ALL INDIA TRADE TEST PAPER AUG 2016 SEM 3 PART 2

1) Internal thread forming operation is known as ............ 

Dieing

Tapping

Threading

None of these

Correct answer

Tapping

2) Taper shank drills are held by ................... 

Chuck

Machine vice

Sleeve

None of these

Correct answer

Machine vice

3) The slow speed of the spindle is necessary for....................... 

Thread cutting

Turning a work of larger diameter

Turning a hard or tough material

All of these

Correct answer

All of these

4) The angle between the face and flank of the single point cutting tool is known as .......... 

Rake angle

Clearance angle

Lip angle

Point angle

Correct answer

Lip angle

5) Twist drills are made of ............. 

a) High-speed steel

b) Carbon steel

c) Stainless steel

d) Either (a) or (b)

Correct answer

d) Either (a) or (b)

6) The size of a lathe is specified by the ........ 

Length between centers

Swing diameter over the bed

Swing diameter over the carriage

All of these

Correct answer

All of these

7) For machining a cast iron workpiece by a high-speed steel tool, the average cutting speed is .......... 

15 m/min

30 m/min

22 m/min

10 m/min

Correct answer

30 m/min

8) In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is ........... 

Tool rake angle

Feed

Depth of cut

Cutting speed

Correct answer

Cutting speed

9) A lathe with four steps on the cone pulley and with back-gears will have ......... 

a) Four direct speeds

b) Four indirect speeds

c) Both (a) and (b)

d) light indirect speed

Correct answer

c) Both (a) and (b)

10) In a center lathe, the cutting tool is feed in with reference to the lathe axis. 

a) Cross direction only

b) Longitudinal direction only

c) Both (a) and (b)

d) Any direction

Correct answer

c) Both (a) and (b)

11) The hole to be drilled for tapping is the outside diameter of the thread on the tap. 

Equal to

Smaller than

Greater than

None of these

Correct answer

Smaller than

12) The point angle of the drill, for drilling stainless steel, is ............ 

150°

135°

90°

118°

Correct answer

135°

13) The larger the diameter of the rod to be turned, the speed will be .............. 

Faster

Slower

Same

Vary

Correct answer

Slower

14) Crater wear occurs mainly on the- 

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

The face of the cutting tool at a short distance from the cutting edge only

Cutting edge only

Front face only

Correct answer

The face of the cutting tool at a short distance from the cutting edge only

15) A twist drill is a ............. 

Front cutting tool

End cutting tool

Side cutting tool

None of these

Correct answer

End cutting tool

16) A single point thread cutting tool should ideally have .................. 

Zero rake angle

Point angle

Positive rake angle

Negative rake angle

Correct answer

Zero rake angle

17) The maximum production of small and slender parts is done by ..................... 

Sliding headstock automatic lathe

Capstan Lathe

Multispindle automatic lathe

Watch maker’s lathe

Correct answer

Multispindle automatic lathe

18) The tool made of cemented carbide wears out faster at ............ 

Medium speeds

Fast speeds

Slow speeds

Very fast speeds

Correct answer

Slow speeds

19) Gear lapping is an operation ........ 

Prior to heat treatment

After heat treatment

For gear reconditioning

None of these

Correct answer

After heat treatment

20) When the cutting edge of the tool is dull, then during machining ................... 

Discontinuous chips are formed

Continuous chips are formed

Continuous chips with built up edges are formed

No chips are formed

Correct answer

Continuous chips with built up edges are formed

21) The lip angle of a single point tool is usually — 

40° to 60°

20° to 40°

60° to 80°

None of these

Correct answer

60° to 80°

22) Drilling is an example of .................... 

Simple cutting

Oblique cutting

Orthogonal cutting

Uniform cutting

Correct answer

Oblique cutting

23) The silicon carbide abrasive is chiefly used for grinding ................... 

Cemented carbide

Ceramic

Cast iron

All of these

Correct answer

All of these

24) For softer materials, the point angle of the drill is kept ...................... 

Less than 118°

Equal to 118°

More than 118°

Anyone of these

Correct answer

Less than 118°

25) The lathe spindles are usually made hollow and provided with ................... 

Internal taper

No taper

Internal and external taper

External taper

Correct answer

Internal taper