4791 + Mcqs in Mechanical Engineering McqOptions

1.	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

2.	Hydrogen is the __________ substance.
A.	lightest
B.	heaviest
Answer» B. heaviest

Discussion

3.	Producer gas is obtained by
A.	partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
B.	carbonisation of bituminous coal
C.	passing steam over incandescent coke
D.	passing air and a large amount of steam over waste coal at about 650 C
Answer» B. carbonisation of bituminous coal

Discussion

4.	A taper tap has
A.	its end tapered for about three or four threads
B.	its end tapered for about eight or ten threads
C.	full threads for the whole of its length
D.	none of the above
Answer» C. full threads for the whole of its length

Discussion

5.	In hot machining, solid carbide tools are preferred over high speed steel tools.
A.	True
B.	False
Answer» B. False

Discussion

6.	In machining soft materials, a tool with negative relief angle is used.
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

7.	Which of the following parameters influence the axial feed rate in centreless grinding?
A.	Regulating wheel diameter
B.	Speed of the regulating wheel
C.	Angle between the axes of grinding and regulating wheels
D.	all of the above
Answer» E.

Discussion

8.	A dense structure of a grinding wheel is denoted by the number 9 to 15 or higher.
A.	Yes
B.	No
Answer» C.

Discussion

9.	For softer materials, the point angle of the drill is kept
A.	equal to 118
B.	less than 118
C.	more than 118
D.	any one of these
Answer» C. more than 118

Discussion

10.	The type of reamer used for reaming operation in a blind hole, is
A.	straight fluted reamer
B.	left hand spiral fluted reamer
C.	right hand spiral fluted reamer
D.	any one of these
Answer» D. any one of these

Discussion

11.	In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as
A.	side relief angle
B.	end relief angle
C.	back rake angle
D.	side rake angle
Answer» C. back rake angle

Discussion

12.	A set of eight form relieved milling cutters for each module is provided to enable cutting of gears of different
A.	materials
B.	types of gears
C.	number of teeth
D.	width of gears
Answer» D. width of gears

Discussion

13.	The grinding operaion is a
A.	shaping operation
B.	forming operation
C.	surface finishing operation
D.	dressing operation
Answer» D. dressing operation

Discussion

14.	The lathe spindles are usually made hollow and provided with
A.	internal taper
B.	external taper
C.	internal and external taper
D.	no taper
Answer» B. external taper

Discussion

15.	Otto cycle is also known as
A.	constant pressure cycle
B.	constant volume cycle
C.	constant temperature cycle
D.	constant temperature and pressure cycle
Answer» C. constant temperature cycle

Discussion

16.	The compression ratio for Diesel engines is
A.	3 to 6
B.	5 to 8
C.	15 to 20
D.	20 to 30
Answer» D. 20 to 30

Discussion

17.	The type of tool used on milling machine and broaching machine is
A.	single point cutting tool
B.	two point cutting tool
C.	three point cutting tool
D.	multi-point cutting tool
Answer» E.

Discussion

18.	If the shear angle is large and the chip-tool contact area is low, then the tool life will be more.
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

19.	The carbide tools operating at very low cutting speeds (below 30 m/min)
A.	reduces tool life
B.	increases tool life
C.	have no effect on tool life
D.	spoils the work piece
Answer» B. increases tool life

Discussion

20.	In oblique cutting of metals, the cutting edge of the tool is
A.	perpendicular to the workpiece
B.	perpendicular to the direction of tool travel
C.	parallel to the direction of tool travel
D.	inclined at an angle less than 90 to the direction of tool travel
Answer» E.

Discussion

21.	The efficiency of a dual combustion cycle __________ upon cut-off ratio.
A.	depends
B.	does not depend
Answer» B. does not depend

Discussion

22.	Which of the following statement is correct for oblique cutting system?
A.	The cutting edge is inclined at an angle less than 90 with the normal to the velocity of the tool.
B.	Frequently, more than one cutting edges are in action.
C.	The chip flows on the tool face at an angle less than 90 with the normal on the cutting edge.
D.	all of the above
Answer» E.

Discussion

23.	Cutting fluid has no effect on the tool life.
A.	True
B.	False
Answer» C.

Discussion

24.	A single point tool has
A.	rake angle
B.	cutting angle
C.	lip angle
D.	all of these
Answer» E.

Discussion

25.	When the tool moves parallel to the lathe axis, the movement is termed as
A.	cross feed
B.	angular feed
C.	longitudinal feed
D.	any one of these
Answer» D. any one of these

Discussion

26.	In drilling operation, the metal is removed by
A.	shearing
B.	extrusion
C.	shearing and extrusion
D.	shearing and compression
Answer» D. shearing and compression

Discussion

27.	In the relation VTn = C, the value of n for ceramic tools is
A.	0.1 to 0.2
B.	0.20 to 0.25
C.	0.25 to 0.40
D.	0.40 to 0.55
Answer» E.

Discussion

28.	Gears can be best produced on mass production by
A.	shaping
B.	casting
C.	forming
D.	hobbing
Answer» E.

Discussion

29.	In a plain milling machine, the table can be moved
A.	longitudinally
B.	crosswise
C.	vertically
D.	all of these
Answer» E.

