EASY PSC | 009/2022 - Operator - Kerala Agro Machinery Corporation Ltd.

Question 1

In linear indexing if the dividing head spindle and lead screw spindle are connected with gear ratio of 1:1 and lead screw of milling machine has a pitch 5 mm then one rotation of index crank move the table :

A

0.0125 mm

B

0.125 mm

C

1.25 mm

D

12.5 mm

Question 2

Disadvantage of CNC machine :

A

Reduced scrap and rework

B

Reduced inspection time

C

High maintenance cost

D

All of the above

Question 3

Standard marking on grinding wheel is 51-A46H5V8. The letter "H" denotes :

A

Grit

B

Bond

C

Structure

D

Grade

Question 4

In CNC turning centre, which type guide way that doesn"t affected the alignment with spindle axis by wear and tear :

A

V – bed

B

Flat - bed

C

Cylindrical

D

Both (B) and (C)

Question 5

Telescopic gauges are used to measure :

A

Holes below 12 mm

B

Shafts below 12 mm

C

Holes ranges from 12.7 mm to 152.4 mm

D

Shafts ranges from 12.7 mm to 152.4 mm

Question 6

Tolerance obtained in cylindrical grinder is:

A

0.0025 mm

B

0.025 mm

C

0.005 mm

D

0.0005 mm

Question 7

A left hand helix is to be cut if an operator standing in front of the machine facing the spindle of machine :

A

The table swiveled in a clockwise direction and spindle must be revolved in opposite direction to that of the gear on the lead screw

B

The table swiveled in anti-clockwise direction and spindle must be revolved in opposite direction to that of gear on lead screw

C

Table must be swiveled in clock wise direction and spindle and lead screw in same direction to that of gear on lead screw

D

Table swiveled in anti-clockwise direction and spindle and lead screw in same direction to that of gear on lead screw

Question 8

Ohm"s law states that :

A

V ∝ I / R

B

V ∝ R/ I

C

I ∝ R/V

D

I ∝ V / R

Question 9

Grade of grinding wheel of Hard bond refers range from :

A

A to H

B

I to P

C

Q to Z

D

H to Q

Question 10

Hydrostatic guideways in CNC means :

A

Oil lubricated slide way

B

Air bearing slide way

C

Both (A) and (B)

D

Neither (A) nor (B)

Question 11

Templates are used for :

A

Checking and marking profiles

B

Checking only

C

Measuring and checking

D

Measuring only

Question 12

In surface grinding machine, the crossfeed movement is obtained by moving of :

A

Crosswise movement of spindle head

B

Crosswise movement of saddle

C

Crosswise movement of wheel head

D

Longitudinal movement of table or wheel head

Question 13

For cutting involute rack teeth the cutter number used for required module is :

A

Cutter No: 8

B

Cutter No: 5

C

Cutter No: 2

D

Cutter No: 1

Question 14

Screw thread micrometer is used to measure :

A

Major or Outside Diameter

B

Minor Diameter

C

Effective Diameter

D

Core Diameter

Question 15

In which type of slotting machine is provided horizontal movement in addition to vertical movement :

A

Precision tool slotter

B

Die slotting machine

C

Locomotive frame slotter

D

Travelling head type

Question 16

Gears are used to connect shafts which are at an angle but not intersecting:

A

Hypoid gear

B

Mitre Gear

C

Bevel gear

D

Helical gear

Question 17

The process of tempering the steel involves :

A

Reheating above 400°C → Soaking → Rapid cooling

B

Heating 30°C – 50°C above critical Temperature → Soaking → cooling in furnace itself

C

Reheating below 400°C → Soaking → Cooling

D

Heating 30°C – 50°C above critical Temperature → Soaking → Rapid cooling

Question 18

Equation for differential indexing, if A is assumed number and N be the number of division :

A

A - N(40/ N )

B

A - N(40/ A)

C

N - A(40/ A)

D

N - A(40/ N )

Question 19

Principle behind the step up transformer is :

A

Self induction

B

Dynamic induction

C

Mutual Induction

D

Eddy current

Question 20

The code used to cancel cutter radius compensation :

