) Pein is used for shaping and forming work
(iv) The face, pein and cheek are hardened

A

Only i & ii

B

Only iii & iv

C

Only i, ii & iv

D

Only i, ii & iii

Question 16

Which of the following is a criteria for the selection of marking media for a particular job?

A

Surface finish

B

Surface hardness

C

Material of job

D

Type of operation

Question 17

Which of the following statements is/ are not true about standard wire gauge?
(i) It is a circular metal disc
(ii) It has varying holes and slots on its circumference
(iii) Each slot size corresponds to a gauge number
(iv) As gauge number increases, diameter also increases

A

Only i

B

Only iv

C

Only ii & iii

D

Only iii & iv

Question 18

Which angle provided on the twist drill helps to prevent friction of the tool behind the cutting edge?

A

Point angle

B

Helix angle

C

Web angle

D

Clearance angle

Question 19

______ Angle plates are adjustable, so that the two surfaces are kept at an angle.

A

Plain solid type

B

Slotted type

C

Swivel type

D

Box type

Question 20

Which type of cast iron is also known as chilled cast iron?

A

White cast iron

B

Grey cast iron

C

Nodular cast iron

D

Malleable cast iron

Question 21

Which of the following statements is/are wrong about the non-ferrous metal, copper?
(i) It is a malleable and ductile metal
(ii) It is a good conductor of electricity
(iii) Galena is the ore of copper
(iv) It is a good insulator against nuclear radiation

A

Only i & ii

B

Only iv

C

Only iii & iv

D

Only ii & iii

Question 22

Which heat treatment process is employed to increase the wear resistance of steel?

A

Annealing

B

Tempering

C

Normalising

D

Hardening

Question 23

_______ is used as a reducing agent in blast furnace in the production of pig iron.

A

Limestone

B

Coke

C

Magnetite

D

Hematite

Question 24

Which of the following welding methods requires a non-consumable electrode?

A

Shielded metal arc welding

B

Gas metal arc welding

C

Gas tungsten arc welding

D

Carbon dioxide welding

Question 25

Identify the correct statement/statements about soldering fluxes.
(i) They are classified as organic and inorganic
(ii) Fluxes prevent corrosion
(iii) It helps molten solder to flow easily
(iv) It promotes oxidation

A

Only i & ii

B

Only ii & iii

C

Only i, iii, & iv

D

Only i, ii & iii

Question 26

What is the effect of current works on electroplating?

A

X-ray effect

B

Magnetic effect

C

Skin effect

D

Chemical effect

Question 27

What is the full form of BIS?

A

Bureau of Indian Standards

B

Board of Indian Standard

C

Board of International Standard

D

Bureau of International Standard

Question 28

Which is the example of coarse excess current protection?

A

MCB

B

rewireable type fuse unit

C

HRC fuse

D

MCCB

Question 29

Which is not a property of an insulator?

A

High dielectric strength

B

High mechanical strength

C

High Permittivity

D

High heat conductivity

Question 30

What is the unit of insulation resistance?

A

Ampere

B

Watts

C

Ohm

D

Megaohm

Question 31

How many numbers of electrons are there in copper atom?

A

59

B

49

C

29

D

39

Question 32

Which is the good conductor in terms of conductivity?

A

Silver

B

Brass

C

Aluminium

D

Copper

Question 33

What is the temperature value of class 'F' insulation?

A

120°C

B

155°C

C

100°C

D

85°C

Question 34

Which method is used for measuring 1 ohm to 100 kΩ range resistance?

A

Wheatstone bridge method

B

Substitution method

C

Voltmeter and Ammeter method

D

Kelvin bridge method

Question 35

What is the value of resistance in an open circuit?

A

Zero

B

Infinity

C

High

D

Low

Question 36

How many ohm is equal to one megaohm?

A

2000 kΩ

B

100 kΩ

C

1000 kΩ

D

10 kΩ

Question 37

Which one is negative temperature co-efficient material?

A

Copper

B

Mica

C

Aluminium

D

Carbon

Question 38

In a parallel circuit, the potential difference across a resistor

A

Varies

B

Sometime constant

C

Is always constant

D

Is different from applied voltage

Question 39

Ohm's law does not apply to

A

Semi conductors

B

Conductors

C

DC circuits

D

AC circuits

Question 40

Calculate the hot resistance of 200w/250v rated lamp.

A

31.25

B

3125

C

625

D

312.5

Question 41

Large value resistances are expressed in kilo ohm and megaohm. How can 2800 ohm resistor be expressed?

A

2.8 kΩ

B

2800 Ω

C

0.2800 kΩ

D

28 Ω

Question 42

The equivalent resistance of the parallel circuit is ______ than the smallest single resistance.

