In a centrifugal casting method

Core is made of nonferrous metal

In submerged arc welding, an arc is produced between a

Two tungsten electrodes and the work

Bare metal electrode and the work

Two tungsten electrodes and the work

Sand wash is a casting defect which

Occurs as sand patches on the upper surface of a casting

Results in a mismatching of the top and bottom parts of a casting

Results in general enlargement of the casting

Occurs near the ingates as rough lumps on the surface of a casting

Occurs as sand patches on the upper surface of a casting

Reinforcement of sand in the top part of the moulding box

Smoothing and cleaning out depressions in the mould

Moistening the sand around the edge before removing pattern

Reinforcement of sand in the top part of the moulding box

The metal is subjected to mechanical working for

Reducing original block into desired shape

Controlling the direction of flow lines

A two high rolling mill consists of two rolls which rotate

At different speeds and in the same direction

At the same speed and in the same direction

At the same speed but in opposite direction

At different speeds and in the same direction

At different speeds and in the opposite direction

The cold working of metals is carried out

Above the recrystallisation temperature

At the recrystallisation temperature

Below the recrystallisation temperature

Above the recrystallisation temperature

A basic hole is one whose

Lower and upper deviations are zero

In a cold chamber die casting machine

Melting pot is an integral part of the machine

Melting pot is separate from the machine

Melting pot is an integral part of the machine

Melting pot may have any location

Low temperature and pressure is used

During cold working process

Strength and hardness of metal increases

Close dimensional tolerance can be maintained

In shielded arc welding

Welding rod coated with slag is used

Welding rod coated with fluxing material is used

The upsetting is a process of

Reducing the cross-section of a bar

Increasing the cross-section of a bar

Reducing the cross-section of a bar

Joining the two surfaces of metal under pressure after heating

Is extensively used for making bolts and nuts

Is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work

Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface

Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part

In sheet metal work, he cutting force on the tool can be reduced by

Increasing the hardness of tool

Grinding the cutting edges sharp

Increasing the hardness of tool

Scribing block is used to

Hold the round bars during marking

Check the trueness of flat surfaces

Locate the centres of round bars

The purpose of a riser is to

Deliver the molten metal from pouring basin to gate

Deliver molten metal into the mould cavity

Act as a reservoir for the molten metal

Feed the molten metal to the casting in order to compensate for the shrinkage

Deliver the molten metal from pouring basin to gate

Notching is the operation of

Cutting a sheet of metal through part of its length and then bending the cut portion

Cutting a sheet of metal in a straight line along the length

Removal of metal to the desired shape from the edge of a plate

Cutting a sheet of metal through part of its length and then bending the cut portion

Bending a sheet of metal along a curved axis

Thermit, used in Thermit welding, is a mixture of

Charcoal, iron oxide and aluminium

The diaphragm moulding machine is used to

Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

Ram the sand harder at the back of the mould and softer on the pattern face

Produce uniform packing of sand in the mould

Give uniform sand hardness throughout the mould

The metal extrusion process is generally used for producing

Varying solid and hollow sections

Uniform solid and hollow sections

Varying solid and hollow sections

455 + Mcqs in Workshop Technology Page 9 McqOptions

401.	In a centrifugal casting method
A.	Core is made of sand
B.	Core is made of ferrous metal
C.	Core is made of nonferrous metal
D.	No core is used
Answer» E.

Discussion

402.	Blanking and piercing operations can be performed simultaneously in a
A.	Simple die
B.	Progressive die
C.	Compound die
D.	Combination die
Answer» D. Combination die

Discussion

403.	Loam sand is a mixture of
A.	30% sand and 70% clay
B.	50% sand and 50% clay
C.	70% sand and 30% clay
D.	90% sand and 10% clay
Answer» C. 70% sand and 30% clay