A

G39

B

G40

C

G41

D

G42

Question 21

The mechanism provided on rotary movement of table of slotting machine is :

A

Hypoid gear

B

Rack and pinion

C

Mitre gear drive

D

Worm and worm wheel

Question 22

Control system in which no feedback is available :

A

Open loop

B

Closed loop

C

Short loop

D

Auto loop

Question 23

Mechanical switching device which breaks the current under abnormal condition like short circuit :

A

Relay

B

MCB

C

LVDT

D

Fuse

Question 24

For machining thin work piece which milling method is preferable :

A

Up milling

B

Conventional milling

C

Straddle milling

D

Down milling

Question 25

The projecting part of cam which impart reciprocating motion to follower :

A

Lobe

B

Lead

C

Prime circle

D

Base circle

Question 26

In angular indexing one rotation of index crank rotates the spindle :

A

360 minute

B

360°

C

40 minute

D

540 minute

Question 27

Which type of drill jig is used for drilling thin or soft job :

A

Post jig

B

Sandwich jig

C

Box jig

D

Channel jig

Question 28

Expanded form of MDI :

A

Manual Data Input

B

Machine data input

C

Main Data Input

D

Milling data input

Question 29

Material used for sintered carbide cutters :

A

Tungsten carbide

B

Cobalt

C

Titanium carbide

D

All of the above

Question 30

Letter which denotes Resinoid bond :

A

R

B

E

C

B

D

S

Question 31

Which device is used for feedback in CNC control system?

A

Control unit

B

Drive motor

C

Decoder

D

Encoder

Question 32

Example of natural abrasive :

A

Corundum

B

Emery

C

Both (A) and (B)

D

Neither (A) nor (B)

Question 33

Working depth of two mating gear, if ha = addendum height and hf = dedendum height:

A

2ha

B

2hf

C

ha + hf

D

2.125 hf

Question 34

Ability of metal to withstand shock or impact :

A

Tensile

B

Toughness

C

Rupture

D

Malleability

Question 35

In Universal milling machine the table can be swiveled in :

A

15° both direction

B

30° both direction

C

45° both direction

D

60° both direction

Question 36

Lower Critical Temperature (LCT) and Upper Critical Temperature (UCT) of eutectoid steel is :

A

LCT 723°C UCT 723°C

B

LCT 723°C UCT 800°C

C

LCT 700°C UCT 900°C

D

LCT 950°C UCT 980°C

Question 37

M code for program stop :

A

M02

B

M01

C

M00

D

M30

Question 38

Shaping of grinding wheel to make it run concentric with axis is called :

A

Dressing

B

Truing

C

Both (A) and (B)

D

Neither (A) nor (B)

Question 39

Which code is used for absolute programming?

A

G90

B

G91

C

G92

D

G40

Question 40

In electrical installation the fuse are always connected to :

A

Neutral wire

B

Earth wire

C

Live wire

D

None of these

Question 41

Wheel speed or surface speed of grinding wheel is expressed as :

A

m/sec

B

mm/sec

C

G92

D

G40

Question 42

Point to point control system are used for process like :

A

Profile milling

B

Contour milling

C

Drilling

D

Both (A) and (B)

Question 43

The slotting tool does not have :

A

Side rake

B

Top rake

C

Front clearance

D

Relief angle

Question 44

Effect of loading of grinding wheel :

A

Burning of ground surface

B

Wheel breakage

C

More heat generation

D

All of the above

Question 45

Block number in a part program is represented by :

A

B word

B

N word

C

L word

D

G word

Question 46

The element such as outside diameter, addendum, dedundum etc. in bevel gear are measured from :

A

Small end

B

Large end

C

Average of (A) and (B)

D

None of the above

Question 47

The letter which indicates the inductance :

A

L

B

I

C

K

D

R

Question 48

Longitudinal movement of slotting machine means :

A

Table is fed parallel to column

B

Table is fed perpendicular to column

C

Saddle is fed parallel to column

D

None of the above

Question 49

Meaning of grit in grinding wheel :