A

greater

B

half

C

equal

D

smaller

Question 43

What is the effect on output power with respect to temperature in solar cell?

A

No effect on change in temperature

B

Decreases with decrease in temperature

C

Decreases with increase in temperature

D

Remains same

Question 44

Which power plant is free from environmental pollution problem?

A

Nuclear power plant

B

Geothermal energy power plant

C

Thermal power plant

D

Hydro electric power plant

Question 45

In thermal power plant boiler requires _______

A

Dirty water

B

Hard water

C

Clean and soft water

D

Salt water

Question 46

Photovoltaic solar energy conversion system makes use of _______

A

Solar cell

B

Solar pond

C

Fuel cell

D

Solar collector

Question 47

Which of the following is an example of primary resources?

A

Petrol

B

Hot water

C

Steam

D

Sunlight

Question 48

Which of the following is used to control the movement of the needle in pelton wheel turbine?

A

Nozzle

B

Governor

C

Moving Blades

D

Valve spring

Question 49

Which component in a steam power plant is used to heat the feed water from flue gas?

A

Air preheater

B

Boiler

C

Economizer

D

Super heater

Question 50

What is the name of the material used for making solar cell?

A

Silicon

B

Germanium

C

Arsenic

D

Antimony

Question 51

In a four-stroke Spark Ignition engine the cam shaft runs ______

A

at the same speed as crank shaft

B

at half the speed of crank shaft

C

at twice the speed of crank shaft

D

at any speed irrespective of crank shaft speed.

Question 52

The ratio of brake power to indicated power of an I.C. engine is called _______

A

mechanical efficiency

B

thermal efficiency

C

volumetric efficiency

D

relative efficiency

Question 53

Which scavenging system has highest scavenging efficiency?

A

Uniflow scavenging

B

Loop scavenging

C

Reverse scavenging

D

Cross scavenging

Question 54

A spark energy required to initiate combustion A/F ratio 12-13:1.

A

10 millijoules

B

Below 10 millijoules

C

Above 10 millijoules

D

None of the above

Question 55

The spark plug must withstand pressures upto at least _______ bar.

A

35

B

45

C

65

D

55

Question 56

In S.I. engine the maximum power is obtained at which A/F ratio?

A

17:1

B

14:1

C

12.5:1

D

15.5:1

Question 57

The material used for pistons in highly rated engines with higher piston speed is _______

A

Cast iron

B

Aluminum alloy

C

Cast steel

D

All of the above

Question 58

The pipe that carries the prepared mixture to the engine cylinders is called as

A

Intake manifold

B

Exhaust manifold

C

Intake valve

D

Exhaust valve

Question 59

The material suitable for the belts used in agriculture equipment is ________

A

cotton

B

rubber

C

leather

D

balata gum

Question 60

What is the speed of belt used for efficient transmission of power in belt drives?

A

20 m/s – 25 m/s

B

20 m/s – 22.5 m/s

C

22.5 m/s – 25 m/s

D

20 m/s – 30 m/s

Question 61

What is the usual included angle for v belt?

A

20° – 30°

B

60° – 80°

C

40° – 60°

D

30° – 40°

Question 62

The minimum number of teeth on smaller sprocket required to smooth operation of chain drive in moderate speed is ___________

A

15

B

17

C

21

D

25

Question 63

The cone clutches became obsolete because of the following reason

A

small cone angles

B

exposure to dirt and dust

C

difficulty in disengaging

D

all of these

Question 64

A sliding bearing which can support steady loads without any relative motion between the journal and the bearing is called

A

zero film bearing

B

boundary lubricated bearing

C

hydrodynamic lubricated bearing

D

hydrostatic lubricated bearing

Question 65

Which of the following is the taper on a rectangular sunk key?

A

1 in 16

B

1 in 100

C

1 in 32

D

1 in 48

Question 66

The helix angle for single helical gears ranges from

A

10° to 15°

B

15° to 20°

C

20° to 35°

D

35° to 50°

Question 67

What is the required minimum number of teeth on the pinion in order to avoid interference for 20° stub gear system?

A

12

B

14

C

18

D

32

Question 68

According to Indian standard specifications, 100 H 6/g5 means that the

A

actual size is 100 mm

B

difference between the actual size and basic size is 100 mm

C

basic size is 100 mm

D

none of the above

Question 69

Which one of the following is the application of interference fit?

A

Wheel sets

B

Bearing bushes

C

Belt pulleys

D

Spline shafts

Question 70

Which of the following statements is true for a basic shaft?

A

lower deviation is zero

B

upper deviation is zero

C

lower and upper deviations are zero

D

none of these

Question 71

According to Indian standards, how many tolerance grades exist?

