During the execution of a CNC part program blockNO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion will be

ircular Interpolation − counter clockwise

ircular Interpolation − clockwise

ircular Interpolation − counter clockwise

A left hand tool on a lathe cuts most efficiently when it travels

From right to left end of the lathe bed

From left to right end of the lathe bed

From right to left end of the lathe bed

With the help of a compound slide

A right hand tool on a lathe cuts most efficiently when it travels

With the help of a compound slide

From left to right end of the lathe bed

From right to left end of the lathe bed

With the help of a compound slide

In up-cut milling the work piece is fed

At the right angle to the cutter

The tool life in case of a grinding wheel is the time

Taken for a wear of 1 mm on its diameter

Between two successive regrinds of the wheel

Taken for the wheel to be balanced

Taken between two successive wheel dressings

Taken for a wear of 1 mm on its diameter

Larger than 15° side cutting edge angle

Results in excessive stress concentration and greater heat generation

Produces chipping and decreases tool life

Results in excessive stress concentration and greater heat generation

Which of the following statement is correct about hot machining?

It requires less power than machining metals at room temperature.

The rate of tool wear is lower.

It is used for machining high strength and high temperature resistant materials.

Which of the following statement is correct about EDM machining?

It can machine hardest materials

It produces high degree of surface finish

The tool and work are never in contact with each other

Flank wear occurs mainly on the

Face of the cutting tool at a short distance from the cutting edge

Nose part, front relief face and side relief face of the cutting tool

Face of the cutting tool at a short distance from the cutting edge

Crater wear occurs mainly on the

Nose part, front relief face and side relief face of the cutting tool

Face of the cutting tool at a short distance from the cutting edge only

For generating a Coon’s surface we require

Two bounding curves and a set of grid control points

A set of grid points on the surface

Four bounding curves defining the surface

Two bounding curves and a set of grid control points

Trepanning is performed for

Producing a large hole without drilling

In oblique cutting system, the maximum chip thickness

Depends upon the material of the tool

Depends upon the geometry of the tool

Which of the following statement is correct in regard to centreless grinding?

The workpiece is supported throughout its entire length as grinding takes place

It is a continuous process and adopted for production work

It requires no holding device for the work

Side rake angle of a single point cutting tool is the angle

Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool

By which the face of the tool is inclined towards back

By which the face of the tool is inclined sideways

Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool

Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

Side relief angle of a single point tool is the angle

Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

By which the face of the tool is inclined towards back

By which the face of the tool is inclined sideways

Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool

Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

Chemical milling operation is performed

In a tank containing an etching solution

800 + Mcqs in Manufacturing And Production Technology in Mechanical Engineering Page 1 McqOptions

1.	In a milling operation, two side milling cutters are mounted with a desired distance between them so that both sides of a workpiece can be milled simultaneously. This set up is called
A.	ang milling
B.	traddle milling
C.	tring milling
D.	ide milling
Answer» C. tring milling

Discussion

2.	If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
A.	RC
B.	hort ARC
C.	RC length
D.	RC blow
Answer» C. RC length

Discussion

3.	When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
A.	ingle riveted
B.	ouble riveted
C.	oth (A) and (B)
D.	one of these
Answer» C. oth (A) and (B)

Discussion

4.	The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)
A.	nT = C
B.	Tn = C
C.	n/T = C
D.	/Tn = C
Answer» C. n/T = C

Discussion

5.	Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?
A.	urning
B.	rinding
C.	oring
D.	illing
Answer» E.

Discussion

6.	In American Standard Association (ASA) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
A.	°
B.	°
C.	°
D.	0°
Answer» C. °

Discussion

7.	A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is
A.	arburizing flame
B.	xidizing flame
C.	xy-acetylene flame
D.	eutral flame
Answer» E.

