2017 JULY MACHINIST THEORY SEMESTER - II

2017 JULY  MACHINIST THEORY  SEMESTER - II

1. Drive mechanism of a planar

includes ......

a. Cam and follower drive

b. Rope drive

c. Direct reversible drive

d. None of these

Answer:- c. Direct reversible drive

2. For holding Small jobs which one

of the following work holding

devices is preferred for a
planner .......

a. Vices

b. V blocks

c. Stops

d. Braces

Answer:- a. Vices

3. Which one of the following

machine is preferred for pre

marked contours?
a. Shaper

b. Lathe

c. Drilling machine

d. Planner

Answer:- a. Shaper

4. Size of the lathe is specified

by the ..............

a. Length between the centres

b. Swing diameter over the bed

c. Swing diameter over carriage

d. All of these

Answer:- d. All of these

5. Which one of  the following

is used to lock the alleged

carriage to the lead screw for

thread cutting ?

a. Chuck

b. Faceplate

c. Spindle

d. Half nut

Answer:- d. Half nut

6, Slow speed of the spindle

is necessary during

a. Facing operation of small jobs . 

b. Turning operation of small jobs

c. Thread cutting

d. All of these

Answer:- c. Thread cutting

7. Three jaw chuck is also known as
a. Independence chuck
b. Compound chuck
c. Universal chuck

d. None of these

Answer:- d. None of these

8. Centre will move along with
a. Headstock
b. Tail stock
c. Carriage

d. Cross slide

Answer:- a. Headstock

9. For turning internal tapers,

the suitable method .........
a. By a form tool
b. By setting over the tailstock
c. By a taper turning attachment

d. by swiveling a compound rcsi

Answer:- c. By a taper turning attachment

10. The guide ways are of ........
a. Flat type
b. 15 mm
c. Dovetail type

d. 12 mm

Answer: - b. 15 mm

11. If the major diameter D is

40mm and minor diameter

d is 20 mm, then the depth of

the thread t is ........

a. 10 mm

b. 15 mm

c. 5 mm

d. 12 mm

Answer:- a. 10 mm

12. The lead screw of a

lathe has ........
a. Sinai e start
c. Triple start

b. Double start
d. Any of these

Answer:- a. Sinai e start

13. The accuracy of vernier

Height Gauge in metric

system is.........
a. 0.0002 mm

b. 0.02 mm

c. 0.1 mm

d. 1 mm

Answer:- b. 0.02 mm

14. Position of spindle in

vertical milling is .......
a. Vertical
b. Horizontal

c. Inclined

d. All of these

Answer:- a. Vertical

15. If In up milling Or

conventional milling......

a. Cutler is rotated at an angle

to the direction of work feed

b. Cutter is rotated perpendicular

to the direction of work feed

c. Cutter is rotated opposite to

 the direction of work feed

d. None of  the above

Answer:- c. Cutter is rotated opposite to

 the direction of work feed

16. The type of milling in which

manner surface arc produced

simultaneously is known
a. Form milling

b. Side milling

c. Face milling

d. Gang milling

Answer:- d. Gang milling

17. In center less grinding process.

Work piece Centre will be ......

a. Below the centres of two wheels

b. Above the centres of two w heels

c. Line joining the two wheels

d. None of these

Answer:- b. Above the centres of two w heels

18. The top and sides of the table of

shaper usually have ...

a. L types slots

b. T type slots

c. U type slots

d. 1 type slots

Answer:- b. T type slots

19. The method of center less

grinding used to produce

taper is .......

a. Infeed grinding

b. Through feed grinding

c. End feed grinding

d. All of these

Answer:- d. All of these

20. The size of abrasi ve grain

required in grinding wheel

depends upon the ........

a. Amount of the internal removed

b. Hardness of the material

    been Ground

c. Finished desired

d. Diameter of the work piece

Answer:- b. Hardness of the material

    been Ground

21. Normally open structure wheels

are recommended for ........

a. Rough grinding and for software

    materials

b. Hard and brittle materials

c. Precision grinding and hard

    materials

d. All of the above

Answer:- d. All of the above

22. Which one of the following

are the indexing methods ........

a. Compound indexing

b. Direct indexing

c. Differential indexing

d. All of these

Answer:- d. All of these

23. The process in which the cut

particles of the work piece stick

to the open space of the grinding
wheel is known as ......

a. Wheel trimming

b. Wheel sizing

c. Wheel loading

d. All of these

Answer:- a. Wheel trimming

24. Which one of the following

is not a precautions for during

grinding operation?

a. Never operate grinding wheels

at speeds in excess of the

 recommended speed

b. Never adjust the or workpiecc

or Work mounting devices when

the machine is operating
C. Do not exceed recommended

depth of cut for the grinding

wheel or machine

d. None of the above

Answer:- d. None of the above

25. Which one of planing

machine have only one

column

a. Pit planing machine

b. Plate planing machine

c. Hydraulic planing machine

d. Open side planing machine

Answer:- . d)Open side planing machine

26. Which one of the following

is not that drive used on planing

machine?
a. V belt drive

b. Hydraulic drive

c. Reversible motor drive

d. Open and cross belt

Answer:- a. V belt drive

27, In a planing machine the

feed is given at the..........