Discussion

404.	A gimlet is a ________ tool.
A.	Boring
B.	Marking
C.	Cutting
D.	None of these
Answer» B. Marking

Discussion

405.	In submerged arc welding, an arc is produced between a
A.	Carbon electrode and the work
B.	Metal electrode and the work
C.	Bare metal electrode and the work
D.	Two tungsten electrodes and the work
Answer» D. Two tungsten electrodes and the work

Discussion

406.	The property of sand due to which it evolves a great amount of steam and other gases is called
A.	Collapsibility
B.	Permeability
C.	Cohesiveness
D.	Adhesiveness
Answer» C. Cohesiveness

Discussion

407.	The flux commonly used in brazing is
A.	Zinc chloride
B.	Ammonium chloride
C.	Resin plus alcohol
D.	Borax
Answer» E.

Discussion

408.	Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?
A.	Drawing
B.	Extrusion
C.	Rolling
D.	Extrusion and rolling
Answer» E.

Discussion

409.	A sand employed on the faces of the pattern before moulding, is called
A.	Green sand
B.	Dry sand
C.	Loam sand
D.	Parting sand
Answer» E.

Discussion

410.	In a ________, both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram.
A.	Simple die
B.	Progressive die
C.	Combination die
D.	Compound die
Answer» D. Compound die

Discussion

411.	Sand wash is a casting defect which
A.	Results in a mismatching of the top and bottom parts of a casting
B.	Results in general enlargement of the casting
C.	Occurs near the ingates as rough lumps on the surface of a casting
D.	Occurs as sand patches on the upper surface of a casting
Answer» D. Occurs as sand patches on the upper surface of a casting

Discussion

412.	Swab is used for
A.	Smoothing and cleaning out depressions in the mould
B.	Cleaning the moulding sand
C.	Moistening the sand around the edge before removing pattern
D.	Reinforcement of sand in the top part of the moulding box
Answer» D. Reinforcement of sand in the top part of the moulding box

Discussion

413.	The metal is subjected to mechanical working for
A.	Refining grain size
B.	Reducing original block into desired shape
C.	Controlling the direction of flow lines
D.	All of these
Answer» E.

Discussion

414.	In a bilateral system of tolerance, the tolerance is allowed on
A.	One side of the actual size
B.	One side of the nominal size
C.	Both sides of the actual size
D.	Both sides of the nominal size
Answer» E.

Discussion

415.	The increase in hardness due to cold working, is called
A.	Age hardening
B.	Work hardening
C.	Induction hardening
D.	Flame hardening
Answer» C. Induction hardening

Discussion

416.	A two high rolling mill consists of two rolls which rotate
A.	At the same speed and in the same direction
B.	At the same speed but in opposite direction
C.	At different speeds and in the same direction
D.	At different speeds and in the opposite direction
Answer» C. At different speeds and in the same direction

Discussion

417.	The cold working of metals is carried out
A.	At the recrystallisation temperature
B.	Below the recrystallisation temperature
C.	Above the recrystallisation temperature
D.	At any temperature
Answer» C. Above the recrystallisation temperature

Discussion

418.	A basic hole is one whose
A.	Lower deviation is zero
B.	Upper deviation is zero
C.	Lower and upper deviations are zero
D.	None of these
Answer» B. Upper deviation is zero

Discussion

419.	The electrodes used in spot welding have a tip of
A.	Stainless steel
B.	Aluminium
C.	Copper
D.	Brass
Answer» D. Brass

Discussion

420.	When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
A.	Neutral
B.	Oxidizing
C.	Carburising
D.	None of these
Answer» D. None of these

Discussion

421.	In a cold chamber die casting machine
A.	Melting pot is separate from the machine
B.	Melting pot is an integral part of the machine
C.	Melting pot may have any location
D.	Low temperature and pressure is used
Answer» B. Melting pot is an integral part of the machine

Discussion

422.	During cold working process
A.	Grain structure is distorted
B.	Strength and hardness of metal increases
C.	Close dimensional tolerance can be maintained
D.	All of the above
Answer» E.

