Question 1

Which one of the following is an angle measuring device?
A)Hermaphrodite caliper
B)Divider
C)Sine bar
D)Angle iron
E)Trammel

Accepted Answer

A sine bar is specifically designed for measuring angles with high precision by utilizing sine principle.

Question 2

With electronic circuits the accuracy that can be expected from scanners will lie in the range of
A)25 to 50%
B)5 to 10%
C)20 to 25%
D)10 to 17.5%
E)0.1 to 1%

Accepted Answer

The accuracy of scanners with electronic circuits can be very high, often within the range of 0.1 to 1%. This is due to the precision of electronic components and the sophisticated technology used in modern scanning devices.

Question 3

Stellite is a non-ferrous cast alloy containing
A)Nickel, cobalt and chromium
B)Tungsten, chromium and cobalt
C)Molybdenum and vanadium
D)Cobalt and manganese
E)Nickel, lead and zinc

Accepted Answer

Stellite is primarily composed of cobalt, chromium, and often tungsten, making option B the correct choice.

Question 4

A strain gauge is a
A)sensor
B)recording device
C)Parting off
D)measuring device
E)comparator

Accepted Answer

A strain gauge is a sensor that measures the strain on an object.

Question 5

Bearing lining
A)Muntz metal
B)Duralumin
C)Babbit
D)Bronze
E)Delta metal

Accepted Answer

Babbit is commonly used as a bearing lining material due to its excellent properties such as low friction, good conformability, and ability to embed dirt particles.

Question 6

The counteract the increased sulphur percentage
A)Carbon is added
B)Manganese is added
C)Phosphorous is added
D)Oxidising agents are added
E)None of the above

Accepted Answer

Manganese is added to counteract the increased sulfur percentage in steel. Manganese combines with sulfur to form manganese sulfide, which is less harmful to the steel's properties than sulfur itself. This helps in improving the steel's ductility and toughness.

Question 7

Standard taper generally used on milling machine spindles is
A)Seller's taper
B)Morse taper
C)Brown and Sharpe taper
D)Chapman taper
E)Jarno and Reed taper

Accepted Answer

The answer of Standard taper generally used on milling machine...

Question 8

C-14 steel indicates plain carbon steel containing carbon percentage
A)14
B)1.4
C)0.14
D)0.1 to 0.8
E)1 to 1.8

Accepted Answer

The answer of C-14 steel indicates plain carbon steel containing...

Question 9

The bonding of a rubber sheet with a metal is done by
A)Induction welding
B)Melting rubber in metal
C)Welding
D)High frequency dielectric heating
E)Adhesive bonding

Accepted Answer

Adhesive bonding is commonly used to bond rubber to metal, as it involves using a suitable adhesive to create a strong bond between the two different materials.

Question 10

Permeability of a foundry sand is
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

Accepted Answer

Permeability of a foundry sand refers to its porosity or the ability to allow gases to escape through it. This is crucial in casting processes to prevent defects in the final product caused by trapped gases.

Question 11

Zinc chloride finds application in
A)Soft soldering
B)Post weld cleaning
C)Thermit welding
D)TIG welding
E)Brazing

Accepted Answer

The answer of Zinc chloride finds application in
A)Soft soldering
B)Post weld...

Question 12

The surface finish obtainable in ultrasonic machining is of the order of
A)500 to 1000
B)0.2 to 0.5
C)200 to 500
D)20 to 50
E)2 to 5

Accepted Answer

Ultrasonic machining is a non-traditional machining process that uses high-frequency ultrasonic vibrations to remove material from a workpiece. The surface finish obtainable in ultrasonic machining is typically in the range of 0.2 to 0.5 micrometers.

Question 13

In a steel plant the product of a blast furnace is
A)Cast steel
B)Pig iron
C)Ingot
D)Mild steel
E)Cast iron

Accepted Answer

The product of a blast furnace is pig iron, which is the basic form of iron produced from iron ore. Pig iron contains high levels of carbon and is the primary raw material used to make steel and cast iron.

Question 14

Which of the following process has the highest metal removal rate (mm33/min)
A)Chemical machining
B)Electron beam machining
C)Laser beam machining
D)Ultrasonic machining
E)Abrasive machining

Accepted Answer

The answer of Which of the following process has the...

Question 15

The type of grains usually preferred for moulding sand are
A)Cylindrical
B)Hemishperical
C)Cubical
D)Round
E)Sharp irregular shaped

Accepted Answer

The answer of The type of grains usually preferred for...

Question 16

A drill will not cut when
A)helix pitch is small
B)lip angle is zero
C)point angle is 118°
D)helix pitch is large
E)Parting off

Accepted Answer

A drill will not cut if the lip angle is zero because the cutting edges would be parallel to the material surface, making it impossible to penetrate or remove material.

Question 17

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

Accepted Answer

Shell moulding, known for its ability to produce castings with high dimensional accuracy, typically achieves a dimensional accuracy of 0.003 to 0.005 mm/mm. This process involves creating a mold from a mixture of sand and resin that is heated and formed around a pattern, resulting in precise and detailed castings.

Question 18

The collapsible tubes for tooth pastes are made by
A)rolling
B)die casting
C)extruding
D)drawing
E)Parting off

Accepted Answer

Collapsible tubes for toothpaste and similar products are typically made using the extrusion process. This involves forcing the material (often a type of plastic or metal) through a die to create a long, hollow tube, which is then cut to length and sealed at one end. Extrusion is chosen for its ability to produce uniform, continuous shapes with precise dimensions.

Question 19

A standard ground drill for use on mild steel has a point angle of
A)80°
B)118°
C)30°
D)138°
E)60°

Accepted Answer

The standard point angle for a ground drill used on mild steel is 118°. This angle provides an effective balance between sharpness for cutting and durability for longevity.

Question 20

Ultrasonic machine is best suited for
A)Non-ferrous metal
B)Spongy materials
C)Brittle materials
D)Dielectrics
E)Amorphous solids

Accepted Answer

Ultrasonic machining is particularly effective for brittle materials, as it uses high-frequency vibrations to remove material without causing thermal damage or significant mechanical stress.

Quiz 14: Machining Processes, Techniques and Tools

Which one of the following is an angle measuring device?

With electronic circuits the accuracy that can be expected from scanners will lie in the range of

Stellite is a non-ferrous cast alloy containing

A strain gauge is a

Bearing lining

The counteract the increased sulphur percentage

Standard taper generally used on milling machine spindles is

C-14 steel indicates plain carbon steel containing carbon percentage

The bonding of a rubber sheet with a metal is done by

Permeability of a foundry sand is

Zinc chloride finds application in

The surface finish obtainable in ultrasonic machining is of the order of

In a steel plant the product of a blast furnace is

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

The type of grains usually preferred for moulding sand are

A drill will not cut when

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

The collapsible tubes for tooth pastes are made by

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

Ultrasonic machine is best suited for