A

Grade

B

Structure

C

Bond

D

Grain size

Question 50

Driving mechanism used for transmission of motion at constant velocity ratio without creep and slippage :

A

Belt drive

B

Chain drive

C

Rope drive

D

Pulley and belt drive

Question 51

G70P_Q_F_; here P denotes

A

Program number

B

Pause block number

C

Part number

D

Starting block number

Question 52

Meaning of G00 in CNC part program :

A

Linear interpolation

B

Rapid traverse

C

Dwell

D

Circular interpolation

Question 53

Maximum permissible overall variation of form or position of feature :

A

Dimensional tolerance

B

Geometrical tolerance

C

Bilateral Tolerance

D

Fundamental deviation

Question 54

Preparatory codes are also called :

A

M code

B

N code

C

P code

D

G code

Question 55

Code for program reset and rewind :

A

M00

B

M02

C

M05

D

M30

Question 56

What is the expanded form of ABC in first aid?

A

Airway, Blood and circulation

B

Aspiration, Blood and Circulation

C

Airway, Breathing and circulation

D

Aspiration, Breathing and Circulation

Question 57

What is the standard colour used for identifying the Bin for the metal waste material?

A

Red

B

Blue

C

Green

D

Violet

Question 58

The "5S" Concept of methodology for work place organization arises from which country:

A

France

B

America

C

Germany

D

Japan

Question 59

Which safety practice refers, wear safety shoes or boots?

A

Road safety

B

General safety

C

Machine safety

D

Personnel safety

Question 60

Which personnel protective equipment is used to maintain a good respiration?

A

Safety glass

B

Mask

C

Gown

D

Gloves

Question 61

What is the point angle of drill for drilling cast iron?

A

120°

B

140°

C

150°

D

118°

Question 62

Files are made from which material :

A

High speed steel

B

High carbon steel

C

Cast iron

D

Low alloy steel

Question 63

What is the included angle of punch used for 8 making light punch mark needed to position dividers and name the punch?

A

60° Prick punch

B

60° Dot punch

C

30° Prick punch

D

90° Centre punch

Question 64

What is called the horizontal distance from a point on one thread form to the corresponding point on the adjacent thread measured parallel to the axis?

A

Pitch of thread

B

Crest of thread

C

Root of thread

D

Flank of thread

Question 65

What is the body material of Bench Vice?

A

Mild steel

B

Cast iron

C

Wrought iron

D

Hardened steel

Question 66

What type of work is done by Pedestal type Grinders?

A

Light duty type

B

Medium duty type

C

Heavy duty type

D

Extra heavy duty type

Question 67

The extreme permissible sizes between which the actual size is contained and between which the component is made is named as :

A

Basic size

B

Size

C

Limit of size

D

Actual size

Question 68

The difference between the maximum limit of size and minimum limit of size is named as :

A

Allowance

B

Interference

C

Tolerance

D

Clearance

Question 69

Which material is used in the manufacture of anvil of the outside micrometer?

A

High carbon steel

B

Alloy steel

C

Cast iron

D

Low carbon steel

Question 70

What is the least count of Vernier caliper in which 9 main scale divisions are divided into 10 equal parts in vernier scale?

A

0.2 mm

B

0.1 mm

C

0.02 mm

D

0.01 mm

Question 71

The cutting speed recommended for drilling brass material in meters/minutes :

A

70 to 100

B

20 to 35

C

35 to 50

D

35 to 40

Question 72

What types of tap wrench is used in restricted places?

A

Bar type tap wrench

B

T-Handled tap wrench

C

Solid type tap wrench

D

Double ended tap wrench

Question 73

Which portion of Hammer head is not hardened or left soft?

A

Face

B

Pein

C

Cheek

D

Head

Question 74

Which drilling machine is capable of drilling holes upto 12.5 mm?

A

Pillar drilling machine

B

Sensitive drilling machine

C

Column drilling machine

D

Radial drilling machine

Question 75

The operation of beveling the end of drilled hole is called :

A

Counter boring

B

Spot facing

C

Countersinking

D

Step boring

Question 76

Which mechanism in lathe machine is also called as reversing gear unit?