Discussion

423.	In shielded arc welding
A.	Large electrode is used
B.	Welding rod coated with slag is used
C.	Welding rod coated with fluxing material is used
D.	None of the above
Answer» D. None of the above

Discussion

424.	In order to check the clearance between two mating surfaces, a ________ gauge should be used.
A.	Ring
B.	Plug
C.	Feeler
D.	None of these
Answer» D. None of these

Discussion

425.	The casting method adopted for ornaments and toys of nonferrous alloys, is
A.	Permanent mould casting
B.	Slush casting
C.	Die casting
D.	Centrifugal casting
Answer» C. Die casting

Discussion

426.	The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is
A.	Outside micrometer
B.	Inside micrometer
C.	Depth gauge micrometer
D.	Vernier caliper
Answer» E.

Discussion

427.	The upsetting is a process of
A.	Increasing the cross-section of a bar
B.	Reducing the cross-section of a bar
C.	Joining the two surfaces of metal under pressure after heating
D.	Bending of a bar
Answer» B. Reducing the cross-section of a bar

Discussion

428.	Extrusion
A.	Is extensively used for making bolts and nuts
B.	Is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work
C.	Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
D.	Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
Answer» E.

Discussion

429.	The cross-section of a chisel is usually
A.	Rectangular
B.	Square
C.	Hexagonal
D.	Octagonal
Answer» E.

Discussion

430.	In sheet metal work, he cutting force on the tool can be reduced by
A.	Grinding the cutting edges sharp
B.	Increasing the hardness of tool
C.	Providing shear on tool
D.	Increasing the hardness of die
Answer» B. Increasing the hardness of tool

Discussion

431.	In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
A.	Same
B.	Less
C.	More
D.	None of these
Answer» D. None of these

Discussion

432.	The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
A.	Shearing
B.	Piercing
C.	Punching
D.	Blanking
Answer» C. Punching

Discussion

433.	Scribing block is used to
A.	Hold the round bars during marking
B.	Check the trueness of flat surfaces
C.	Locate the centres of round bars
D.	Check the surface roughness
Answer» D. Check the surface roughness

Discussion

434.	The purpose of a riser is to
A.	Deliver molten metal into the mould cavity
B.	Act as a reservoir for the molten metal
C.	Feed the molten metal to the casting in order to compensate for the shrinkage
D.	Deliver the molten metal from pouring basin to gate
Answer» D. Deliver the molten metal from pouring basin to gate

Discussion

435.	Lap joints are employed on plates having thickness
A.	Less than 3 mm
B.	5 to 10 mm
C.	12.5 mm
D.	Above 25 mm
Answer» B. 5 to 10 mm

Discussion

436.	Notching is the operation of
A.	Cutting a sheet of metal in a straight line along the length
B.	Removal of metal to the desired shape from the edge of a plate
C.	Cutting a sheet of metal through part of its length and then bending the cut portion
D.	Bending a sheet of metal along a curved axis
Answer» C. Cutting a sheet of metal through part of its length and then bending the cut portion

Discussion

437.	The welding process used in joining mild steel shanks to high speed drills, is
A.	Spot welding
B.	Seam welding
C.	Flash butt welding
D.	Upset butt welding
Answer» D. Upset butt welding

Discussion

438.	In order to deliver molten metal from pouring basin to gate, a ________ is used.
A.	Riser
B.	Sprue
C.	Core
D.	None of these
Answer» C. Core

Discussion

439.	Thermit, used in Thermit welding, is a mixture of
A.	Charcoal and iron oxide
B.	Charcoal and aluminium
C.	Iron oxide and aluminium
D.	Charcoal, iron oxide and aluminium
Answer» D. Charcoal, iron oxide and aluminium

Discussion

440.	The diaphragm moulding machine is used to
A.	Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
B.	Ram the sand harder at the back of the mould and softer on the pattern face
C.	Produce uniform packing of sand in the mould
D.	Give uniform sand hardness throughout the mould
Answer» E.