Discussion

8.	In a particular type of welding, flux is prepared in the form of a coarse powder and granulated flux is spread over the joint. What is this type of welding process called?
A.	lectric arc welding
B.	ubmerged arc welding
C.	IG welding
D.	IG welding
Answer» C. IG welding

Discussion

9.	Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
A.	ow carbon steel
B.	itanium
C.	opper
D.	in
Answer» E.

Discussion

10.	In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done in all the positions i.e. flat position, vertical position or inclined position.
A.	lobular transfer
B.	pray transfer
C.	MAW practice
D.	ip transfer
Answer» D. ip transfer

Discussion

11.	A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is
A.	.2 mm
B.	0 mm
C.	0 mm
D.	00 mm
Answer» D. 00 mm

Discussion

12.	When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as
A.	lectrochemical machining
B.	lectro-discharge machining
C.	ltrasonic machining
D.	one of these
Answer» C. ltrasonic machining

Discussion

13.	During the execution of a CNC part program blockNO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion will be
A.	ircular Interpolation − clockwise
B.	ircular Interpolation − counter clockwise
C.	inear Interpolation
D.	apid feed
Answer» B. ircular Interpolation − counter clockwise

Discussion

14.	Which among the NC operations given below are continuous path operations?Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)
A.	W, LC and M
B.	W, D, LC and M
C.	, LC, P and SW
D.	, LC, and SW
Answer» B. W, D, LC and M

Discussion

15.	When the end of a tap is tapered for about three or four threads, it is known as a
A.	Taper tap
B.	Bottoming tap
C.	Second tap
D.	None of these
Answer» D. None of these

Discussion

16.	A coarse grained grinding wheel is used to grind
A.	Hard and brittle materials
B.	Soft and ductile materials
C.	Hard and ductile materials
D.	Soft and brittle materials
Answer» C. Hard and ductile materials

Discussion

17.	A fine grained grinding wheel is used to grind
A.	Hard and brittle materials
B.	Soft and ductile materials
C.	Hard and ductile materials
D.	Soft and brittle materials
Answer» B. Soft and ductile materials

Discussion

18.	A left hand tool on a lathe cuts most efficiently when it travels
A.	From left to right end of the lathe bed
B.	From right to left end of the lathe bed
C.	With the help of a compound slide
D.	Across the bed
Answer» B. From right to left end of the lathe bed

Discussion

19.	A right hand tool on a lathe cuts most efficiently when it travels
A.	From left to right end of the lathe bed
B.	From right to left end of the lathe bed
C.	With the help of a compound slide
D.	Across the bed
Answer» C. With the help of a compound slide

Discussion

20.	The surface finish is improved by the increase in
A.	Cutting speed
B.	Nose radius
C.	True rake angle
D.	All of these
Answer» E.

Discussion

21.	In up-cut milling the work piece is fed
A.	Against the rotating cutter
B.	In the direction of the cutter
C.	At the right angle to the cutter
D.
Answer» B. In the direction of the cutter

Discussion

22.	In hot machining, the work is heated by
A.	Simple heating
B.	Flame heating
C.	Induction heating
D.	Any one of these
Answer» E.

Discussion

23.	An open structure of a grinding wheel is used for
A.	Soft materials
B.	Tough materials
C.	Ductile materials
D.	All of these
Answer» E.

Discussion

24.	A dense structure of a grinding wheel is used for
A.	Hard materials
B.	Brittle materials
C.	Finishing cuts
D.	All of these
Answer» E.

Discussion

25.	The tool life in case of a grinding wheel is the time
A.	Between two successive regrinds of the wheel
B.	Taken for the wheel to be balanced
C.	Taken between two successive wheel dressings
D.	Taken for a wear of 1 mm on its diameter
Answer» D. Taken for a wear of 1 mm on its diameter

Discussion

26.	The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform satisfactorily in the intended service is known as?
A.	Weldment
B.	Weld tab
C.	Weldability
D.	Tack weld
Answer» D. Tack weld

Discussion

27.	The parameter which completely defines the chip formation in a metal cutting process is
A.	Shear angle
B.	Chip-tool contact length
C.	Both (A) and (B)
D.	None of these
Answer» D. None of these