A

8

B

12

C

18

D

20

Question 72

The dimensional difference between the maximum material limits of the mating parts is known as

A

Allowance

B

Clearance

C

Fit

D

Limit

Question 73

Which one of the following is the symbol of locational clearance fit?

A

H11/c11

B

H9/d9

C

H7/g6

D

H7/h6

Question 74

The permissible variation of the size is called

A

Limits

B

Deviation

C

Tolerance

D

Fit

Question 75

When a thread is designated as M10 × 1.25, the value 10 indicates

A

Nominal diameter

B

Pitch diameter

C

Major Diameter

D

Minor Diameter

Question 76

Name the drawing instrument used for drawing small circles and arcs in ink.

A

Small bow compass

B

Small bow ink pen

C

Ink pen

D

Small bow divider

Question 77

Name the type of projection in which the projectors from an object are parallel to each other and inclined to the plane of projection.

A

Oblique projection

B

Orthographic projection

C

Isometric projection

D

Equilateral projection

Question 78

The degree by which the volume of a material is occupied by pores is indicated by the term ______

A

Voidocity

B

Moisturing

C

Porosity

D

Modulus

Question 79

The defect caused during seasoning of timber in the following is

A

Dry rot

B

Honey combing

C

Wet rot

D

Knot

Question 80

The edges formed by the intersection of plane surfaces of brick are

A

Arrises

B

Bats

C

Closer

D

Quoin

Question 81

What is the triangular upper part of a wall formed at the end of a pitched roof?

A

Hip

B

Gable

C

Valley

D

Dormer

Question 82

The type of Ashlar masonry which occupies an intermediate position between the rubble masonry and Ashlar masonry

A

Ashlar block-in-course masonry

B

Ashlar Chamferred masonry

C

Ashlar rough tooled masonry

D

Ashlar fine masonry

Question 83

The builtup covered area of building measured at floor level of any storey of a building is

A

Circular area

B

Volumetric area

C

Cubical content area

D

Plinth area

Question 84

A frontage margin or open space in front of the abutting street or road is known as

A

Abutment

B

Approach

C

Setback

D

Courtyard

Question 85

Unit of measurement of formworks of R.C.C.

A

m.

B

sq.m.

C

cu.m.

D

kg.

Question 86

If the bed level of irrigation canal is lower than the drainage, the type of CDW is known as

A

Level crossing

B

Aqueduct

C

Via-duct

D

Super passage

Question 87

When the soil pores of within the root zones of the plant are deprived of normal air circulation due to high water table, the crop land is said to be

A

Waterlogged

B

Salinated

C

Rendered

D

Eroded

Question 88

The limiting length of perpendicular offset is _____ m.

A

05

B

10

C

15

D

No limit

Question 89

Angle between the preceding line and the succeeding line is ______ angle.

A

Reflection

B

Deflection

C

Indirect

D

Direct

Question 90

The space segment of a GPS deals with

A

Control

B

Its application

C

Ground based time

D

Satellite systems

Question 91

The basic purpose of the drawing area in AutoCAD screen is

A

To provide space to prepare a drawing

B

To allow the entry of various commands

C

To pull down menus

D

To give commands

Question 92

The command used in 3D drawing to create a donut shaped solid in AutoCAD is

A

DONUT

B

SOLID

C

SHAPE

D

TORUS

Question 93

The function key used in AutoCAD for turning on or off ORTHO is

A

F 10

B

F 8

C

F 6

D

F 4

Question 94

The ratio of lateral strain to linear strain is called _________

A

Poisson's ratio

B

Primary ratio

C

Young's ratio

D

Volumetric ratio

Question 95

The unit of force in M.K.S. system

A

Newton

B

Kilogram

C

Gram

D

Joule

Question 96

Name the camber which is parabolic or elliptical in shape

A

Straight line camber

B

Parabolic camber

C

Curved camber

D

Mitred camber

Question 97

The level of the highest flood ever recorded of a river or stream is

A

OWL

B

HWL

C

MWL

D

HFL

Question 98

The operation of laying out sleepers on the compacted formation on a track is known as

A

Turn tabling

B

Traversing

C

Plate laying

D

Marshalling

Question 99

The pipe installed in the house drainage to preserve the water seal of a trap is

A

Anti-siphonage pipe

B

Vent pipe

C

Waste pipe

D

Soil pipe

Question 100

The maximum permissible temperature for domestic supply is

A

0° - 05°C

B

05° - 10°C

C

10° - 15°C

D

15° - 20°C

055/2022 - Store Assistant - Kerala State Bamboo Corporation Ltd