a. End of the forward stroke

b. End of the backward stroke

c. During the forward stroke

d. During the backward stroke

Answer:- a. End of the forward stroke

28. Name the type of cutting

tool used on planing machine?

a. Multi point cutting tool

b. Single point cutting tool

c. Broaching tool

d. Mounted abrasive tools

Answer:- b. Single point cutting tool

29. Which one of the following

is a general purpose lathe?

a. Speed Lathe

b. Engine lathe

c. Bench Lathe

d. Toolroom lathe

Answer:- b. Engine lathe

30. The capacity of lathe is

expressed as...............

a. horsepower and chuck

    diameter

b. Sewing and distance

    between centre

c. Bed length and spindle speed

d. Tool post size and travel

Answer:- b. Sewing and distance

    between centre

31. Which one of the following

is not the function of a lathe

head stock?

a. Accommodate work holding

   devices

b. Accommodate shafts, gears

    and levers
c. Accommodate lubricating

   system

d. Accommodate coolant

    mechanism

Answer:- d. Accommodate coolant

    mechanism

32. centre used for taper turning

by offset method is..........

a. Half centre

b. Ball centre

c. Revolving centre

d. Swivel V centre

Answer:- b. Ball centre

33. a lathe feeding mechanism,

the tumbler gear consist of........

a. Two gears

b. Three gears

c. Four gears

d. Compound gears

Answer:- a. Two gears

34. What type of right angle is

provided, what running hard

materials with carbide

tipped tools?
a. Positive rake angle

b. Negative rake angle

c. Zero rake angle

d. Side rake angle

Answer:- b. Negative rake angle

35. The distance through which

A Screw thread advances

axially in one turn is called
a. Pitch of thread

b. Lead of thread

c. Depth of thread

d. Diameter of thread

Answer:- b. Lead of thread

36. Which one of the following

standard taper is self holding type?

a. Morse taper

b. Brown and shaper taper

c. Jarono  taper

d. Metric steep taper

Answer:- a. Morse taper

37. What is the principle

of  milling?

a. The job rotates

b. The cutter rotates

c. Cutter moves against rotating

cutter       

d. Work moves against rotating

cutter

Answer:- d. Work moves against rotating

cutter

38. Name the milling machine

in which spindle axis is normally

perpendicular to the table
a. Horizontal milling machine

b. Vertical milling machine

c. Universal milling machine .

d. Special purpose milling machine

Answer:- b. Vertical milling machine

39. Which one of the following

is an advantage up cutting

milling?

a. Backlash Eliminator is not

required

b. Downward pressure during

milling is high

c. Cutter wear is less

d. Suitable for milling thin plates

Answer:- a. Backlash Eliminator is not

required

40. Which one ol the following

set of divisions cannot be mailed

on the work piece by direct
indexing?

a. 24,12

b. 8,6

c. 7,5

d. 3,2

Answer:- c. 7,5

41, A gear wheel has 36 and 3

mm module. Calculate the pitch

diameter
a. 12 mm

b. 75 mm

c. 80 mm

d. 108 mm

Answer:- d. 108 mm

42. Maximum angle that can be

indexed in a direct indexing is

10 degree. What is the maximum
number of division that

can be indexed?

a. 12

b. 24

c. 36

d. 48

Answer:- c. 36

43. The abrasive used for grinding

carbides is..
a. Corundum

b. Silicon carbide
c. Tungsten carbide

d. Aluminium oxide

Answer:- b. Silicon carbide

44. Blotters are provided between

wheel surface and flanges.

Why they are used?

a. To reduce vibration

b. To protect the wheel from

     the atmosphere

c. To ensure uniform contact

    with the flange

d. To avoid the direct contact

between flange and grinding

wheel

Answer:- c. To ensure uniform contact

    with the flange

45. Remove the clogs and blunt

abrasive grains from the grinding

wheel is termed as
a. Turning

b. Glazing

c. Loading

d. Dressing

Answer:- d. Dressing

46. The planing machine bed is

also called as...
a. Base
b. Column
c. Cross rail

d. Housing

Answer:- a. Base

47. Planing machine beds are

made out by
a. Forging
b. Casting
c. Fastening

d. Fabricating

Answer:- b. Casting

48. The main function of a cross

 rail in a planing machine

 is to carry
a. Dog

b. Saddle

c. Housing

d. Workpiece

Answer:- b. Saddle

49. Which one of the following

lathe is used for woodworking

spinning and polishing work?
a. Speed lathe

b. Engine lathe

c. Bench lathe

d. Tool Room lathe

Answer:- a. Speed lathe

50. Which type of lathe can

accommodate various

attachments?

a. Speed lathe

b. Engine lathe

c. Bench lathe

d. Tool Room lathe

Answer:- b. Engine lathe