Discussion

28.	Larger than 15° side cutting edge angle
A.	Increases tool life
B.	Decreases tool life
C.	Produces chipping and decreases tool life
D.	Results in excessive stress concentration and greater heat generation
Answer» D. Results in excessive stress concentration and greater heat generation

Discussion

29.	With the same tool life, the maximum material per minute is removed by
A.	Increasing the cutting speed
B.	Decreasing the cutting speed
C.	Increasing the depth of cut
D.	Increasing the feed rate
Answer» D. Increasing the feed rate

Discussion

30.	Which of the following statement is correct about hot machining?
A.	It requires less power than machining metals at room temperature.
B.	The rate of tool wear is lower.
C.	It is used for machining high strength and high temperature resistant materials.
D.	All of the above
Answer» E.

Discussion

31.	Which of the following statement is correct about EDM machining?
A.	It can machine hardest materials
B.	It produces high degree of surface finish
C.	The tool and work are never in contact with each other
D.	All of these
Answer» E.

Discussion

32.	Relief angles on high speed steel tools usually vary from
A.	0° to 3°
B.	3° to 10°
C.	10° to 20°
D.	20° to 30°
Answer» E.

Discussion

33.	The aluminium oxide abrasive is chiefly used for grinding
A.	High speed steel
B.	Carbon steel
C.	Wrought iron
D.	All of these
Answer» E.

Discussion

34.	Flank wear occurs mainly on the
A.	Nose part, front relief face and side relief face of the cutting tool
B.	Face of the cutting tool at a short distance from the cutting edge
C.	Cutting edge only
D.	Front face only
Answer» B. Face of the cutting tool at a short distance from the cutting edge

Discussion

35.	Crater wear occurs mainly on the
A.	Nose part, front relief face and side relief face of the cutting tool
B.	Face of the cutting tool at a short distance from the cutting edge only
C.	Cutting edge only
D.	Front face only
Answer» C. Cutting edge only

Discussion

36.	For generating a Coon’s surface we require
A.	A set of grid points on the surface
B.	A set of grid control points
C.	Four bounding curves defining the surface
D.	Two bounding curves and a set of grid control points
Answer» D. Two bounding curves and a set of grid control points

Discussion

37.	Trepanning is performed for
A.	Finishing a drilled hole
B.	Producing a large hole without drilling
C.	Truing a hole for alignment
D.	Enlarging a drilled hole
Answer» C. Truing a hole for alignment

Discussion

38.	In machining metal, cutting force at the cutting edge is measured by a
A.	Wattmeter
B.	Dynamometer
C.	Hydrometer
D.	Pyrometer
Answer» C. Hydrometer

Discussion

39.	NC contouring is an example of
A.	Continuous path positioning
B.	Point-to-point positioning
C.	Absolute positioning
D.	Incremental positioning
Answer» B. Point-to-point positioning

Discussion

40.	Which one among the following welding processes uses non-consumable electrode?
A.	Gas metal arc welding
B.	Submerged arc welding
C.	Gas tungsten arc welding
D.	Flux coated arc welding
Answer» D. Flux coated arc welding

Discussion

41.	In oblique cutting system, the maximum chip thickness
A.	Occurs at the middle
B.	May not occur at the middle
C.	Depends upon the material of the tool
D.	Depends upon the geometry of the tool
Answer» C. Depends upon the material of the tool

Discussion

42.	For turning small taper on long workpiece, the suitable method is
A.	By a form tool
B.	By setting over the tail stock
C.	By a taper turning attachment
D.	By swiveling the compound rest
Answer» C. By a taper turning attachment

Discussion

43.	Which of the following statement is correct in regard to centreless grinding?
A.	The workpiece is supported throughout its entire length as grinding takes place
B.	It is a continuous process and adopted for production work
C.	It requires no holding device for the work
D.	All of the above
Answer» E.