Discussion

30.	The chisel edge angle of a drill is usually 120 to 135 .
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

31.	The cutting speed of a drill varies from point to point on the cutting edge of the drill.
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

32.	Carbide tipped tools usually have
A.	negative rake angle
B.	positive rake angle
C.	any rake angle
D.	no rake angle
Answer» B. positive rake angle

Discussion

33.	Gear burnishing is a process for
A.	surface finishing
B.	under-cut gears
C.	cycloidal gears
D.	removing residual stresses from teeth roots
Answer» B. under-cut gears

Discussion

34.	The continuous chips are in the form of long coils having the same thickness throughout.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

35.	The saw milling is an operation of
A.	producing grooves around the periphery of a cylindrical or conical workpiece
B.	producing narrow slots or grooves on a workpiece
C.	reproduction of an outline of a template on a workpiece
D.	machining several surfaces of a workpiece simultaneously
Answer» C. reproduction of an outline of a template on a workpiece

Discussion

36.	Gears can be cut on a shaper.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

37.	The grade of grinding wheel depends upon
A.	hardness of the material being ground
B.	speed of wheel and work
C.	condition of grinding machine
D.	all of these
Answer» E.

Discussion

38.	A dynamometer is a device used for the measurement of
A.	chip thickness ratio
B.	forces during metal cutting
C.	wear of the cutting tool
D.	deflection of the cutting tool
Answer» C. wear of the cutting tool

Discussion

39.	For fast removal of materials during grinding, a __________ grinding wheel is used.
A.	coarse grained
B.	fine grained
C.	medium grained
Answer» B. fine grained

Discussion

40.	Which of the following process is used for preparing parts having large curved surfaces and thin sections?
A.	Hot machining
B.	Ultra-sonic machining
C.	ECM process
D.	Chemical milling
Answer» E.

Discussion

41.	In continuous chip cutting, the maximum heat __________ the velocity of cutting.
A.	depends upon
B.	does not depend upon
Answer» B. does not depend upon

Discussion

42.	In a universal milling machine, the table can be swiveled horizontally and can be fed at an angle to the milling machine spindle.
A.	True
B.	False
Answer» B. False

Discussion

43.	Chip breakers are used to
A.	increase tool life
B.	remove chips from bed
C.	break the chips into short segments
D.	to minimise heat generation
Answer» D. to minimise heat generation

Discussion

44.	The chuck used for setting up of heavy and irregular shaped work should be
A.	four jaw independent chuck
B.	three jaw universal chuck
C.	magnetic chuck
D.	drill chuck
Answer» B. three jaw universal chuck

Discussion

45.	The size of a shaper is given by
A.	stroke length
B.	motor power
C.	mass of machine
D.	rate size
Answer» B. motor power

Discussion

46.	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

47.	The depth of cut in drilling is __________ the drill diameter.
A.	equal to
B.	one-fourth
C.	one-half
D.	double
Answer» D. double

Discussion

48.	The type of tool used on lathe, shaper and planer is
A.	single point cutting tool
B.	two point cutting tool
C.	three point cutting tool
D.	multi-point cutting tool
Answer» B. two point cutting tool

Discussion

49.	A __________ grinding wheel is used to grind soft materials.
A.	coarse grained
B.	medium grained
C.	finegrained
Answer» B. medium grained

Discussion

50.	While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
A.	independent of index change gear ratio
B.	dependent on speed change gear ratio
C.	inter-related to index change gear ratio
D.	independent of speed and index change gear ratio
Answer» D. independent of speed and index change gear ratio

Discussion

Explore topic-wise MCQs in Testing Subject.

Side relief angle of a single point tool is the angle

Hydrogen is the __________ substance.

Producer gas is obtained by

A taper tap has

In hot machining, solid carbide tools are preferred over high speed steel tools.

In machining soft materials, a tool with negative relief angle is used.

Which of the following parameters influence the axial feed rate in centreless grinding?

A dense structure of a grinding wheel is denoted by the number 9 to 15 or higher.

For softer materials, the point angle of the drill is kept

The type of reamer used for reaming operation in a blind hole, is

In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as

A set of eight form relieved milling cutters for each module is provided to enable cutting of gears of different

The grinding operaion is a

The lathe spindles are usually made hollow and provided with

Otto cycle is also known as

The compression ratio for Diesel engines is

The type of tool used on milling machine and broaching machine is

If the shear angle is large and the chip-tool contact area is low, then the tool life will be more.

The carbide tools operating at very low cutting speeds (below 30 m/min)

In oblique cutting of metals, the cutting edge of the tool is

The efficiency of a dual combustion cycle __________ upon cut-off ratio.

Which of the following statement is correct for oblique cutting system?

Cutting fluid has no effect on the tool life.

A single point tool has

When the tool moves parallel to the lathe axis, the movement is termed as

In drilling operation, the metal is removed by

In the relation VTn = C, the value of n for ceramic tools is

Gears can be best produced on mass production by

In a plain milling machine, the table can be moved

The chisel edge angle of a drill is usually 120 to 135 .

The cutting speed of a drill varies from point to point on the cutting edge of the drill.

Carbide tipped tools usually have

Gear burnishing is a process for

The continuous chips are in the form of long coils having the same thickness throughout.

The saw milling is an operation of

Gears can be cut on a shaper.

The grade of grinding wheel depends upon

A dynamometer is a device used for the measurement of

For fast removal of materials during grinding, a __________ grinding wheel is used.

Which of the following process is used for preparing parts having large curved surfaces and thin sections?

In continuous chip cutting, the maximum heat __________ the velocity of cutting.

In a universal milling machine, the table can be swiveled horizontally and can be fed at an angle to the milling machine spindle.

Chip breakers are used to

The chuck used for setting up of heavy and irregular shaped work should be

The size of a shaper is given by

In hot machining, the work is heated by

The depth of cut in drilling is __________ the drill diameter.

The type of tool used on lathe, shaper and planer is

A __________ grinding wheel is used to grind soft materials.

While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is