Discussion

441.	A taper provided on the pattern for its easy and clean withdrawal from the mould is known as
A.	Machining allowance
B.	Draft allowance
C.	Shrinkage allowance
D.	Distortion allowance
Answer» C. Shrinkage allowance

Discussion

442.	Acetylene gas is stored in cylinders in
A.	Solid form
B.	Gaseous form
C.	Liquid form
D.	Any one of these
Answer» D. Any one of these

Discussion

443.	The brass and bronze are welded by _________ flame.
A.	Neutral
B.	Oxidizing
C.	Carburising
D.	All of these
Answer» C. Carburising

Discussion

444.	Aluminium is the best material for making patterns because it is
A.	Light in weight
B.	Easy to work
C.	Corrosion resistant
D.	All of these
Answer» E.

Discussion

445.	A zinc diffusion process is called
A.	Galvanizing
B.	Anodizing
C.	Parkerising
D.	Sherardizing
Answer» E.

Discussion

446.	The metal extrusion process is generally used for producing
A.	Uniform solid sections
B.	Uniform hollow sections
C.	Uniform solid and hollow sections
D.	Varying solid and hollow sections
Answer» D. Varying solid and hollow sections

Discussion

447.	Cast iron and steel pipes are produced by
A.	Slush casting
B.	Investment casting
C.	True centrifugal casting
D.	Die casting
Answer» D. Die casting

Discussion

448.	In a _______, the molten metal is poured and allowed to solidify while the mould is revolving.
A.	Die casting method
B.	Slush casting method
C.	Permanent mould casting method
D.	Centrifugal casting method
Answer» E.

Discussion

449.	In a ________, two or more operations are performed simultaneously at the single stroke of the ram.
A.	Simple die
B.	Progressive die
C.	Combination die
D.	Compound die
Answer» C. Combination die

Discussion

450.	The dowels are
A.	Wooden nails
B.	Box nails
C.	Wire nails
D.	None of these
Answer» B. Box nails

Discussion

Explore topic-wise MCQs in Mechanical Engineering.

In a centrifugal casting method

Blanking and piercing operations can be performed simultaneously in a

Loam sand is a mixture of

A gimlet is a ________ tool.

In submerged arc welding, an arc is produced between a

The property of sand due to which it evolves a great amount of steam and other gases is called

The flux commonly used in brazing is

Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?

A sand employed on the faces of the pattern before moulding, is called

In a ________, both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram.

Sand wash is a casting defect which

Swab is used for

The metal is subjected to mechanical working for

In a bilateral system of tolerance, the tolerance is allowed on

The increase in hardness due to cold working, is called

A two high rolling mill consists of two rolls which rotate

The cold working of metals is carried out

A basic hole is one whose

The electrodes used in spot welding have a tip of

When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.

In a cold chamber die casting machine

During cold working process

In shielded arc welding

In order to check the clearance between two mating surfaces, a ________ gauge should be used.

The casting method adopted for ornaments and toys of nonferrous alloys, is

The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

The upsetting is a process of

Extrusion

The cross-section of a chisel is usually

In sheet metal work, he cutting force on the tool can be reduced by

In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.

The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called

Scribing block is used to

The purpose of a riser is to

Lap joints are employed on plates having thickness

Notching is the operation of

The welding process used in joining mild steel shanks to high speed drills, is

In order to deliver molten metal from pouring basin to gate, a ________ is used.

Thermit, used in Thermit welding, is a mixture of

The diaphragm moulding machine is used to

A taper provided on the pattern for its easy and clean withdrawal from the mould is known as

Acetylene gas is stored in cylinders in

The brass and bronze are welded by _________ flame.

Aluminium is the best material for making patterns because it is

A zinc diffusion process is called

The metal extrusion process is generally used for producing

Cast iron and steel pipes are produced by

In a _______, the molten metal is poured and allowed to solidify while the mould is revolving.

In a ________, two or more operations are performed simultaneously at the single stroke of the ram.

The dowels are