Discussion

44.	Side rake angle of a single point cutting tool is the angle
A.	By which the face of the tool is inclined towards back
B.	By which the face of the tool is inclined sideways
C.	Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
D.	Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Answer» C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool

Discussion

45.	Side relief angle of a single point tool is the angle
A.	By which the face of the tool is inclined towards back
B.	By which the face of the tool is inclined sideways
C.	Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
D.	Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Answer» D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

Discussion

46.	Chemical milling operation is performed
A.	On universal milling machine
B.	On plain milling machine
C.	In a tank containing an etching solution
D.	Any one of these
Answer» D. Any one of these

Discussion

47.	A hole is of dimension φ = 9 ₊0⁺⁰∙⁰¹⁵ mm. The corresponding shaft is of dimension φ = 9 ₊0.001⁺⁰∙⁰¹⁰ mm. The resulting assembly has
A.	Loose running fit
B.	Close running fit
C.	Transition fit
D.	Interference fit
Answer» D. Interference fit

Discussion

48.	In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be
A.	Doubled
B.	Halved
C.	Quadrupled
D.	Unchanged
Answer» B. Halved

Discussion

49.	What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
A.	Thermit welding
B.	Electroslag welding
C.	Resistance welding
D.	Submerged arc Welding
Answer» D. Submerged arc Welding

Discussion

50.	The grinding wheel speed (surface speed in m/min) usually varies from
A.	500 to 1000
B.	1000 to 1500
C.	1500 to 2000
D.	2000 to 2500
Answer» D. 2000 to 2500

Discussion

Explore topic-wise MCQs in Mechanical Engineering.

In a milling operation, two side milling cutters are mounted with a desired distance between them so that both sides of a workpiece can be milled simultaneously. This set up is called

If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as

When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.

The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?

In American Standard Association (ASA) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be

A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is

In a particular type of welding, flux is prepared in the form of a coarse powder and granulated flux is spread over the joint. What is this type of welding process called?

Which of the following engineering materials is the most suitable candidate for hot chamber die casting?

In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done in all the positions i.e. flat position, vertical position or inclined position.

A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is

When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as

During the execution of a CNC part program blockNO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion will be

Which among the NC operations given below are continuous path operations?Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)

When the end of a tap is tapered for about three or four threads, it is known as a

A coarse grained grinding wheel is used to grind

A fine grained grinding wheel is used to grind

A left hand tool on a lathe cuts most efficiently when it travels

A right hand tool on a lathe cuts most efficiently when it travels

The surface finish is improved by the increase in

In up-cut milling the work piece is fed

In hot machining, the work is heated by

An open structure of a grinding wheel is used for

A dense structure of a grinding wheel is used for

The tool life in case of a grinding wheel is the time

The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform satisfactorily in the intended service is known as?

The parameter which completely defines the chip formation in a metal cutting process is

Larger than 15° side cutting edge angle

With the same tool life, the maximum material per minute is removed by

Which of the following statement is correct about hot machining?

Which of the following statement is correct about EDM machining?

Relief angles on high speed steel tools usually vary from

The aluminium oxide abrasive is chiefly used for grinding

Flank wear occurs mainly on the

Crater wear occurs mainly on the

For generating a Coon’s surface we require

Trepanning is performed for

In machining metal, cutting force at the cutting edge is measured by a

NC contouring is an example of

Which one among the following welding processes uses non-consumable electrode?

In oblique cutting system, the maximum chip thickness

For turning small taper on long workpiece, the suitable method is

Which of the following statement is correct in regard to centreless grinding?

Side rake angle of a single point cutting tool is the angle

Side relief angle of a single point tool is the angle

Chemical milling operation is performed

A hole is of dimension φ = 9 ₊0⁺⁰∙⁰¹⁵ mm. The corresponding shaft is of dimension φ = 9 ₊0.001⁺⁰∙⁰¹⁰ mm. The resulting assembly has

In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be

What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?

The grinding wheel speed (surface speed in m/min) usually varies from