Question 1

Core chaplet is

Accepted Answer

A) used to provide a supprt to the core 
B) a surface coating on core so that core material does not fuse with the casting 
C) Parting off 
D) a core dressing operation 
E) used to make core surface smooth

Question 2

Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement

Accepted Answer

A) 75 amps 
B) 100 amps 
C) 125 amps 
D) 130 amps 
E) 150 amps

Question 3

The equal percentage characteristic of a valve is

Accepted Answer

A) Uniform flow rate 
B) Flow rate proportional to valve lift 
C) Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred 
D) Percentage increase in flow is equal to the percentage increase in lift 
E) The flow rate before the plug movement is equal to the flow rate after the movement

Question 4

Panes are used

Accepted Answer

A) Make the timber surfaces uniform and smooth 
B) Making holes in the Timber piece 
C) Chamfering the edges 
D) Parting off 
E) Measure the dimensions

Question 5

Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available?

Accepted Answer

A) 6 mm 
B) 4.5 mm 
C) 1.5 mm 
D) 8 mm 
E) 3 mm

Question 6

Which of the following process provides continuous welds between two sheets?

Accepted Answer

A) Projection welding 
B) Spot welding 
C) Seam welding 
D) All of the above 
E) Parting off

Question 7

Which one of the following methods be used for turning internal tapers only?

Accepted Answer

A) Taper attachment 
B) Reamer 
C) Form tool 
D) Compound rest 
E) Tailstock offset

Question 8

The surface accuracy of slip gauges is of the order of

Accepted Answer

A) 0.02 
B) 0.0002 
C) 0.002 
D) 0.2 
E) 0.00002

Question 9

Carbon content of grey iron is generally

Accepted Answer

A) 1 - 2 percent 
B) 3-3.5 percent 
C) 2.5-3 percent 
D) 4.5 percent 
E) 2-2.5 percent

Question 10

Specific temperature for the international Prototype metre is

Accepted Answer

A) Atmospheric 
B) Melting point of ice 
C) 0°F 
D) 0°K 
E) 0°C

Question 11

Which of the following material is cut at the lowest cutting speed?

Accepted Answer

A) Aluminium 
B) Brass 
C) Mild steel 
D) Copper 
E) High carbon steel

Question 12

When silicon is added in the cast iron 13-17 percent is given an alloy which is

Accepted Answer

A) It is not possible to have such high percentage of silicon 
B) Very soft 
C) Easily machinable 
D) Acid and corrosion resistant 
E) Powder casted

Question 13

Tumbling is done to

Accepted Answer

A) To plate the surface 
B) Clean the surface of small parts 
C) To break the material into pieces 
D) Stress relieve the components 
E) Get surface finish

Question 14

Which machine can be used for grinding the ball bearing outer races

Accepted Answer

A) Surface grinding machine 
B) Magnetic chuck grinding machine 
C) Universal grinding machine 
D) Centreless grinding machine 
E) Cylindrical grinding machine

Question 15

Which variety of copper has the highest purity?

Accepted Answer

A) Best select copper 
B) Parting off 
C) High conductivity copper 
D) Arsenical copper 
E) Deoxidised copper

Question 16

Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose?

Accepted Answer

A) Outside caliper 
B) Odd-leg caliper 
C) Inside caliper 
D) Trammel 
E) Vernier caliper

Question 17

In machine tools normally spindle speeds vary in

Accepted Answer

A) Arithmetical progression 
B) Geometrical progression 
C) Exponential progression 
D) Logarithmic progression 
E) None of the above

Question 18

Taper gererally used in lathes now-a-days is

Accepted Answer

A) Jarno 
B) Morse 
C) Brown and sharpe 
D) None of above 
E) Parkinson

Question 19

The term CLA (Centre Line Average) is used in connection with

Accepted Answer

A) Surface hardness 
B) Stresses in a component 
C) Average speed of a gear 
D) Surface finish 
E) Sharpness of a cutting tool

Question 20

Chisels used for metal cutting are

Accepted Answer

A) Hardened 
B) Annealed 
C) Hardened and tempered 
D) Annealed, hardened and tempered 
E) None of the above

Exam 12: Manufacturing Processes: Wood Moisture, Alloyed Cast Iron, Cutting Tools, Welding