Question 1

The fact that how closely the instrument reading follows the measured variables is termed as

Accepted Answer

A)  Threshold sensitivity
B)  Fidelity
C)  Precision
D)  Accuracy
E)  Hysteresis B

Question 2

The collapsible tubes for tooth pastes are made by

Accepted Answer

A)  rolling
B)  die casting
C)  extruding
D)  drawing
E)  Parting off C

Question 3

Permeability of a foundry sand is

Accepted Answer

A)  Capacity to hold moisture
B)  The ability of sand to withstand high temperatures
C)  Distribution of binder in sand
D)  Porosity to permit the escape of gases
E)  Fineness of sand D

Question 4

In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool

Accepted Answer

A)  Carbon steel
B)  Wood
C)  High speed steel
D)  Carbide
E)  Diamond

Question 5

In ball bearing steels, chromium percentage is normally in the range

Accepted Answer

A)  3 - 5 percent
B)  14 - 16 percent
C)  5 - 10 percent
D)  1 - 2 percent
E)  2 - 3 percent

Question 6

The relief angle for high speed steel tools is usually

Accepted Answer

A)  30° to 60°
B)  1° to 3°
C)  16° to 30°
D)  3° to 10°
E)  11° to 15°

Question 7

Drills are usually made of

Accepted Answer

A)  Diamonds
B)  Carbon steel
C)  High speed steel
D)  Carbides
E)  High carbon steel

Question 8

Which of the following is very hard grade?

Accepted Answer

A)  Parting off
B)  A - E
C)  G - K
D)  T - Z
E)  L - O

Question 9

A standard ground drill for use on mild steel has a point angle of

Accepted Answer

A)  80°
B)  118°
C)  30°
D)  138°
E)  60°

Question 10

Choose the incorrect statement

Accepted Answer

A)  Ductile materials in presence of fine feed and high cutting speed produce chips with built up edges
B)  Ductile material produce continuous chip
C)  Both (
A)   and (
B)  
D)  None of the above
E)  Any of the above

Question 11

The type of grains usually preferred for moulding sand are

Accepted Answer

A)  Cylindrical
B)  Hemishperical
C)  Cubical
D)  Round
E)  Sharp irregular shaped

Question 12

A flatter is made of

Accepted Answer

A)  Parting off
B)  High speed steel
C)  Mild steel
D)  High carbon steel

Question 13

In shell moulding, the dimensional accuracy that can be expected is

Accepted Answer

A)  0.001 to 0.002 mm/mm
B)  1 mm/mm
C)  0.003 to 0.005 mm/mm
D)  0.1 mm to 0.3 mm
E)  0.3 mm to 0.5 mm

Question 14

Which of the following process has the highest metal removal rate (mm33/min)

Accepted Answer

A)  Chemical machining
B)  Electron beam machining
C)  Laser beam machining
D)  Ultrasonic machining
E)  Abrasive machining

Question 15

With increasing cutting velocity total time for machining a component

Accepted Answer

A)  decreases
B)  increases
C)  first decreases and then increases
D)  None of the above
E)  All of the above

Question 16

Gun metal is an alloy containing

Accepted Answer

A)  Copper, lead, tin
B)  Copper, nickel, silver
C)  Copper, zinc, silver
D)  Copper, tin, zinc
E)  Copper, tin, silver

Question 17

Zinc chloride finds application in

Accepted Answer

A)  Soft soldering
B)  Post weld cleaning
C)  Thermit welding
D)  TIG welding
E)  Brazing

Question 18

The chips formed during broaching of steel are

Accepted Answer

A)  closed spirals
B)  fragments
C)  splinters
D)  Parting off
E)  snarl

Question 19

During oxyacetylene flame cutting, the metal is cut due to

Accepted Answer

A)  Reduction process
B)  Molecular transfer
C)  Intensive oxidation
D)  Evaporation of metal
E)  Burning of metal

Question 20

Stellite is a non-ferrous cast alloy containing

Accepted Answer

A)  Nickel, cobalt and chromium
B)  Tungsten, chromium and cobalt
C)  Molybdenum and vanadium
D)  Cobalt and manganese
E)  Nickel, lead and zinc

Exam 14: Machining Processes, Techniques and Tools