A

Change gear unit

B

Quick change gear box

C

Tumbler gear unit

D

Apron mechanism

Question 77

What type of taper is provided on the shank of lathe centre?

A

Jarno Taper

B

Morse taper

C

Metric taper

D

Brown and sharp taper

Question 78

What is the name of centre accommodated in main spindle sleeve?

A

Dead centre

B

Half centre

C

Revolving centre

D

Live Centre

Question 79

Which part is assembled in compound rest other than compound slide?

A

Swivel base

B

Cross slide

C

Saddle

D

Apron

Question 80

Which property of cutting tool is the amount of hardness possessed by a cutting tool at normal temperature?

A

Ductility

B

Red hardness

C

Toughness

D

Cold hardness

Question 81

Which part of the lathe is locked while cutting taper by form tool method?

A

Compound rest

B

Carriage

C

Tail stock

D

Head stock

Question 82

Which angle of cutting tool control the geometry of chip formation?

A

Cutting edge angle

B

Clearance angle

C

Relief angle

D

Rake angle

Question 83

Which type of centre is used at the end of the job if no countersunk hole is permitted?

A

Insert type centre

B

Revolving centre

C

Female centre

D

Ball centre

Question 84

What is the name of chuck that hardened steel sleeve having slit cut partially?

A

Combination chuck

B

Collet chuck

C

Magnetic chuck

D

Hydraulic chuck

Question 85

Which mandrel is used for machining similar parts where internal diameter varies slightly?

A

Gang mandrel

B

Stepped mandrel

C

Taper shank mandrel

D

Expansion stud mandrel

Question 86

What do you mean by ATC preparation of part programming axis convention of CNC Machine?

A

Alternate tool centre

B

Automatic tool changer

C

Automatic tool checking

D

Auxiliary tool checking

Question 87

What is the meaning of open loop and closed loop in CNC Machine?

A

These both are programmable data

B

These both are two type of control system

C

These both are data collecting systems

D

These both are data storage systems

Question 88

The representation of complex 3-D geometrics of the outer shell of the product is called :

A

2-D Modeling

B

Solid modeling

C

3-D Modeling

D

Surface modeling

Question 89

What is the purpose of turret head on CNC Lathe machine?

A

It holds the work pieces

B

It hold the cutting tools

C

It support the lengthy work pieces

D

It guide the work pieces while thread cutting

Question 90

Which one of the following code is suitable for grooving operation?

A

G17

B

G18

C

G21

D

G75

Question 91

What is “T” in ISO standard for specifying tool insert TNMG 12048?

A

Diamond shaped

B

Triangular shaped

C

Square shaped

D

Rectangular shaped

Question 92

What is the clearance angle for boring bar tool used in CNC Machine?

A

5°

B

7°

C

8°

D

9°

Question 93

Which is the G-code suitable for thread cutting?

A

G–30

B

G–32

C

G–34

D

G–01

Question 94

The Control loop unit of M.C.U is always :

A

A hardware unit

B

A software unit

C

A control unit

D

A drive unit

Question 95

Point-to-point system used in CNC used for :

A

Reaming

B

Parting

C

Grooving

D

Facing

Question 96

Which chart is used to record the skill of the operator in practice?

A

Testing chart

B

Leveling chart

C

Geometric chart

D

Performance chart

Question 97

Which belong to total productive maintenance?

A

Supply defective goods to customers

B

Unscheduled maintenance

C

Producing goods without increasing product quality

D

Reduces maintenance cost

Question 98

Which maintenance records mention the date of commissioning of machine?

A

Inspection check list

B

Equipment record

C

Product manual

D

Servicing manual

Question 99

What is the use of dowel in assembly technique?

A

Accurate positioning of two or more parts

B

Securing components together

C

Eliminate the need for drilling

D

Increase the efficiency of fit

Question 100

What is the name of activity carried out to prevent the breakdown of machinery in basic maintenance?

A

Routine maintenance

B

Preventive maintenance

C

Repairing activity

D

Inspection activity